turbo on a sbc question??
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From: Houston Tx.
turbo on a sbc question?? hey guys wasn just wondering how much power i can get out off a 2-bolt sbc motor.. planning on putting one on mine but dont want to over boost it??? 
thanks
thanks I had a 350sbc built for a lot of procharger boost, and had a choice of old blocks to use. The builder at the machine shop preferred that I drop off a 2 bolt block to convert to a splayed 4 bolt, saying it would be stronger than a factory 4 bolt.
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there was a guy on the mustang forum a while back trying to build a very budget twin turbo. he used a four blot fist and got over 600rwhp form that. he then decided to use a BONE STOCK 2 bolt block and got over 500rwhp i think.
you could always just try it! if you cook the block then you can always upgrade to a aftermarket one or find a 4 bolt one
thanks CHris.
you could always just try it! if you cook the block then you can always upgrade to a aftermarket one or find a 4 bolt one
thanks CHris.
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No matter what you use, the main caps are going to walk with big boost.
I'd use the 2 bolt block, with the splayed cap mod, and use bigger/longer dowels to help keep them still..
I'd use the 2 bolt block, with the splayed cap mod, and use bigger/longer dowels to help keep them still..
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Breaking the caps is not the issue, cap walking is. With 4-bolt billet steel caps, mine still walk and fret the block at 16 - 24 psi boost. I've heard of main bearing failures and cranks breaking due to cap walk because the mains are no longer aligned if the caps are moving around. I would be scared to see what would happen on my motor with 2-bolt mains since they walk so much with 4-bolts. A local guy with a 2-bolt BBC and nitrous had his walk so much that they welded themselves to the block.
Mike
Mike
Originally Posted by chuntington101
there was a guy on the mustang forum a while back trying to build a very budget twin turbo. he used a four blot fist and got over 600rwhp form that. he then decided to use a BONE STOCK 2 bolt block and got over 500rwhp i think.
you could always just try it! if you cook the block then you can always upgrade to a aftermarket one or find a 4 bolt one
thanks CHris.
you could always just try it! if you cook the block then you can always upgrade to a aftermarket one or find a 4 bolt one
thanks CHris.
http://www.turbomustangs.com/smf/ind...?topic=61219.0
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Originally Posted by Dragframe
try over 660 hp at the wheels on a stock shortblock
http://www.turbomustangs.com/smf/ind...?topic=61219.0
http://www.turbomustangs.com/smf/ind...?topic=61219.0
Chris.
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Originally Posted by Dragframe
try over 660 hp at the wheels on a stock shortblock
"I think it may be severe crank distortion and cap walk chewing on the main bearings a bit. . . . I pulled the pan and looked at #2 and #3 mains. They are down to the copper . . . The crank is smooth but the main bolts were kind of loose and the caps were walking around quite a bit and fretted the block a fair amount . . . Only the cap walk tells the story."
I wouldn't really call this "holding up to the power."
