dude you are talkin to some fugged up shops.

you would be BETTER off with some nice ferrera valves, the stockers would have a shortened live.

 

Seems to be the trend, which is why I'm glad I have all of you to run this **** by. Do the shops just think I'm a sucker or what??

 

25psi here on stock valve, stock 317's heads, no porting or polishing, just a 3 angle valve job, and 918's. P.S. 25 psi up to 5k rpm only) Hell, I have not even lifted the head yet. I only have the arp head studs. I am not making 408 power (only 680hp&780tq) but psi is psi right? I think it would be interesting to pull the head and see what the valves looks like... If it ant broke dont fix it.

 

wow, how often are you running that boost pressure? dd?

 

dang, 680hp from a 4.8 .

nice!!

 

nope used to be 4.8 5-speed now 5.3 with 6.0 heads and t56