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Machining heads #577978 01/09/10 09:04 PM 01/09/10 09:04 PM
Joined: Mar 2008 Posts: 724 PA USA F flatiron OP super stock
flatiron OP super stock F Joined: Mar 2008 Posts: 724 PA USA	On a j or x head could some one tell me how many thousands you have to remove to decrease your cc's by 1

Re: Machining heads [Re: flatiron] #577979 01/09/10 09:06 PM 01/09/10 09:06 PM
Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio dartman366 I Live Here
dartman366 I Live Here Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio	I think rule of thumb is .006 per 1cc,,but it can vary up or down a little. Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.

Re: Machining heads [Re: dartman366] #577980 01/09/10 09:27 PM 01/09/10 09:27 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	340/360heads = .0048 cut per cc. course you will have the low of diminishing returns. Also for every .010 off the face .0095 will have to come off the intake side to match the intake surfaces.

Re: Machining heads [Re: MoparforLife] #577981 01/10/10 11:43 AM 01/10/10 11:43 AM
Joined: Mar 2008 Posts: 724 PA USA F flatiron OP super stock
flatiron OP super stock F Joined: Mar 2008 Posts: 724 PA USA	Quote: 340/360heads = .0048 cut per cc. course you will have the low of diminishing returns. Also for every .010 off the face .0095 will have to come off the intake side to match the intake surfaces. The .0095 is machined of the bottom of the intake?

Re: Machining heads [Re: flatiron] #577982 01/10/10 11:51 AM 01/10/10 11:51 AM
Joined: Jan 2003 Posts: 75,008 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,008 U.S.S.A.	Quote: Quote: 340/360heads = .0048 cut per cc. course you will have the low of diminishing returns. Also for every .010 off the face .0095 will have to come off the intake side to match the intake surfaces. The .0095 is machined of the bottom of the intake? no off the intake side of the head .

Re: Machining heads [Re: flatiron] #577983 01/10/10 05:22 PM 01/10/10 05:22 PM
Joined: Jan 2003 Posts: 549 Bristol, Va fasteddie mopar
fasteddie mopar Joined: Jan 2003 Posts: 549 Bristol, Va	Quote: Quote: 340/360heads = .0048 cut per cc. course you will have the low of diminishing returns. Also for every .010 off the face .0095 will have to come off the intake side to match the intake surfaces. The .0095 is machined of the bottom of the intake? Am I doing the math right? If .080 is cut, it takes 16.66 cc out of the chamber. Correct? 2003 Bristol Dragway Sportsman Champion 2016 Bristol Dragway Power Hour Champion

Re: Machining heads [Re: fasteddie] #577984 01/10/10 06:55 PM 01/10/10 06:55 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Quote: 340/360heads = .0048 cut per cc. course you will have the low of diminishing returns. Also for every .010 off the face .0095 will have to come off the intake side to match the intake surfaces. The .0095 is machined of the bottom of the intake? Am I doing the math right? If .080 is cut, it takes 16.66 cc out of the chamber. Correct? you got the right idea BUT its not a linear thing, as you get down into the chamber the chamber gets smaller... the best way to do it is to put X amount of cc's into a level head then you know where you need to go to

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