Is this realistic?

[InovermyheaD1]

building a motor for my car, it’s just a street car, will never see the track just the parking lot at the Mexican restaurant. I have a 153 on center block and intake and heads. I have been told that the heads will not work for my build due to port size and the rpm’s required to make them flow, multiple people have told me this so I am not disputing that. So a friend told me he feels that if I use a larger turbo and smaller primary tube headers that I could potentially slow the flow down to a point where I could use the stage 2 heads. Not trying to sound ignorant but I could have missed something he said. In theory does that work?

 

[750H.P.V6]

I used to run Stage 2 heads on my car, I can say first hand running a larger turbo surely wont help drivability. My car was very dopey AKA: no fun to drive with an PTE 80 mm turbo on it. In regard to primary tube diameter it will likely not make any difference. You'll need at least a 1 3/4" primary due to the exhaust port size on the head. The headers will likely be custom fabricated and very costly.

Having it to do over again I'd suggest running a production based head like a TA or later Champion head with a reasonable size cam and turbo to have a more enjoyable combo. If you have E 85 in your area build the engine with more static compression for better spool up and throttle response.

Neal

 

[Mr.Spool]

I will release some data soon that will one way or another properly answer what is and what's not possible with stage 2 heads.
No disrespect to anybody in the past
But tuning
Converters
Wastegates
And turbochargers technology has completely changed
I have a car here that's on the latest greatest and I will share soon.

 

[Mr.Spool]

The goal is to have it not suck on the street and not just be an 8 sec spool t brake combo that goes good on the track.
I'm actually hoping for footbrake success but it does have a tbrake to get after it if necessary
I have a few tricks up my sleeve and will share some data after significant testing is done on the street.

 

[InovermyheaD1]

I appreciate the comments and I would be interested in seeing how the newer technology affects the the older proven models.

 

[boostingbuick]

I fought this battle once. My question was always if the LS, Ford, BBC, Mopar guys are running big heads on the street, with and without a turbo or 2, then what makes the V6 so wrong to do so? I am running stage heads on the street and went with a 76/75 DBB turbo. Slight lag just standing on it from a light, but foot brake it and it will spin as long as I stay in it. The car drives great, and I'm sure that production heads would be the same on the street, but when I run the boost at 30lbs I believe that I have the ability to make more power with the Stage heads shows. I put 862 down, and will never go back to production heads. And I agree with Mr. Spool, the newer turbos and converters have come a long way and has closed up the gaps with turbo lag.

 

[750H.P.V6]

The root of the original question wasn't if you can run Stage 2 heads on the street. The question is whether a bigger turbo with a smaller primary tube diameter will yield a combo with better driveability. The high level answer is NO.

There is no doubt that technology continues to get better and what was once not possible is much more possible now.

Back to driving Stage 2 heads on the street, 20+ years ago we were running my friends car on the stock ECM with 96 lb injectors, a Turbonetics 76 mm turbo and old ATR headers with a converted 4 BBL intake. It ran and drove fine but it did have a very conservative camshaft.

Like most things, it's all in the combo.

Neal

 

[jmendlik]

I used to run Stage 2 heads on my car, I can say first hand running a larger turbo surely wont help drivability. My car was very dopey AKA: no fun to drive with an PTE 80 mm turbo on it. In regard to primary tube diameter it will likely not make any difference. You'll need at least a 1 3/4" primary due to the exhaust port size on the head. The headers will likely be custom fabricated and very costly.

Having it to do over again I'd suggest running a production based head like a TA or later Champion head with a reasonable size cam and turbo to have a more enjoyable combo. If you have E 85 in your area build the engine with more static compression for better spool up and throttle response.View attachment 400087

Neal

can I ask where you soruced that intake ducting?

 

[GTP_ARGO]

Aircraft Spruce might be a source

 

[750H.P.V6]

I think I got it from Mc Master Carr but its very similar if not the same at ducting used in aircraft applications. I was going to recommend Aircraft Spruce also.

Neal

 

[1986 Buick GX1]

can I ask where you soruced that intake ducting?

There’s some good info in this thread.

Pete Tomka Cold Air Intake/Hose

Im looking for a Pete Tomka Cold Air Intake with 3.5 hose and a stock mass air sensor set up. Also looking for replacement hose 3.5 or 4 inch for his set up or were he bought the hose from. Thanks, Mike

turbobuick.com

 

[J-B Racing]

I run my S2 in the street, but with all that power and you will not see the track. As it was mentioned. Put on a set of TA Heads, Hyd. Roller Cam.
Solid Roller is loud! Great for Racing and pulling wheelies, but PITA in the street.
My opinion.