408 Compression ??'s
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From: Orange county n.y.
408 Compression ??'s Ok i have a 408 W/ AFR 225's that were milled to 69cc.
i have have to do some work to my car and i will be removing my heads and while there off i'm thinking about milling them another 30 Thou to get them to 63-64cc. How much will this help my compression with the large cam i have. Cam is 253-257 643/645 112+4. Is this worth it?
Thanks Shawn
i have have to do some work to my car and i will be removing my heads and while there off i'm thinking about milling them another 30 Thou to get them to 63-64cc. How much will this help my compression with the large cam i have. Cam is 253-257 643/645 112+4. Is this worth it?
Thanks Shawn
Originally Posted by destroyerSS
Ok i have a 408 W/ AFR 225's that were milled to 69cc.
i have have to do some work to my car and i will be removing my heads and while there off i'm thinking about milling them another 30 Thou to get them to 63-64cc. How much will this help my compression with the large cam i have. Cam is 253-257 643/645 112+4. Is this worth it?
Thanks Shawn
i have have to do some work to my car and i will be removing my heads and while there off i'm thinking about milling them another 30 Thou to get them to 63-64cc. How much will this help my compression with the large cam i have. Cam is 253-257 643/645 112+4. Is this worth it?
Thanks Shawn
Thread Starter
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From: Orange county n.y.
Originally Posted by 67SS509
Milling .030 will lower your chamber size by 5cc or raise the static compression .68, assuming flat top pistons this should put you around 12 to 1 compression. With that much duration and 112LSA I would say do it. It will help your DCR and that's what makes a strong engine.
