Lt1 block Q's 2 bolt vs 4 bolt
02-04-2009, 04:33 PM
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Lt1 block Q's 2 bolt vs 4 bolt I wanted to no around how much hp a 2 bolt main will handle??It will be boosted also...And what will a 4 bolt main will handle??
02-04-2009, 04:42 PM
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I made 537/650 through and automatic with the stock 2 bolt main block. i have sense had mine splayed but i plan on making a few more. Like ss said, what are your plans, because having your block splayed and 4 bolt main caps installed is a rather large explense.
02-05-2009, 10:29 PM
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02-06-2009, 12:03 AM
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+1 splayed 2 bolt beats the hell outta a 4bolt. my buddy looked for a while for a decent priced 4 bolt but since they were all "vette" blocks everyone wanted stupid amounts of money so he just poneyed up the difference and had a 2 bolt block splayed....
02-06-2009, 12:21 AM
#9
My 383 is going to be Callies 4-bolt splayed. Probably don't need it, but i am still up in the air whether i am going to supercharge it in the future, so better to build it right the first time. then again, prob gonna have to pull the motor to change the compression for supercharger anyway. I beat the living **** out of my cars so i am gonna go all out and hope it holds up.
02-06-2009, 07:06 AM
#11
A factory four bolt main block is stronger than a factory two bolt block. Corvettes came with four bolt main blocks. There have been reports that some F-body cars had four bolt main blocks towards the end of production, probably because they had more Corvette engines made than they needed.
A block with splayed four bolt mains is stronger than a factory four bolt main block. You can only have a splayed main block by tacking a two bolt block and having a machine shop do the conversion.
Other than these differences, the blocks are identical.
The strongest blocks are two bolt blocks that are converted to four bolt splayed mains with steel caps and studs.
A block with splayed four bolt mains is stronger than a factory four bolt main block. You can only have a splayed main block by tacking a two bolt block and having a machine shop do the conversion.
Other than these differences, the blocks are identical.
The strongest blocks are two bolt blocks that are converted to four bolt splayed mains with steel caps and studs.
02-06-2009, 07:10 AM
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A factory four bolt main block is stronger than a factory two bolt block. Corvettes came with four bolt main blocks. There have been reports that some F-body cars had four bolt main blocks towards the end of production, probably because they had more Corvette engines made than they needed.
A block with splayed four bolt mains is stronger than a factory four bolt main block. You can only have a splayed main block by tacking a two bolt block and having a machine shop do the conversion.
Other than these differences, the blocks are identical.
The strongest blocks are two bolt blocks that are converted to four bolt splayed mains with steel caps and studs.
A block with splayed four bolt mains is stronger than a factory four bolt main block. You can only have a splayed main block by tacking a two bolt block and having a machine shop do the conversion.
Other than these differences, the blocks are identical.
The strongest blocks are two bolt blocks that are converted to four bolt splayed mains with steel caps and studs.
02-06-2009, 08:31 AM
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theres the explanation i was trying to come up with. I remember with my old drag third gen, was building a 377 sbc and came across that discussion with my engine builder, ended up converting it to a 4 bolt main.
02-06-2009, 11:01 AM
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umm we picked up a long block from a firebird for 100 bucks! but u shold be able to find a block between 100-400 bucks...remember u can go with one from a caprice or whatever as long as its the 5.7 not 4.3....
02-06-2009, 04:47 PM
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