4in''stroke and 30 over Piston = what cubic inch?
03-31-2009, 06:17 PM
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4in''stroke and 30 over Piston = what cubic inch? There is a formula to figure out cid...dose any one know it... i think its like bore x stroke divided by 8 = cid..... also if i have a 4inch stroke and a 30 over pison what cid is it,if its a ls1 block? thanks
03-31-2009, 07:59 PM
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a 408 is a 6.0 block with a 30 over and a 4 inch stroke. You cant go that much over on a stock ls1 without sleeves in the block.
the formula to figure it out is the total displacement of the engine, so you take the area of a circle(pi x radius^2) times the stroke of the engine times number of cylinder.
the formula to figure it out is the total displacement of the engine, so you take the area of a circle(pi x radius^2) times the stroke of the engine times number of cylinder.
03-31-2009, 08:10 PM
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a 408 is a 6.0 block with a 30 over and a 4 inch stroke. You cant go that much over on a stock ls1 without sleeves in the block.
the formula to figure it out is the total displacement of the engine, so you take the area of a circle(pi x radius^2) times the stroke of the engine times number of cylinder.
the formula to figure it out is the total displacement of the engine, so you take the area of a circle(pi x radius^2) times the stroke of the engine times number of cylinder.
03-31-2009, 10:20 PM
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Actually, the formula for diplacement is pi/4*bore squared*stroke*# of cylinders. Example: .7854*15.194*3.622*8=345.781 for our beloved LS1. Hope this helps!
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03-31-2009, 10:40 PM
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Ok so who has a 383 out of a 5.3? I pulled a 5.3 out of a customers truck and I'm going to build a 383 I just want to know who has used a 5.3 block and if your hitting it with nitrous, how big of a shot are you using?
03-31-2009, 10:50 PM
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Unless I messed it up then an ls1 30 over (3.898 + .030 = 3.928) with a 4 inch stroke is 388
