Turbo 5.4L with LS3 heads, 16 psi, 992hp/798tq video
10-29-2014, 04:31 PM
#41
Thanks guys
I agree with colt, the smaller stroke isn't necessarily going to help it spool because it takes a bit more RPM to build the same cylinder pressure as a larger engine, if both engines are close to the same build otherwise. This old setup was a bit lazy to spool in the car, basically it was a poor combination of parts; small engine, large cam, low compression, and big turbo with a 6 speed. Once it spooled though, it took off and didn't stop pulling!
I changed up the setup this year, and can't wait to get it running again. I went with twins this time around, turbonetics billet 6468s. The engine is a bit stouter as well, with TFS 255 heads, a new cam, and raised the compression up a few points to 12.5:1. It picked up 120hp from the old setup all motor. It's going to be a nice efficient setup on boost, more so than the old setup for sure. Heres a pic of the car in the build up process, and video of the new engine setup dyno!
I agree with colt, the smaller stroke isn't necessarily going to help it spool because it takes a bit more RPM to build the same cylinder pressure as a larger engine, if both engines are close to the same build otherwise. This old setup was a bit lazy to spool in the car, basically it was a poor combination of parts; small engine, large cam, low compression, and big turbo with a 6 speed. Once it spooled though, it took off and didn't stop pulling!
I changed up the setup this year, and can't wait to get it running again. I went with twins this time around, turbonetics billet 6468s. The engine is a bit stouter as well, with TFS 255 heads, a new cam, and raised the compression up a few points to 12.5:1. It picked up 120hp from the old setup all motor. It's going to be a nice efficient setup on boost, more so than the old setup for sure. Heres a pic of the car in the build up process, and video of the new engine setup dyno!
