DirtyDaveW

I was looking for the HP capabilities for the PT76GTS and came across an old thread by Jose back in 2005. He was comparing his PT76GTS to a PT88. He made high 9xx HP with the PT76GTS and just slightly more with the PT88 but they were both at 24 psi. Up pretty high. I've ran 19psi on my current setup a couple of times. Just wondering how comman 24'ish PSI is on LT1 brothers cars.

Z8'S

I have run 24 lbs on my blower setup.Looking to push much higher with my Twins.

DirtyDaveW

Z8..are you Big Rick? I see that a Big Rick went low 8's in 2009.
Big Rick 8 35 @ 168 LT1 Formula. Fastest LT1. - YouTube

Purple Poncho

No, not the same person. Rick is from Texas IIRC and no longer runs the car. Z8, don't know name, is from the Chicago area.

Z8'S

Chris Sikora out of Chicago area looking to finally break the 7 second barrier.

Kevin Blown 95 TA

And then there's these guys although I honestly can't remember much about the engine. Anybody else here happen to know them?

DirtyDaveW

Egads! The size of that turbo!

97WS6SCharged

Size matters.

BIGCATPOWER

i run low 20's with a ysi. just remember boost is volume with know were to go.

engineermike

I've been in the 23-24 psi range with a T76GTS on a 383. It wasn't that reliable, though. I eventually upgraded the intercooler and exhaust to make the same power at 17 psi.

slammed98gmc

24-25 pretty regularly. has been to 28psi on accident. it didnt come apart though

DirtyDaveW

Hey Mike. You ended up selling your machine, no? It was a great inspiration for others like myself.
When you say you upgraded your Intercooler, do you mean in terms of size(ie: going from a 3" to 4" for example) or in terms of water to air vs air to air or a better design, etc?

I have the Ebay FMIC from OBX. 3" in/out right now.

DirtyDaveW

I spiked mine to 24psi recently at moderate RPM due to a mistaken understanding of the 'High Boost' config of my new wastegate. I was only in second gear at 3xxx rpgm and it blew the complete charge pipe going from the turbo to the intercooler off and into the street. Have you encountered issues with couplers blowing off at those elevated PSI's? What kind of couplers and Tbolts (If they are a higher end type) are you using?
Do you recommend a specific brand and/or Vendor for your couplers/Tbolts?
I'm using Ebay stuff so that may be the problem.

Purple Poncho

A little trick I have used with pipes that don't want to stay is to spray some hairspray on the pipe and then tighten the coupler while it is still wet. Don't laugh. Spray some in your hands and see how sticky it is.

engineermike

Thanks! I did sell the car several years and got a boat for my new family.

I had been running a vortech aftercooler, but upgraded to a custom bell unit that was 2.5x bigger.