The Only 3300 lb. Buick V6 in the 8s using...

[Alky V6]

1.835" intake and 1.5" exhaust valves. How is this possible?
Looking for answers.

 

[Alky V6]

Boost climbing to 28 psi by the top of first gear. Dipping to 27 psi boost for the shift into 2nd. Then slowly ramping to 31 psi boost by the end of the 1/4 mile run.
Doesn't seem like overly wild boost numbers to me. A very conservative boost rise curve. I don't think it's the boost.

 

[Alky V6]

Nitrous used to spool the turbo, but turned off before the car leaves the line. I don't think it's the nitrous.

 

[Alky V6]

Gears are 3.73:1. Could probably stand to go with a taller gear. That will happen in the future.
Tires are 29.5x10.5-15Ws. Could go with shorter tires. That has been suggested.
I don't think it's the gearset or the tires.

 

[Alky V6]

TH475 transmission. Manual VB with transbrake. Stock gear ratios. Nothing special there.
Driveshaft is a large diameter steel driveshaft. Nothing done in the way to save weight there.
Don't think it's the transmission or the driveshaft.

 

[Alky V6]

Torque converter? I can guarantee the torque converter is slipping too much on the top end.
Don't think it's the torque converter.

 

[Alky V6]

3300 lb. car with upgraded stock suspension.
Lots of work done on the suspension, but it's still just a stock configuration suspension that was set up by myself. I'm no expert chassis guy.
I don't think it's the chassis or suspension.

 

[Alky V6]

Stroke of the engine is 3.06". A destroked Buick V6. Bore is under 4.00". CID is 224. Redline is 7800 rpm. Shift point is 7400 rpm.
No big cubes, and destroked to boot. Don't think it's the bore and stroke.

 

[Alky V6]

On the flow bench, the heads flowed 210 cfm. The intake valve size is 1.835". The exhaust valve size is 1.50".
Don't think it's the heads at all.

 

[Alky V6]

The camshaft has too much duration and too much overlap.
Can't possibly be the camshaft specifications.

 

[turbobuick]

Boost climbing to 28 psi by the top of first gear. Dipping to 27 psi boost for the shift into 2nd. Then slowly ramping to 31 psi boost by the end of the 1/4 mile run.
Doesn't seem like overly wild boost numbers to me. A very conservative boost rise curve. I don't think it's the boost.

Very easy equation to me Donnie. Very Small container+large volume of air=high pressure. TURN UP THE BOOST!!!!!!!!!

 

[Alky V6]

The exhaust pipes are rediculously large in diameter and long in length. Way too much volume.
Can't possibly be the exhaust pipes.

 

[turbobuick]

On the flow bench, the heads flowed 210 cfm. The intake valve size is 1.835". The exhaust valve size is 1.50".
Don't think it's the heads at all.

The heads have come a long way in the last few years I would consider an upgrade soon. Off the shelf ported alum heads are easily in the 260+ range these days.

 

[Alky V6]

The intake runners are the same length as a stock GN intake manifold. Way too much plenum volume. Rediculously, overly large throttle body.
No way it's the intake or throttle body.

 

[Alky V6]

Using a dry liquid intercooler while running alcohol fuel. Totally unneccessary.
Can't be the dead weight intercooler.

 

[Alky V6]

The turbo is rediculously large. Way more turbo than the configuration needs. 91mm? Crazy.
Can't be the turbo.

 

[Alky V6]

Dang. Running out of things. Hmmm.
Can't possibly be all the sim work I did to come up with this whacky engine configuration. Sims? Bah hum bug! No way.

 

[Alky V6]

All the experts on TB.com say every aspect of my combination is wrong.
Yet, the timeslip says something is right. What is it?

 

[Alky V6]

What is it?

 

[JT'sV6]

Are you holding your mouth open or keeping it shut