LT1MAN

iTrader: (6)

can i use my stock 2 bolt lt1 block to build a 383? how much is too much horsepower for it? any other method of modifying the block? engine girdle for lt1? seen them for ls1. or do i just need to find a 4 bolt main lt1?

95 Formula

iTrader: (2)

what are your goals with the motor. If its a street motor and your not gonna spray the house down on it you will be fine. My motor is still a 2 bolt main block and went to 7000+ for 5 years and for theh little time the jug was on it made 565 ft lbs of torque. Just use good arp bolts or studs. If you want to modify it you can splay the mains.

Ed Wright

iTrader: (1)

I prefer a two bolt block myself. If your building a real thumper, it's best to use a two bolt block and have splayed 4 bolt steel caps installed. If your building a mild engine, you don't need anything else anyway.

Good luck, Ed

LT1MAN

iTrader: (6)

thanks, thats what i wanted to hear. the guy who told me i would blow the bottom out of my engine used to build big huge drag motors.
my goal is a strong street sleeper,383, i want at least 400rwhp and i want to occasionally go to the track with some slicks.

tell me about splayed 4 bolt steel caps, how does this work? does that make it a 4 bolt?.
thanks yall

383LT1S10

I agree..2 bolt blocks are better to start with.