I am primarily a thirdgen.org person, but before I sell the car I am trying everything I can to figure this one out.

Basically, I started with a good running camaro, ripped out the motor/trans etc.. and stuffed a real motor/trans that I had built myself into it. I built some turbo manifolds and stuffed twin turbos and intercoolers etc.. under the hood... and it was all fine and dandy, until I went one step further and installed a roller cam into my non-roller block... at which point the $*&*%$ hit the fan.

I swapped in all-new components for the swap, except the lifters, which were V6 roller lifters (same as V8 roller but .4" shorter for the non-roller height lifter bores) when I did the swap.

The car starts and runs normal, except during heavy throttle, at which point I basically hit a "wall" and it stops making power all together. it does this with or without boost, at any speed, just anything over slight part throttle.

the WEIRD part is, if you drain 4 quarts of oil out of the oil pan, the car runs perfectly normal under WOT. obviouselly this has destroyed my main/rod bearings, but the point is, well, its weird. its almost like my lifters are floating the valves, and thinking this I re-adjusted them with 0-lash, but to no avail.
more information is available here: http://thirdgen.org/techbb2/showthre...hreadid=248813

and if you want pictures or video of the car or information on how to do your own TT setup you can see my site: Http://www.geocities.com/kingtaling

 

I just thinking out loud but maybe your valves are being held open. Your lifters need oil to pump up. If your lifters are not geting the oil they need your valves will not operate properly. This could be why your experiancing power with no oil pressure.