3.8 pulley with 20% overdrive?

[Pincushin3819]

Anybody running this set up or similar? If so what is your boost at? Thanks!

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[doodguy]

What blower?

 

[Pincushin3819]

What blower?

It will be a Paxton 2200sl. I have the stock 3.8 pulley on the head unit with the 20% overdrive right now. I know simple math is supposed to add 20% more boost but I've seen conflicting logs that have shown more & especially how these cars rev up.

I made this thread trying to see if I was safe boost wise on 93 but after seeing some guys making north of 15lbs I decided to wastegate it with the 12lb spring & add a 3.6 pulley to get into boost quicker. I hope with 3.6 & OD I will get the same benefits as the 3.33 pulley wastgated without the belt slip.

 

[Azmike]

I have a 20% overdrive and a 3.6 pulley and have seen 17psi at max rpm but average 15-16 psi. I have data logs i have done and sent to Lund and no issues!

 

[Pincushin3819]

I have a 20% overdrive and a 3.6 pulley and have seen 17psi at max rpm but average 15-16 psi. I have data logs i have done and sent to Lund and no issues!

On 15+ psi you are dedicated to e85 only, right? My tuner doesn't want to be over 12.5-13 psi on 93 but said that I could get a separate tune for e85 & could go to 15+ psi on e85 but wouldn't need to go that high for my goal of 750whp.
What kind of power are you making with E85 & 17lbs?

 

[Azmike]

I am on E55 technically because our law makers did away with E85 in Arizona. Yes i am dedicated to E55 full time. As for Dyno i haven't been back since we are fixing a belt slip issue. But at 14 lbs i ran a 9.98 in the 1/4 and at full factory weight.

 

[Azmike]

Who is your tuner?

 

[Pincushin3819]

Who is your tuner?

Ken B.

 

[dubster99]

You'll need a return fuel system to go that high on E85.

 

[Pincushin3819]

You'll need a return fuel system to go that high on E85.

I have a twin pump return with 1000cc injectors.

 

[dubster99]

You should be good to go then.

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