DemonicZ

probably see 8-10 lbs of boost at most, will stock worked heads be fine or aftermarket?

stock block
stock internals
140k miles
1 7/8 long tubes
CME
FTP lid
02 10 bolt
rebuilt 4L60E with 3000 converter

allout06

iTrader: (11)

i wouldnt even bother touching the heads

F110Mech

iTrader: (2)

i wouldve done a search and seen that people are pushing 800+ hp through stock heads...

yes, stock heads are fine

Blackpanther99

iTrader: (8)

Oh heck yeah, stock heads will be more than fine.

allout06

iTrader: (11)

you stock heads will make more power than the bottom can handle.

GarrettM

iTrader: (6)

Check out mr2liter's post. We just made over 700 on his with an f1r on a stock bottem end and the heads have never been off of it. Was about 15#s on e85.

Old Geezer

iTrader: (3)

Don't worry w/ the bottom end. The trans and rear will give up B4 the crank/rods do..

allout06

iTrader: (11)

lol...true story

Huron Speed

iTrader: (1)

the stock heads will be fine for that low boost level. IF you decide you want to step it up some, alot of guys run 317's

on my personal car, i plan to try out a set of LSA heads.

-Casey

Troy5061

iTrader: (19)

I run stock 317s at 10.5psi and its fine, a buddy ran Livernois cnc'd 243s at almost 20psi. Like these guys said the motor will be fine but will make more than that transmission and rear end want. The 3-4 clutches in my 4l60e hate my turbo.

11SECSS

iTrader: (199)

What about running a set of stock 243's.