We tuned a nice LS setup on Sunoco Maximal. First time in it made 450whp @ 28lbs/29lbs. Felt like something was holding it back. Both in vacuum and in boost. Took the Crower 62402-T cams out. Replaced them with Crower 62404 cams. Also added a 3" -> 4" downpipe. First pull it made 404whp @ 15lbs/16lbs. 470whp @ 19lbs/20lbs. 520whp @ 27lbs/28lbs but blew the intercooler piping off. With the larger 404's the car made this power with three degrees less timing than the 402T's. Made some changes to the intercooler piping. Going to dyno again Monday or Tuesday

* LS Sleeved
* LoveFab MiniMe
* Precision GT3567R
* 4" downpipe
* Forged pistons and rods
* Crower 62404 cams
* Crower valve train
* STR (?) intake manifold
* T1 catch can
* T1 cam trigger
* AEM EMS
* RC Engineering 1200cc
* Aeromotive A1000

 

wow just goes to show 404s can be helpfull when boosted

 

keep me posted

 

what's with the sharp leveling off up top?

 

good #

 

Alpha those 404s are awesomeman, ihave them in a customers car, and at 15-16psi made 390 stock bottom end, were runnin about 20psi on itnow, cams feel like there is vtec in an LS, haha

great work ma buddy

 

good job

 

The 404's are the only aftermarket cams we recommend. We've used them in mild setups as well. They do well. The 62402T were horrible in this setup. From partial throttle to full throttle

Could have been the rev limiter

I agree but it has more left in it. Having another issue with the car


404's That's pretty close. I think it made 404whp @ 15lbs. Nice talking to you Mike!

 

nice

 

rev limiter? look at how the powerband climbs, then levels off for about 25mph...that's not the rev limiter, that's either the cams needing some adjustment or the turbo running out of breath, but IMO it should be climbing more still after that.