Again. Help with DCR please.
10-26-2006, 11:38 AM
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Again. Help with DCR please. I have been trying to figure out my DCR for my new setup. I downloaded the calculator, but I can`t get it to let me put any values in it. So would someone please help me. Stock 01 LS1. Ported and milled .018 853`s, .042 head gasket and comp cam 228 cam. Here`s the cam card for the cam.
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10-27-2006, 04:06 PM
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I am as far form an expert on this as you can get, so take this fwiw.
The cam card was a little hard to make out, but it appears to be a 228/228 with #3718 lobes, ground on a 113 LSA and installed 2 degrees advanced, for a 111 ICL.
Assuming a stock LS-1 shortblock, .042 gasket, and 63.67cc heads, my calculations yield a SCR of 11.017 and a DCR of 8.280. The IVC is 45 ABDC (@ 0.050).
Installing with 4 degrees of advance (109 ICL) boosts the DCR to 8.428 and pulls the IVC back to 43 ABDC.
The cam card was a little hard to make out, but it appears to be a 228/228 with #3718 lobes, ground on a 113 LSA and installed 2 degrees advanced, for a 111 ICL.
Assuming a stock LS-1 shortblock, .042 gasket, and 63.67cc heads, my calculations yield a SCR of 11.017 and a DCR of 8.280. The IVC is 45 ABDC (@ 0.050).
Installing with 4 degrees of advance (109 ICL) boosts the DCR to 8.428 and pulls the IVC back to 43 ABDC.
10-27-2006, 04:35 PM
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Originally Posted by jebcamaro
Yes, your assumptions are correct. Thank you very much. I assume that is a safe DCR to run on the street with 93 octane gas, right?
8.28 is a solid boost over the stocker's 7.07.
