[Marty Palbykin]

With the new parts we have why not a PSI screw blower on a Pontiac ?
Less power to turn it and more boost.
A good starting point would be 12.5 compression ratio and 40 pounds of Boost.

I see no reason a 500 ci. Pontiac with a screw blower would not produce some excellent power.

Make sure you have a good tunner.....

Marty P.

P.S I still have sealings rings. ( you are going to need them)

[Steve Barcak]

Originally Posted by Marty Palbykin

With the new parts we have why not a PSI screw blower on a Pontiac ?
Less power to turn it and more boost.
A good starting point would be 12.5 compression ratio and 40 pounds of Boost.

I see no reason a 500 ci. Pontiac with a screw blower would not produce some excellent power.

Make sure you have a good tunner.....

Marty P.

P.S I still have sealings rings. ( you are going to need them)

IF your class allows it. Mine does not. NHRA also does not allow them in any class using Nitromethane. You would have to use alky or gas and adjust comp ratio accordingly.

Steve
Thur-Sun April 8-11, 2010 12th annual Pontiac Heaven Phoenix www.pontiacheaven.org
Sunday April 11, 2010 8th annual Nostalgic Show & Go! Phoenix www.nostalgicshowandgo.org

[Scott M]

Originally Posted by Marty Palbykin

I see no reason a 500 ci. Pontiac with a screw blower would not produce some excellent power.

Just the cost, I suppose.

[Travis Q]

I didn't know you could slow a D or C rotor PSI down enough to make only 40 pounds of boost ! LOL

The C rotor make a bunch of steam....Last boost pressure data I saw was a 524 inch Hemi, it had 55 psi at the hit of the throttle and a tad over 60 psi in the lights......

I know that one of the things the Pontiac is lacking is a good flowing cylinder head that will deal with this kind of boost pressure. The latest and greatest BAE stuff (the 8) will flow around 600 cfm......also, the better running screw blown teams are running a bunch of rpm in the lights in order to lock the clutch up (or make the converter couple up better), 10,400 rpm is not unheard of. I'm not sure I want to try that with a Pontiac.

Just yet.

TQ

[Scott M]

Originally Posted by Travis Q

also, the better running screw blown teams are running a bunch of rpm in the lights in order to lock the clutch up (or make the converter couple up better), 10,400 rpm is not unheard of.

2.75" mains.