Stock 350 Olds vs cammed 403 oldsmobile in my 1969 oldsmobile cutlass olds cutlass
ฝัง
- เผยแพร่เมื่อ 12 ก.ค. 2020
- Stock oldsmobile 350 vs 403 oldsmobile with cam,
edelbrock performer rpm intake amzn.to/368RJ60
625 edelbrock carburetor,
hooker super comp headers amzn.to/33iERZo
2200 TORQUE CONVERTER amzn.to/3lbBuJU
.030 bore, and 3.07 posi
Crane Cams amzn.to/37ddAZt
Due to factors beyond the control of Dirt cheap media, I cannot guarantee against improper use or unauthorized modifications of this information. Dirt cheap media assumes no liability for property damage or injury incurred as a result of any information contained in this video. Use this information at your own risk. ⚠️ Dirt cheap media recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Dirt cheap media, no information contained in this video shall create an expressed or implied warranty or guarantee an particular result. Any injury, death, or loss that may result from improper use of these tools, equipment, or or from the information contained in this video is the sole responsibility of the user and not Dirt cheap media. - ยานยนต์และพาหนะ
Getting one this weekend 😂😂 and I like the stock heads as is
Thx
The 350 was damn close in torque and hp to the 403 in stock form. I had several 350s that ran awesome we used to be on the hunt all the time for deisel g bodys or even Chevy pickups with the olds deisel motors that were blown and swap in the mighty 350 rockets out of vista cruisers or anything actually as long as we used the right quadrajet from a 350 olds and made sure the H.E.I s mechanical advance was In perfect working order add a curve kit so it came in fast low compression motors love it a good coil wires plugs and all a 350 rocket in a g body w a 350 turbo and shift kit was a blast to run around in comfortable ride nice interior cutlass supreme or something and it would eat up Camaros and mustangs that thought they had something lmao and stock too just dual exhaust a krylon paint job and fun fast for cheap.lol
Yeah it’s pretty fun cruiser my only complaint is I think the head gasket is blown on the 403. Only thing I need at this point is headgaskets then I can install the 350 heads on the 403
Good show!
Thanks bud
Some useful video for a change
Love the old F100 you have there.. 53/ 54?? owned several back in the day.. lol. wish I had one now....
Yes it is the funny thing about that Ford is that it has a 260 cubic inch Oldsmobile
If the 403 hasn't even had a compression boost, that's all the more impressive. The factory compression on a 403 was around 8:00 to 1:00 or just a bit lower. If you can get smaller CC chambered heads or notched Pistons instead of deep dish, nine to one or better compression ratio can make some very big power and torque.
Factory 403 heads are on it but not sure on pistons. I believe it is still 8.0:1 I have a set of 350 heads that are worked over set aside for it but I’m waiting on funds before they can be installed. Overall it’s a pretty nice setup but still has room to improve
@@dirtcheapmedia3390 heck yeah it is. If you ever have to pull it open, get that compression ratio up, those 403s can be monsters, never having to rev over 5,000.
That’s what the 350 heads will do. Should be close to 10:1 when it’s all said and done. In a newer vid. I installed a tach and did some test runs. The 403 did a 15.03 at 93mph while only doing a 2.65 60’ no prep 26F*
But I probably spun it to high and shifted at 5500 it seemed like it was plateauing off above 5k. Probably needs more than a 650 carb
@@dirtcheapmedia3390 I'm not saying you can't have a shift point higher than 5000. The motor is going to peak out horsepower where its going to peak, typically in a 403 or any Olds V8, without modification, this can be achieved in well under 6000 rpm. Also Oldsmobile motors, by factory design, are not made to have 'sustained' high RPM. That fact is not a criticism of using the motor, to the contrary, the torque curve starts early and is quite broad. The design makes a quite good daily driver experience even with some modifications. The webbed mains on a 403 are not an issue unless you plan on really pushing it hard, like sustained higher RPM, or some sort of boost, like Turbo, super charge or Nitrous. That's when it can be expensive, as the mains need girdles for reinforcement. The beauty of the 403 is it doesn't need all that to make good power.
WHAT CAM DO YOU GET FIR THE 403 I HAVE ONE IN MY 1978 OLDSMOBILE CUTTLAS SUPREME
Link to the cam is in the description it is a crane cam
You can't go wrong with an Olds wide block . I do always prefer the 403 but a true 350 rocket is a beautiful thing too 😎
The 403 does seem to be noticeably stronger than the 350 but I still have more work to put into the 403
@@dirtcheapmedia3390 will a 403 fit a 1984 Buick Regal?
Yes anything will fit assuming you’re willing to put in work. That being said 403 swapping a g body is supposedly a pretty simple swap. Externally it’s the same engine as a 260, 307, 330, 350, and the 403 for testing and mounting purposes
@@dirtcheapmedia3390 I've heard the mid 80s 307 is a beast to build off of for small block applications . A lot of people say the stock roller cam is extremely versatile and practically bullet proof so it's just about modding low end of engine .
Won’t disagree due to lack of experience but I’d much rather swap in 40-100 cubic in. Plus basic mods. Probably same price but better results.
Quite doing toe taps on the gas it's hard in the bearings etc... What heads you got on it? ... The cam sounds good what do you have for camshaft... I have done the heads up on my 330 getting 75 horsepower out of them... The center e ports where their bolt onto the headers that little indent weld it so there is no indent there. . That is up to 15 horsepower right there... And if it is just a drag car then block off under the intake exhaust ports to keep the carb cold and remove the exhaust balance port in the intake.
The toe taps were to keep the engine from dying as it is colder than it appeared. if I remember correctly it was 45-55 in those videos. Both the 350 heads were stock as well as the 403 heads. however I have a set of 350 heads ported, larger valves, and exhaust divider and roller rockers. I will install them money permitting. Thanks for the watch 👍
@@dirtcheapmedia3390 sounds good if you pick up some heavy duty aluminum foil and stuff in the intake exhaust crossover system and block it off it helps as well I did that with my F heads on my '70 W-30 I got it to run into 12:60's @ 103 mph not bad for for mostly factory put stick grind camshaft 328 duration from the 308 that is a good small block grind Holly 650 dubble pumper spread bore carburetor19054017278 and creager hot-pipes headers and 28" slicks ..
My 'C' heads I blocked off the center exhaust ports going under the manifold totally... I melted aluminum and pored into that area using clay to help shape the port the way I wanted and blocked both sides of the Siamese center exhaust ports from going under the intake manifold then regrind the bowl shaped to match the rest .. and with a little messaging on all the ports and balance and squared up the block and aline hone got close to 525 horse power .. I remember reading an article from Joe Mondelo years ago I think I still have it in the shop that you can get 100 horse power from a good set of olds heads.. but you will need to pot in push rod sleeves and this walls are thin that is drag racing only ... I'm pretty sure I got about 75 on mine... Same with my 330 small block number 4 heads with the big 455 valves and prepared the same way the nice thing about the 67 motors is the forged crankshaft my 330 small block was a 320 horse to start with and my 425 I picked up was a 365 horse ... I found a set of "C" heads and did them up I did not want to damage my W-30 455 or transmission along with rear end I found others back in the '70's-'80's parts cars I took the 2-speed transmission from my small block and put the Tork converter on the big block and put it up to a 66 Buick 400 turbo short shaft a guy gave me years ago both switch pitch converters rewired the switch inside the car to the shifter and got a high stall if 3300 & low of 2600 APX. So taking off it was in high then once I got moving I swapped it into low in the Tork range . All kids if little tricks back then to make horsepower in those olds motor's...
Hi, if you don't mind me asking, exactly which cam are you running in the 403, sounds great? Too, with that cam, can you run a/c?
The cam grind number is in the video I believe, I don't remember it off my hand and I am unsure about the ac. I don't know why you couldn't
@@dirtcheapmedia3390 - Cam link doesn't work...
@@buzzwaldron6195 cam grind number is in this video
th-cam.com/video/pcZFSiTYciA/w-d-xo.htmlsi=nPtDFVIEukK2PROn
@@dirtcheapmedia3390 - That link doesn't work, either...
It doesn’t bring you to a TH-cam video?
Did you ever install those heads? I’m ordering a stock 403 long block from Advanced Auto. Is there anything I can do to wake it up?
No not yet the cam/headers/intake was a big improvement. The heads will help for sure but the engine has next to no oil pressure once it reaches operating temp(like 6-7psj at idol) so I’m going to pull it and get new bearings for the engine
I hate to hear that about the oil pressure. Why is it low? I’ve got an RPM intake and shorty headers. I’m not so sure about a cam with stock heads. I’m not trying to build a racer but something that could get my 83 Cutlass moving
The cam is a smog era cam and pretty restrictive I would recommend one similar or a touch smaller than mine. We didn’t replace bearings on install just checked the crank for wear/damage but apparently the clearances was to big
@@BigGeorge3397 The 403 in factory form only had a 7.9:1 compression ratio. Due to this putting in a bigger cam may not only have diminishing returns, if you go to big without a compression boost it actually could reduce torque without much horsepower gain. Boost compression, increase flow and you're in business.
The 403 still has it's stock big chamber heads and dished pistons at this point? That's impressive.
I’m not 100% sure on the pistons taking someone else’s word that it was bored out. They might have put flat top in at that time but not sure. Also the 350 heads I sent to machine shop and got ported and decked and exhaust divider welded in. I will be installing those heads onto the 403 eventually
Yeah if you want eight and half to one pistons
Yeah a four o three at eight to one Piston ratios yippee 😁 WOW that's that's your impression of awesome hello happy for you pal
For you beginners out there grab a Chilton motor manual and read the book on older cars compression ratio s for you wimpy people who are content with three hundred horse power numbers and seriously study up on things before you post it on Facebook
I have a 78 hardtop bonneville coupe with the 403. what is your hp and torque with that setup?
No idea 🤷♂️ haven’t dyno’d it probably 315-325 just guessing though.
Sorry I figure it makes close to 330 torque as well
I have a 1971 olds Cutlass 350. Turbo 350 trans w/shift kit and a 342 post 10 bolt. Motor is stock with 2 barrel. Any advise?? Always open to input from those who have had success. Thanks to all
You street drive or only wanting to race it
@@dirtcheapmedia3390
Street,,,, but want usable performance and good sound.
2.5-3in true duals with your choice of dual chamber mufflers. 4bbl and an performer or performer rpm would be some great starting point. And still keep drivability.
I have a 78 skylark with a 403 bored 0.60 over(414ci) Big cam. Ported and bored number 6 heads. Eldebrock intake 700 Holley carb. Long tube headers
Reply back I can send videos
Sorry it took so long to respond, I’m still new to TH-cam studio and missed your comment. I would love to see your skylark
My 350 sounded like this 455 til I went efi.
Now it sounds like the 350.
My 455 , I assure you I will still have plenty of eagle cackles
The 2 engines in this video are a 350 and 403. Can you reword this statement?
Was that Mary Poppins
Put the q jet back over both Holley and. Edelbrock a lot better all around carb
Quadrajet was only a 600 and responded to the edelbrock more
Q jets of the older variety anyhow only came in 750 and 800 cfm if it responded better to the Edelbrock the q jet was beat up and needs some attention everyone says that well of course you took a brand new Edelbrock out of the box and replaced a 30 yr old carb w it of course it's going to feel more responsive but in 30 yrs will that Edelbrock still be able to even run an engine ? Doubt it
Glenn Manchester the edelbrock was an old one that was freshly cleaned out with a rebuild kit. After I install the new heads I’ll experiment with carbs more
@@glennmanchester1568 you are correct only qjets for olds for sure
So the stock 350 just has dual exhaust
Yes true duals 3in
The timing and carbs are of bad oncthese cars the vacum advance dont sound like it working either..
Vacuum advance disconnected and very conservative timing.
They run best w the original q jet they came with over any aftermarket like a edelbrock they suck any squarebore sucks
I’ve heard that from someone else but the one that came on the car was a 650 edelbrock
The four o three motors have a weaker bottom end
Gotta love windowed mains
webbed mains on the 403 are only an issue when trying to exceed 600hp, 6000+ rpm or any type of boost. The block is still a high strength steel that is good for plenty of power without modification if the above criteria are followed. There are plenty of other blocks, cranks, etc. to build a super-high performance motor. The 403 will cost quite a bit more to get 600+ hp and 7500 rpms, but for most people the huge torque output of the motor with mild upgrades, mostly compression boost, make a big difference and a respectable reliable motor for good times.
Yep 👍