ZR-1 Net Registry Forums - View Single Post - U.D. pulleys & 160 T-stat G.P.

Greybeard ZR1 · 10-03-2007

I'm sorry, I didn't wish to be hostile, or unkind. And I certainly don't want to hurt anyone's feelings. And I don't really need to PM him to ask for his results, they're posted on his website. It's the posted results that I questioned. The results seem to be out of line with the results achieved by numerous tuners that have worked on the LT5 for the past 15 years or so.
Do you think John Lingenfelter, or Doug Rippie would go to the trouble of porting the plenum, injector housings, and heads of the ZR1, if all they had to do was install underdrive pulleys, a thermostat, gaskets, and exhaust on it to get 475+ hp.?

For a more thorough look at what it takes to increase the output of an LT5, i refer you to this presentation by respected long time LT5 tuner Marc Haibeck:

http://www.zr1specialist.com/HAT%20W...%20Paths1b.pdf

Perhaps if Randy's parts have worked their magic on your car, you can share the results with us? dyno numbers? seat of the pants?

10-03-2007	#25
Greybeard ZR1 Join Date: Jun 2005 Posts: 14	Re: U.D. pulleys & 160 T-stat G.P. I'm sorry, I didn't wish to be hostile, or unkind. And I certainly don't want to hurt anyone's feelings. And I don't really need to PM him to ask for his results, they're posted on his website. It's the posted results that I questioned. The results seem to be out of line with the results achieved by numerous tuners that have worked on the LT5 for the past 15 years or so. Do you think John Lingenfelter, or Doug Rippie would go to the trouble of porting the plenum, injector housings, and heads of the ZR1, if all they had to do was install underdrive pulleys, a thermostat, gaskets, and exhaust on it to get 475+ hp.? For a more thorough look at what it takes to increase the output of an LT5, i refer you to this presentation by respected long time LT5 tuner Marc Haibeck: http://www.zr1specialist.com/HAT%20W...%20Paths1b.pdf Perhaps if Randy's parts have worked their magic on your car, you can share the results with us? dyno numbers? seat of the pants?