86lxnotch

iTrader: (3)

im not really looking for XX psi is all they take but more power level they have survived at. hitting the dyno in the morning and wondering were i should stop. stock truck cam/92 octane numbers in sig. i have put a mild custom cam in it and have 15 gallons of e85 going in the car. will most likely stay at current boost level but MIGHT go up depending on how things are going. i do plan on studs but probably wont happen till the winter

Bob@BruteSpeed

iTrader: (16)

I've reread those first two sentences over and over and I'm still not quite sure what you're asking. lol If you're at 15 psi on the stock head bolts, I certainly wouldn't go any higher. Bob

86lxnotch

iTrader: (3)

I added a cam and I'm adding better fuel is it safe at 15 pounds still with the extra power it will make

BadgeZ28

iTrader: (28)

No one can tell you how long it will survive at 15 or more boost. The simple fact is you are asking every moving part to perform way out of their safe design limits. You are living on the edge.

86lxnotch

iTrader: (3)

699/780 on 19lbs/E85

alexcoreas

iTrader: (1)

Please post a video. Love the car

86lxnotch

iTrader: (3)

Denmah will be posting One then

86lxnotch

iTrader: (3)

water pump is bad and blowing water all over. will be addressing the issue in short order

alexcoreas

iTrader: (1)

That's just nuts. How much money do you have invested in the setup

BottleFedZ346

iTrader: (17)

Very nice!

I have heard of another member on here making 690whp for a few years with stock head bolts!

denmah

iTrader: (2)

ive had great luck with all 4.8 5.3 and 6.0 motors right up to and a little over 20psi on stock gaskets, bolts etc.

they are beasts

i am always conservative on timing and pumpgas+meth for safety

when it quits making good power with timing i quit.

sometimes... lol

stock48

iTrader: (17)

It's power/cyl psi not just boost psi that does it. For me mid 10's/high 12xmph will lift them after awhile in my 4850LB truck. That's around 16psi. In a lighter chassis you might get away with a bit more.

86lxnotch

iTrader: (3)

kinda hard to say cause i already had the chassis/trans i got the motor,bell, and a few other things