How many .000 cut per CC on Indy 440-1 heads?

Posted By: Cab_Burge

How many .000 cut per CC on Indy 440-1 heads? - 07/10/18 03:17 AM

I have a pair of Indy 440-1 heads that I bought used last year that needed fixing, I had them fixed and I CC both of them today. One is between 51.8 to 52.7 CC on all four chambers and the other one is between 58.2 CC to 58.8 CC, how many thousands per CC do I need to tell the machine shop to cut the large one to match the smaller one

Thanks in advance for the help

Posted By: ozymaxwedge

Re: How many .000 cut per CC on Indy 440-1 heads? - 07/10/18 03:52 AM

Flat mill .006" per combustion chamber cc.
See here Cab

http://www.indyheads.com/testcat.html

Posted By: mopar dave

Re: How many .000 cut per CC on Indy 440-1 heads? - 07/10/18 04:10 AM

My Indy catalog says .006, but dont recommend any thing smaller 62cc. Your beyond that so there still might be some guess work anyway. .006"=1cc

Posted By: Cab_Burge

Re: How many .000 cut per CC on Indy 440-1 heads? - 07/10/18 05:24 AM

Thanks guys, both of you

Posted By: sc4400

Re: How many .000 cut per CC on Indy 440-1 heads? - 07/11/18 04:10 AM

I still have my original 1993 440-1 heads. They have been milled .100 and are 55cc. I've run them that way for 20 years with no problems. Alcohol for fuel. The CR is 13.5. They are on my sons 451 now in a SC dragster and they just keep going....