My buddy's blown 509 peaked at 800 hp on 8 psi boost, intercooler and required 102 octane. My reasoning at the time was reduce the boost (larger driven pulley) to the point that 91 octane would be adequate, but it was a 50,000 dollar teague marine engine... the price of fuel was kind of incidental on a 120,000 dollar boat. Also, the drive unit was prone to breakage on the input shaft, or whatever the vertical shaft is called... but there can be lots of reasons to not pursue hp at all costs. given more parts, more complexity, more risks, I like not boosting so high that we need intercoolers or ethanol injection, or octane boosters. Keep it relatively simple, and maybe you don't win every race, but there's always tomorrow, if ur not broken. BTW, I friggin love ur channel, ur explanations, and ur approach to tech stuff.
Awesome job! I’m hopefully closing in on a 383 build at a local machine shop. I would love to try a turbo so I keep watching for updates. All the best!
Nice increase. A lot of people dont seem to realize how much power and torque is left of the table by going too small on the hot side. Turbo engine's gotta breathe! Obviously the cam swap made the gains, up top, even greater.
I love the content been watching for some time now. I have many different makes mostly GM but in second place is ford. I know you are a gm guy but I would like too see you pick apart a iron sbf head like a early 351w head, gt40 or gt40p
Very cool 🤙 I have a handful of turbo builds. Have 2 twin turbo 406's a twin turbo tpi 305. And 3 468 turbo builds single/twins. And a twin charged 396. One of the 406's is twin compound
I’m surprised that the cam change made that much difference it looked like a valve spring issue to me, bid you change springs with the cam swap?? In any event nice little engine :) thanks for sharing Pat!!
Got a gt45 turboed 350 880 block, stock crank, h beam rods, forged flat top pistons, with Amazon heads, speed master roller cam, blow through holley 750. Hoping for 650-700 hp In my 94 c1500 single cab short bed.
What are you doing for a rear axle in your Firebird? Also, kinda glad that you're still tweaking the OG small block, we all know the LS is out there but we choose not to...
Beleive it or not I ran the 9 bolt into the 11s prior and I will continue to use it until it breaks lol. Ive rebuilt it with 3.70 gears and re did the posi to add strength
Another cool video! And just a question about the flex/expansion in the turbo cross over. I'm looking at doing a similar deal and wanted to know how long it's been there and if any issues? Thank you 👍
@@cuttersperformance thank you for replying. Hopefully it does the job because I made the choice to go with the same style after looking at these and the bellow style. Nissan has these from the factory on a couple of their V6 single turbo engines with crossover however they are cast manifolds and a lot shorter. Keep up the good work your videos are always informative and interesting. We as the audience appreciate it
LoL 😂 I literally read some guy on FB claiming that the dyno runs you make are fake and are only a simulation. I asked him if he had any evidence of that and he immediately went ad hominem and started attacking me, asking if I even know what a real Dyno graph looks like. 😂 That's how you know they're lying.
@cuttersperformance Right 👍 It just cracks me up how people will say stuff like that with zero evidence. He said it's basically because of your graphs. Correct me if I'm wrong but don't you use those colors because they're easier for you to see?
@Carl_Jr yes exactly I find it easier to compare engines on video when you can see it on a graph. It's hard to see and compare numbers on a dyno sheet but I do show them in some of the videos along with the graphs. It's all legit, but no matter what you do, some guys like to argue 😅
@@cuttersperformance I would be interested in your build. I have a 409 sbc with a torqstorm. 10.5-1 compression. I'm running the timing locked out at 28 degrees on E85 and a blow thru carb. I used a carb as I'm not using an intercooler either to keep the intake temps down. I do have a Holly Sniper on my other car and like it.
What kind of iats did you have on the dyno? I’m really curious what your iats will be driving around. I’m non intercooled but with a procharger and mine get hot in the summer heat driving around
@ well that’s very good to hear! Yes I also use water meth. At the track I’m not worried because of the water meth and I use e85 fuel but I still always wonder how other engines do iat wise down track and driving.
The turbo didn't fail but it didn't work as well on the larger engine. It had instant boost response but the top end it wasn't happy. It made 700 on a 355 but we also didn't rev that engine out
@jerrymiller8736 becuase i wanted it to run on pump gas. Is it limiting power....yes but pump gas is cheap and it's making more power than I need as it is
Just don't believe the hype about LS, SBC still has 5 head bolts around the cyl rather than the LS 4 bolts. Boost stays in better w/more head bolts. Just built a 350 like yours with a SCAT balanced rotating assembly w/Fluid balancer, billet main caps, SCAT rods, forged pistons 9.6 to 1, Aluminum 195 heads, ARP everything, Dual plain intake w/4-barrel TBI unit for fuel. It runs an Embedded locker ECU piggyback for tuning, 2 BAR MAP, IAT sensor off TPI Camaro, done threw USB to serial port on stock ECU. Timing is done w/MSD boost timing retard box w/knob inside for on-the-fly timing adjustment, GT-45 Turbo w/ air to air intercooler, A/C, Power windows, reg cab 8" box, on air bags w/Parallel 4-link all in GMC 94' C-2500 5-speed!
Yeah, lets go! Gen 1 SB is still awesomene and always will be.
I'm with you, Pat . I still like the old Gen 1 small block. Everything doesn't need to be LS swapped .
🙌
Warms my heart seeing a Gen 1 sbc ripping like they should. Nice work!
Would love to see you make a few passes in the Trans Am with this engine Pat!
My buddy's blown 509 peaked at 800 hp on 8 psi boost, intercooler and required 102 octane. My reasoning at the time was reduce the boost (larger driven pulley) to the point that 91 octane would be adequate, but it was a 50,000 dollar teague marine engine... the price of fuel was kind of incidental on a 120,000 dollar boat. Also, the drive unit was prone to breakage on the input shaft, or whatever the vertical shaft is called... but there can be lots of reasons to not pursue hp at all costs. given more parts, more complexity, more risks, I like not boosting so high that we need intercoolers or ethanol injection, or octane boosters. Keep it relatively simple, and maybe you don't win every race, but there's always tomorrow, if ur not broken. BTW, I friggin love ur channel, ur explanations, and ur approach to tech stuff.
Awesome job! I’m hopefully closing in on a 383 build at a local machine shop. I would love to try a turbo so I keep watching for updates. All the best!
Wow that is so impressive 784 hp I never thought that was possible with a 383 single turbo very nice combo you came up with.
I'm reaching the limits of push gas but with E85 or race fuel it would have certainly made even more
Sounds great can't wait to see it go down the track. Just got my 350 block back 30 over going for 383 stroker. Yaaa!!! SBC Forever
You nailed it, Pat. Well done!
Nice increase.
A lot of people dont seem to realize how much power and torque is left of the table by going too small on the hot side. Turbo engine's gotta breathe!
Obviously the cam swap made the gains, up top, even greater.
Yeah I could certainly benefit from a larger down pipe but it doesn't package well in the car
@cuttersperformance
With the power its making, it'll still be a total riot to drive.
Especially now you can wind it out!
Uno 😂 I set my ring gap so I can run a turbo later
Gen 1 4 life. I'm going to be running the Summit 8807 in a 400 this spring. Fingers crossed
I love the content been watching for some time now. I have many different makes mostly GM but in second place is ford. I know you are a gm guy but I would like too see you pick apart a iron sbf head like a early 351w head, gt40 or gt40p
I'm still running camel hump heads & a Qjet on my 67 Chevelle! 🤣
way better power curve,,,,nice
dyno curve on the first setup in a truck would pull your house down, curve on the second one looks like a good drag racing curve to me
Very cool 🤙 I have a handful of turbo builds. Have 2 twin turbo 406's a twin turbo tpi 305. And 3 468 turbo builds single/twins. And a twin charged 396. One of the 406's is twin compound
Very cool!
👂🏽👍🏼😎 SHOUT OUT TO THE GEN1 TRIED AND PROVEN. 355 ROCKS.🏁🏁🏁
I’m surprised that the cam change made that much difference it looked like a valve spring issue to me, bid you change springs with the cam swap?? In any event nice little engine :) thanks for sharing Pat!!
@@paulmac9634 same springs both cams
Dang, it’s cool you found a new direction since your role in that show Reba. Good work!
What lol
I am shooting for just over 700 hp as well picked up a 502 block mild 540 with a 125 shot hopefully low 10s and be able to do power tour .
Yeah exactly. My car ran 11ls before, I'm just looking for a repeatable, reliable mid 10s on pump gas
Got a gt45 turboed 350 880 block, stock crank, h beam rods, forged flat top pistons, with Amazon heads, speed master roller cam, blow through holley 750. Hoping for 650-700 hp
In my 94 c1500 single cab short bed.
What are you doing for a rear axle in your Firebird? Also, kinda glad that you're still tweaking the OG small block, we all know the LS is out there but we choose not to...
Beleive it or not I ran the 9 bolt into the 11s prior and I will continue to use it until it breaks lol. Ive rebuilt it with 3.70 gears and re did the posi to add strength
Hot D@mn very nice can't wait to see it run at the track.....
You have built exactly what I am planning for my ‘57 Chevy. Can you provide the specs for the entire build? Thanks!
Yeah I can do a video
Another cool video! And just a question about the flex/expansion in the turbo cross over. I'm looking at doing a similar deal and wanted to know how long it's been there and if any issues? Thank you 👍
It currently has about 60 dyno pulls on it but I do worry about no having enough expansion in that cross over flex
@@cuttersperformance thank you for replying. Hopefully it does the job because I made the choice to go with the same style after looking at these and the bellow style. Nissan has these from the factory on a couple of their V6 single turbo engines with crossover however they are cast manifolds and a lot shorter. Keep up the good work your videos are always informative and interesting. We as the audience appreciate it
im building a l31 sbc right now with a ls computer, but still have stock bottom end so no turbo now. putting in a thirdgen firebird
❤🎉😊 usa all the way
LoL 😂
I literally read some guy on FB claiming that the dyno runs you make are fake and are only a simulation.
I asked him if he had any evidence of that and he immediately went ad hominem and started attacking me, asking if I even know what a real Dyno graph looks like. 😂
That's how you know they're lying.
Definitely not simulations 😅 lol I dyno test each one. And not just 1 or 2 dyno pulls most are between 20 and 40 dyno pulls haha
@cuttersperformance
Right 👍
It just cracks me up how people will say stuff like that with zero evidence. He said it's basically because of your graphs. Correct me if I'm wrong but don't you use those colors because they're easier for you to see?
@Carl_Jr yes exactly I find it easier to compare engines on video when you can see it on a graph. It's hard to see and compare numbers on a dyno sheet but I do show them in some of the videos along with the graphs. It's all legit, but no matter what you do, some guys like to argue 😅
I know only one thing about running turbos: run the biggest intercooler you can cram under the hood.
What is your ignition timing and Compression. Thanks
I can do a more detailed video on the build
@@cuttersperformance I would be interested in your build. I have a 409 sbc with a torqstorm. 10.5-1 compression. I'm running the timing locked out at 28 degrees on E85 and a blow thru carb. I used a carb as I'm not using an intercooler either to keep the intake temps down. I do have a Holly Sniper on my other car and like it.
Hell yeah very nice
Very cool
Some future Firebird content finally?
Yes, I'm trying to work on my own projects finally lol
What kind of iats did you have on the dyno? I’m really curious what your iats will be driving around. I’m non intercooled but with a procharger and mine get hot in the summer heat driving around
Do you run water meth injection? I will make a video but the IATs were lower than I expected
@ well that’s very good to hear! Yes I also use water meth. At the track I’m not worried because of the water meth and I use e85 fuel but I still always wonder how other engines do iat wise down track and driving.
Awesome!
sounds like valve float?
That was my first thought but it wasn't
Nice!
Can you put up a material list for that build
I will do another video to answers questions I'm getting ask and give a break down of the build
@cuttersperformance appreciate that man
Will you talk about timing
Ignition? Or cam?
Ignition please
Why do you think the turbo failed? It was the same one that made like 750 at 14 lbs on the dingle ball right?
The turbo didn't fail but it didn't work as well on the larger engine. It had instant boost response but the top end it wasn't happy. It made 700 on a 355 but we also didn't rev that engine out
dont need a LS to make power
Ok no E85 but why not just go methanol? Or drag and drive pump gas methanol dual fuel?
@jerrymiller8736 becuase i wanted it to run on pump gas. Is it limiting power....yes but pump gas is cheap and it's making more power than I need as it is
6,500 R.P.M., from a stroker? Why bother?
Just don't believe the hype about LS, SBC still has 5 head bolts around the cyl rather than the LS 4 bolts. Boost stays in better w/more head bolts. Just built a 350 like yours with a SCAT balanced rotating assembly w/Fluid balancer, billet main caps, SCAT rods, forged pistons 9.6 to 1, Aluminum 195 heads, ARP everything, Dual plain intake w/4-barrel TBI unit for fuel. It runs an Embedded locker ECU piggyback for tuning, 2 BAR MAP, IAT sensor off TPI Camaro, done threw USB to serial port on stock ECU. Timing is done w/MSD boost timing retard box w/knob inside for on-the-fly timing adjustment, GT-45 Turbo w/ air to air intercooler, A/C, Power windows, reg cab 8" box, on air bags w/Parallel 4-link all in GMC 94' C-2500 5-speed!
Very similar builds
Holy Ballz! I hate turbos!!
Haha why? Easy power