I Unlocked Massive Power in My Firebird
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- My 1990 Firebird came with a fake "Power Bulge" hood from the factory, let's fix that!
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Winston - Just a personal suggestion, generally Fram is not the best air filter out there, and if you plan to own something for a lifetime, a drop-in K&N filter and oiling kit is the way to go. I live next to a corn field, so it gets dusty as hell twice a year, and it's nice to just be able to wash out and reinstall the filter for free whenever it's dirty. Sure, it's a heavy up front cost, but worth it in my opinion.
THANK YOU!Thank you so much for posting this. I used to own a ‘83 Firebird and a ‘85 Trans Am with carburetor 5.0 V8s which did not have this option (i.e. that added more HP) and I’ve been wondering for over 35 years exactly HOW those damn scoops worked! Thank you again....put a big smile on my face today!! 😉😁😄
I'd probably mechanically fix it open. Don't know if the old solenoid can handle a long duty cycle on.
tastiger91 That is a REALLY good point.
Would have watched it sooner but TH-cam? I'd make a controller for that thing from an Arduino. Add another skillset. I promise it is super easy and cheap. I'd make a control knob that changes the rpm it opens at by 100 rpm increments. Off the line, low rpms, a longer intake will make more tq. Up top you just want the engine to have access to as much air as possible. This is why pickup trucks have big long wrap around intakes and cars that use the same engine have short, low intakes. Mustang vs. F150 which they called the triton same engine except for the intake. Also the secret sauce in the MR2 with the T-VIS, similar principal.
Most if not all the programming code could be figured out in an hour or two, having never done it before. I'd try to do a little research on that servo, see if they burnout with a lot of use. If that became a problem I'd convert it to a vacuum actuator with off the shelf stuff.
So a kid from south Africa via China immigrates to America and shows a deep love and appreciation for American muscle cars. That's what I call effing awesome.
I'm older but if we were neighbors I'd be over there helping you whenever you were working on your cars I graduated high school in 1984 so those era cars are exactly what I worked on back then and even to this day it's my favorite era of vehicles to tinker with I've been wrenching since I was idk a freshman in high school I guess and it's one of my back up trades when I am presented with the opportunity to make a few bucks my main trade is in construction although so it's like I said just something I enjoy and often make a few dollars along the way so a weekend here and there working on something like the 78 or the 90 would certainly not hurt my feelings one bit.. lol keep up the videos I'm enjoying them once in a while I cringe at the way you do things and it's a miracle you didn't get hurt with that front coil spring be careful
This is the first time I've seen someone turn them into real vents NICE
Hey Winston, did you know that Corvettes, C4, C5, and C6 in particular, benefit tremendously from putting vents in the hood (most effective in certain spots).
Not for the intake, or cooling the drivetrain (this is a side effect though), but because they suffer from a terrible buildup of pressure in the engine bay at speed. Nearly all vehicles have this issue to an extent, but in Corvettes it is compounded by the manner in which they draw in air to the intake, and are engineered to draw air upwards under the front air dam into the radiator (be sure to check that area, it tends to build up debris). The area underneath the hood is tight, and has little to no space for the overpressure to egress.
This causes lift at speed (I can tell you from experience that >170 is wild without certain aero mods; best way to describe this is airplane turbulence. As in darting back and forth 2 or 3 feet at a time virtually instantaneously, as if the tires aren’t even touching the ground. Very temperamental situation).
If this pressure buildup is mitigated, the effects are surprisingly noticeable, even at interstate speeds. The mid-high speed handling improves as well.
A few years ago I was able to hit 212 mph in my highly modded C5.
Btw, have been watching you for years. Since the “China, how it is” days. Happy to see you out of that sinking ship, and here in America. Sorry that you ended up in California (just kidding, guess that’s a personal choice)
Well Zora Antov DID want to put Hood Vents, Functional Ones on the C2 but GM told him no, so I wouldnt be surprised if this also applied to ALL of the corvettes really.
What hood did you go with on your c5?
That was the FIRST mod that I performed on my 1989 Firebird Formula-350 back in the fall of 1988. TPI cars run hot and it helped out a lot in reducing under hood temperature. Thanks for the video !!! 👍
Any issue with water coming in?
I still have the car which has been garaged since new. I only install the tin plate before washing the car which is only driven when it’s nice out. I guess there would be a water issue if the car was driven during inclement weather.
This doesn't have effect on the temperature outside of the intake. It's a closed system and drawing air from outside of the hood...
@@MarkoNurmenniemi it would probably have some effect, since a bunch of the air doesn't have to travel through a long tube under the hood where the heat is trapped, but i'm not going to speculate on whether it makes a significant difference.
@@MarkoNurmenniemi TPI ingine don't have this kind of intake. Only TBI. So its open.
"This Hood Mod gives 20% more POWER!" Scoty Kilmer has entered the chat
🤣🤣🤣🤣
Hey, don't knock Scotty.
Prolly more like 2%...
Probably not 20%, but a worthwhile modification nonetheless. Nicely done!
Or anyone that's ever, I dunno, DRIVEN A CAR?
No no no...
*Up to* 20% more Power.
Those two key words are the magic sauce that keeps the aftermarket out of legal trouble.
On the turbo cars with this hood they put the boost gauge in the scope. It's a series of lights going left to right going green, yellow, red.
They only did that on the second generation turbo Trans Am. The third gen had the wire mesh insert just like shown in this video. The 1989 V6 turbo Trans Am had the usual flat Trans Am hood of the mid 80s onwards.
Very, very well done. I haven't seen anyone do this yet and I'm impressed with the results but not terribly surprised. I had two mid 1970's Trans Am's back in the late 1980's and made the shaker hood scoops functional. They sounded great and from the amount of snow they ingested at around 40 mph, they clearly worked too.
You guys are beyond belief. It is really something to see someone give these cars this kind of love.
waste of time LOL
Stay tuned next week when Winston installs a NOX kit!!! Really interesting how everything matched up but drastic changes by car manufacturers are expensive so they basically keep the same car but introduce subtle changes to entice new or old owners to buy newer versions. So in your case Winston this proved to be a win win situation for you.
8:36 that firebird really singing now!!!😁
Thanks for sharing the mod with us.
It's like something out of The Fast+The Furious! 👌😁
Did the exact same mod on my
87 305 Formula firebird years ago got the parts from from
junkyard for $30 .00. Totally agree with you about air scoops being functional. The
long plastic piece attaches below the screen to divert water away from the distributor, and the hole on the bottom side of the housing
is a drain hole for water.
this is cool as hell!
i wouldn't go as far as saying "20%" but i'd agree that its gotta be a noticeable improvement.. at least as much as any cold air intake would provide to a modern car.
keep the cool vids coming sir.
MAN, I love what you are doing to those Pontiacs !!!! .... my high school clique was all about British sports cars, but the Trans am and the Firebird were close 3rd's. Neither was #1 however... the most excited I ever got over a new car, was in 1978--in my auto shop class-- when one of my classmates drove into the shop in his mom's brand new Ford Mustang 2... it was blue and white, just like Jill drove in Charlie's Angels.... still #1 on my bucket list, and still my biggest shame :-) ha ha ha
Haha... Yeah mustang 2...
Love the Scotty Kilmer style thumbnail images :D
Awesome work, I love seeing a car reaching it's potential. To somewhat answer your question as to why they stopped using this system, GM is notorious for "bean counter engineering" where they find out it costs them $5 less per unit to have whatever option is on there (though it drastically improves performance), they will remove it and have a slightly higher profit margin, it can be infuriating at times. The second reason is probably some obscure emissions/EPA requirement (less air and fuel running through the engine=less emissions) and the only way they could get it to pass from factory was to delete the scoop altogether. You'll notice in the early 3rd generation f-bodies (82-86) that the 5.7 wasn't offered again until I think 1987 because emissions laws were outstripping the technology and they couldn't get a 5.7 to pass the emissions the EPA wanted. The EPA, more than anything else, killed the muscle car.
3rd gen TAs only had these hoods from 82-84. After that they were only on Formulas. It wouldn't work on TPI. My 82 TA had it with Crossfire Fuel Injection.
I had this on my 1983, which was the first year the base motor got air induction, 82 only had it on the crossfire motor. The solenoid was activated by pressing the throttle to the floor and it felt like a downshift in terms of additional power, my car was a five speed. And with the roar of the secondaries, it was a lovely sound. The other thing they had in 82 and 83 was the dual resonator exhaust which made wonderfulsounds and the pipe actually split after the catalytic converter, it was as close to a true dual back in those day’s. From 1997 to 2003, the WS6’s had functional RamAir hoods, which could easily have been made to create a true ram air supercharging effect. Are you bypassing the air filter? The original unit did not bypass the air filter as there was a secondary dome under the top fileter cover
No it's not bypassing, if you look at the beginning you'll see the lid has a dome
Worthless Whips I wonder, if air is vented only when the solenoid is open, it wouldn’t be that harmful to vent directly to the throttle body. That would yeild even more air. A brief direct venting of air directly wouldn’t be that harmful. Again, only when the solenoid opens
@@richarddobreny6664 You are correct about it only being available on the Cross-Fire Injection engine in 1982. I own a 1982 Firebird T/A and it has the bulge hood with the wire grill and block off plate. The bulge hood was available with 15'' wheels and bigger sway bars if the car was ordered with the WS6/WS7 option. Standard Trans Ams had 14'' wheels, smaller sway bars and a flat hood. 1983 and 1984 Trans Am's were offered with the functional bulge hood as a standard equipment. And yes the dual resonators sounds really wonderful. They were still available on the standard engines in 1984 and the more known single muffler was first used on the late 1983 H.O. engines which had larger manifolds, intermittent pipe and tail pipes among other goodies such as an electric fan, a tuned Rochester Carburetor, better camshaft etc. The dual resonators were dropped by late 1984 and the single muffler became standard in 1985 until 2002.
I've been lurking in the TH-cam shadows waiting for this upload today.
Also, I'm still sending that private link to y'all the first time I start this car after almost a year and a half of interior and other stuff.
Those hoods were originally for clearance for a turbo,these cars were designed for turbo but GM axed the pontiac motors at the last minute so they had to use a small block chevy instead.
I had an 87 TPI and mine had the mesh chicken wire open and no hood liner. I always thought it was to vent heat from the engine bay. Cool to know it was functional for the TBI. I’d look into getting a K&N air filter for that bad boy
Love that compression (downshift) stop there at the end, smooth. 9:12... the man can drive. I'm starting to like this car.
My first car was a 1983 Trans Am with that scoop. The issue with the hood scoop solenoid was that it would bind and not open sometimes. I just wired it open like you did. In heavy rain, you'd get some water in the intake but if you look at the underside of the scoop, there's a hole where water can exit without damaging anything so it's of little consequence since the bulk of it drains out.
Thanks for making this video. I found it very informative and food for thought as i am currently in the market for a firebird.
I had a 1984 T/A that had a flap that opened when you hit the gas. Pretty neat to watch.
Love the car, but honestly love the Kawi even more. I have 1975 Kawasaki Z1b waiting to be restored in my shop.
Good job bro! True hot rod trick. My dream car in 87 (the year I got my license) was a silver 87 Formula 350.
Well done Winston that is nice. . I totally agree about utilising the scoop
I really like how this channel is shaping up, this episode was really well produced. Keep up the good work!
Thanks mate! Will do!
You have inspired me to build one for my own Firebird. I’ll make it out of aluminum. Coming to my Chanel soon enough
An alternative to the go-pro under the hood: grease on the lip of the boot, close the hood, check for grease transfer to the underside.
Hey so proud of you to go the extra to get the most out of your Pontiac. I agree with all you said. Good job 👍
That's pretty sweet. Need more footage of you getting on it.
Simple but brilliant! Gotta love it when you have a epiphany !! LOL COOL.
The functional bulge was on all 83-84 Trans Am, standard V8 or HO. In 1982 only the Crossfire models had it, and it had a slightly different opening for the air cleaner. Not all of them due to a shortage in the turbo hood that year.
Have a EXACT TWIN to this car. Mine is an ‘88 Formula Firebird, TBI 5.0 5 speed, T Tops, white in color. I plan to do this mod. I am in it for the sound and cool factor. I like how these TBI sound at wide open throttle. The sound resembles the secondaries opening up on a Quadrajet carburetor. TBI is great.
Nice! Hope you pull it off, it’s way worth it! I love the induction sound!
I love this channel. I've watched your other channels too and found them very interesting but as a car guy I'm really happy you made this one.
The 1999-2002 TransAm Firehawk SLP had functional ram-air scoops. Check it out.
Now, I wonder if the Venturi effect robs you of air at higher speeds on the reverse scoop.
I haven't seen an issue, I rarely take this car over 90mph anyway but it still has plenty of go at top end
The idea was there is a high pressure region at the cowl ahead of the windshield that you can tap air from. Forward scoops need to be raised significantly above the hood to get clean pressurized air funneled into them. At least that was what the car magazines in the 70s said.
@@MyDailyUpload Cowl induction is always cleanest, but nowadays mostly cabin air comes from the cowl inlets.
I cut out the panels on the scoop in my 79 Trans Am.
Not shure if it increased the HP, but it sure made it a lot easier to hear the gas being guzzled.
It was literally a giant sucking sound.
The eagle cry at the 9 min mark lol😂
Amused at a couple of things here. To start you have the LO3 5.0 motor which was the garbage, base V8 from the factory in 1990 for the Formula and Trans am. It was rated at 170hp from the factory. After all of this work to modify it you still wouldn't get as much power as a TPI 5.0. And this mod wouldn't work on the TPI either so the hood bulge kind of has to remain only for show on the upgraded motor from Pontiac :)
To be fair, no Firebird should be without the Turbo Hood anyway, so shouldn't have been a big revelation, but cool to see the practical difference it actually adds as well as just being one of the best looking features on the car.
I guess I missed when you got a 3rd Gen? Anyway, I had this hood once from a 305 Crossfire car and wired it through a toggle to key-on and ground so I cold close it on a rainy day or dirt road to keep my 500HP 383 Stroker motor happy.. IT's in my 1996 VHS shredding tires with a 70 challenger
love functional scoops, that is nice.
Something you might do is install " Frogskinz" iand delete the flapper entirely. t's basically a membrane that allows air in but keeps out water. I've seen it used on competition snowmobiles. Those even in stock form are close to the same horsepower that your car was when new. I will install it on my hood once the fake scoops are cut out. A point. Even without ducting to your air cleaner base, the colder air helps dissipate heat. The old mopar " airgrabbers" and Chevrolet cowl induction hoods gave a bit of extra horsepower but there is no way it's even 10%. In fact 5% would be optimistic ( measured at the wheels) That being said in the end it makes sense to do this. 5% on a 250 hp engine is still 12+ horsepower. At this stage you might want to consider getting a mailing address in Arizona to get around the CARB regulations. When you do that it's easy to upgrade your engine ( and in particular your excessively restrictive exhaust). With a proper cat back exhaust and finding better manifolds you can get more HP without affecting the reliability of it.
Winston is such a multi-talented man. Awesome!
Please update us on when you install a switch for the hood scoop.
Looks great with the mesh and glad to hear it works! It appears that it bypasses the air filter, which given the flow of air is likely not an issue but, is there a secondary filter in the assembly mounted to the hood?
It actually has a dome that seals the air filter, don't worry it's not bypassed
I prefer induction noise to exhaust in the right car...
This is awesome! I have an '89 with the same engine, and will definitely look into this!!!
Dope can’t wait till I find the right project firebird
As always, making awesome things in another awesome video. I still need to do this upgrade on my '82 Trans Am.
On my 90 firebird formula I took off the plate on the scoop and it brought down my engine running temp a good amount. Had the 305 tpi and it liked it
I can't wait to get my firebird up and running.😁
I have a red firebird.. I’d love to do this to mine!
I had a '90 formula WS6 just like this, same color too except mine was a coupe hard top. I really wish I had kept that car around.
Like you, I love American muscle. But, one of things that I will always like are 1980s and 1990s Japanese cars. I am thinking of buying a 1992 Toyota Celica GT with 115k miles on it. It looks like it was restored. It is a one owner. They want $7k for it, and so I might be buying it. I owned an '89 Celica as my first car, and that car was awesome.
I Believe this, I just took out all the Parts out the single snorkel breather and removed the air tube from the breather as well and My Firebird Formula went from 118mph to 135mph and kind of time consuming as well because I didn't want to damage the breather anymore than possible
I knew that hood was special and traded it for a blocked off hood+$75 for our group beater TPI car. We have 4 front offset 16" '84-87 wheels on it and it ran 14 flat which is the same number that my '97 SVT Cobra ran at the same track. My mostly stock LS1 4th gen ran a 13.1 and my '87 Turbo T ran a 12.5 with a stretched stock mount I/C, 50# injectors, a 2800 stall, TH DP, a rebuilt "clipped" turbo, mail order Red Armstrong/ Cal Hartline chip, and snow tires from a Crown Vic cop car on GTA wheels. I really want a Syclone that is "Beater Quality".
The reason it had the actuator is that it bypasses the air filter when open and with normal driving, you want the air pulled on through the filter. You may want to rig a switch to open and close it.
I also unlocked massive power in my ('90 L98) Firebird! Vortech V3 supercharger, higher flow injectors, aux fuel pump, MSD box, Magnaflow cat back, adjustable fuel pressure regulator, .....................
Very cool mod, but isn’t the cold air from the hood vent bypassing the air filter so “un-filtered” air is going directly into the TBI unit?
Im thinking if it actually improved the power that much, there must be some other mods to the engine and exhaust system. The little snorkel does look like a massive restriction or "bottleneck" (almost quite literally). Maybe in the day they were just tuning for general drivability, and wanted you to unlock higher rpm power if you knew how. It seems strange they would stifle the engine though, from a competitive stand point, as all the muscle car companies were vying for better hp figures to put on ads, I would have thought. Maybe it's my modern perspective; growing up with modern EFI cars that are more deliberately engineered to take advantage of and utilise the design available wherever they can, unless specifically going for economy. There are definitely some econoboxes that get a similar % increase from basic de-restriction of intake and exhaust, but only when they are not at all going for power. Any sporty car now tends to have such good design that not much is there to be gained with simple mods. Unless you get really serious and start removing emission controls like cat converters etc.
This is the 1st formula I have seen without a tune port
Trans Am shaker isn't a scoop. It's a vent. They're vents and fully functional.
Would be cool to do an A/B test with it closed and open to compare acceleration times. Imo one reason they restricted these engines so much is that the transmission, the T-5, was kind of weak.
But, you wouldn't be able to replicate the high pressure air which would be forced into the scoop, at the base of the hood/windshield area, on a dyno. This can only be achieved at speed, and you wouldn't likely see much of a h.p. increase until you were somewhere on the south side of 80 mph. This has proven to be the case for both ram air equipped cars and motorcycles, when dyno tested against their non ram air counterparts.
@@500erider I wasn't talking about a dyno. You can do single gear acceleration tests using a GPS and other test equipment that will show small changes in time to speed.
I used some rain gutter mesh. It works really good. And I could tell the difference in how the car runs. I mean heck why not make it function.
Makes you wonder if the manufacture assumed people would just toss on the parts and make it functional but they just never bothered. A FAIL on the manufactures part for not selling a kit separate "track use" and everyone would have bought it.
Agreed
My 64 GTO had two fake hood scoops so i simply removed the plates and let the air go under the hood straight onto the tri-power carbs , don't know if it helped or not but it made me think it did . ;)
Very good video bought back great memories.
Nice Z900 RS. Great taste in bikes too I see!
Thanks mate!
I personally like an ice cream scoop lol
Do you know if there's a way to make the fake air intakes on the GTA hood work? They would be much better than the true air intake buried off to the front right of the vehicle - they're forward-facing so you'd even get a sort-of RAM-air effect.
That air induction unit was from a 1983-1984 LG4 or L69 car. There were no 1982 LG4s with a functional air induction hood.
Where do you get the large rubber seal that goes between the hood and the air cleaner?
The hood scoops on the GTOs were real and functional. But the 64-67 had it in a terrible place.
You got it. The 82-84 cars
That’s a great project!
70-72 T/As had functional shakers and extractors were functional through later years.
I wish I could use it too. Same hood on my 89 but it is TPI instead of TBI.
I was selling Pontiacs back then, and I don't think that's really a Formula.. they had the tuned port injection... Though that might have been in '91..
Good day, on what camera you make your's video?
The fake scoops remind me of fake drawers, complete with handles, which don't open. Same with buttons on cloths that have no corresponding buttonholes. I hate decorative versions of functional things.
Watched the second time just to catch what I missed. Great Car!
This upload was cool! Thanks Winston!
My scoop is functional on my Formula 350 TPI...it gets the heat out of the engine compartment. ;-)
Cars are simply big breathing machines. Just like humans, the more air we can take in while “moving” the better we perform. Having said that, I don’t think he added “massive” power with the reverse scoop. Pontiacs with true “Ram air” scoops, facing forward, usually gain about 5 horsepower when at the correct speed. The other end of the equation is to expel the air quickly. Adding headers would gain him even more horsepower - 15 - 25 by most tests.
Nice, what a success. Im looking forward for new content like always, stay awesome :D
Kick ass mod
Awesome work bro. Risky purchase that paid off big. Any way to actually quantify power increase other than a 20% guestimate?
A dyno trip in the future
If anyone knows where to get the gasket between the air cleaner lid and the induction system please let me know, also the drip tray attached to the induction system. I have this setup too but am missing a few pieces and can't find them online
please explain HOW your 305 TBI which could use at best maybe 425-450cfm at WOT somehow gained ANYTHING since the old snorkel/filter wasn't the bottleneck??? the camshaft/heads are.. i maintain it might have a beefier sound drawing air from the cowl instead of the old snorkel.. possible IAT could make an ever so slight difference.. (id be surprised if it was 1-2hp.. if your old Air cleaner was drawing in hot air from the engine compartment.. which its not supposed to.. and wasn't cuz in 1990 they drew cold from the front via a flex duct.. like the video shows yours did) so.. no additional air could enter.. no additional fuel needed.. = NO GAIN in PERFORMANCE... nice that you made the power bulge functional.. but it was unnecessary.. exactly why they stopped making it functional on the early 80's T/A when they started using it on the Formulas.. so people.. don't bother making this conversion.. it will new you ZERO GAIN.. LS SWAP a junkyard 5.3 in... it's the best bang for the buck on this car.. easily add ~175 wheel HP for $1200 bucks including the engine, tune and exhaust work.. close to 275-300 rwhp add if you swap the cam, lifters, valve springs and add headers and a tune.. these are best drivability bang for the buck ways to make this car better.. can't do much with he 305.. it's an old small block so adding cam/intake/heads/exhaust/carb etc to it makes no sense.. expensive and not much return.. you swap in a 383 or something you still have huge costs.. LS swap in a truck engine.. do the easy bolt on mods.. she will perk right up.. sorry you wasted your money on this hood mod.. while it's novel and cool.. you didn't gain a thing.. cept the woosh sound when you kick the little TBI in the ass..
I miss the suit 🤘😎🤘🇨🇦
My dad did this back in the day 88 Formula!
1984 Formula Trans am , 178 mph, still had peddle 200 mph... I painted it Laguna Blue... 2 years later I gave this car to a co worker of Lisa's, they didn't have a car and were poor... I gave this car away in good condition... very fast car... faster than a 5.0 Mustang i owned, much faster... My Mustang was faster in 1st, 2nd gear, then my Formula would catch it and leave my Mustang in the dust, both tuned up way better than stock tune...
FANTASTIC!
I remember when I put headers on my car it didn't seem any faster but it sounded better.
NICE. Much more…FUNG-SHWAY-IONAL 😅