stock heads vs boost...
Thread Starter
TECH Enthusiast
iTrader: (5)
Joined: Jul 2005
Posts: 626
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From: Rain Island, NY
stock heads vs boost... Dont know if im in the right section or not...
On a boosted forged motor, stock cast heads, & arp head studs, at what power level do the stock heads become unreliable or start having issues?
On a boosted forged motor, stock cast heads, & arp head studs, at what power level do the stock heads become unreliable or start having issues?
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
my first turbo 'mule"
sbc , 23 deg stuff
oem iron heads , 882 castings
oem block , grout filled, iron 4 bolt caps etc..
with twin 57mm turbonetics. made 1016 hp & 960 ft/lbs ,mid 230's @.050
flat tappet cam, 24 psi..
after awhile , it cracked the inside of the combustion chamber, and pressurized water system..\
when engine was put into car, i kept winding her up, my fault, i just keep winding in boost to find the breaking point...
the leaner the a/f , the more combustion pressure..
a bit fatter , i think it would have lasted longer...geta good set of head gaskets, nothing super special , and take little steps with the tune...
should be ok, and better than a n/a engine..
ash
the stock ls1 heads will be fine with boost. with what he said, use good head gaskets, good studs, good valve springs. plenty of ppl use ported stock castings and make some great power. i dont know wht boost level the deck thickness would become an issue with the stockers, someone with more experience may chime in on that one.
