Factory 4bolt main 350SBC block Peak Horsepower
#1
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Factory 4bolt main 350SBC block Peak Horsepower
I got a 89 camaro that im building for the strip on a budget. Does anyone know how much horsepower a factory 350sbc with 4bolt main and steel crank can handle safely/ without reliability problems? I believe the motor came out of a 70's corvette. Im being told that 550hp +, I'll start having bearing problems. Is there any ways to strengthen bottom end??
#2
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Re: Factory 4bolt main 350SBC block Peak Horsepower
Originally Posted by sinistercamaro
I got a 89 camaro that im building for the strip on a budget. Does anyone know how much horsepower a factory 350sbc with 4bolt main and steel crank can handle safely/ without reliability problems? I believe the motor came out of a 70's corvette. Im being told that 550hp +, I'll start having bearing problems. Is there any ways to strengthen bottom end??
#5
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Don't know what the HP was but my friend Jimmy Smith pulled his down after about 200 passes, the car ran mid 6's on alcohol @ 3,000 lbs, so i would image about 600 HP, he had the 3 center main webs cracked, but no bearing problem, this was just maintinance. He went back together with a 4 bolt splade caps on a 2 bolt blk. i was running a blown alcohol with a stock blk. no bearing issues but the cylinder cracked,
I'm guessing 600 is pushing the envelope.
JMO
Zip.
I'm guessing 600 is pushing the envelope.
JMO
Zip.
#7
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Its amazing Dart rates their SHP block at 600 horse the the GM blocks with stock caps are better then a Dart,
Over 38 years of building einges we sure have seen guys have problems with their blocks when getting over 500 horse with stock cap blocks unless it had the 2482 caps on them.
We do install splayed caps on quite a few of the older blocks but they have to pass a sonic test before andy thing is done.
Over 38 years of building einges we sure have seen guys have problems with their blocks when getting over 500 horse with stock cap blocks unless it had the 2482 caps on them.
We do install splayed caps on quite a few of the older blocks but they have to pass a sonic test before andy thing is done.
#9
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Originally Posted by MEMRACING62
A STOCK GM BLOCK IS BETTER THAN DART SHP? PLEASE EXPLAIN.
#10
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Originally Posted by hink
Originally Posted by MEMRACING62
A STOCK GM BLOCK IS BETTER THAN DART SHP? PLEASE EXPLAIN.