Quote:
as it calculated, no. But I think your number for the intake valve closure is off. What cam is it? You need the spec for .050 lift... not .005 or .006 lift....
 my cam is a little [Email]259@.006[/Email], [Email]208@.050[/Email] hydraulic roller, 112LSA installed at 108, and my intake close point, going by .006" lift advertised is ~57.5 degrees ABDC.... 0.50 duration is 32 degrees ABDC....mine is a 318, 9:1 measured, no quench (.083" quench distance), and runs on 87 octane.
I'm guessing the number you really need to use to determine DCR is going to be closer to 60 deg. ABDC....
EDIT, seeing the cam you choice, 274 .006 intake duration (what comp uses for "advertised duration"), if installed at 106 ICL, would net you an intake close point 63 degrees ABDC, not 38. the KB calculator says to use .050 ICP+15 degrees, which nets 53 deg. ABDC. using .006 numbers you get
8.2 DCR, using the KB method nets 8.8....it should run fine on 92 or 93, you may have to be a little conservative with your distributor's timing curve.
Last edited by patrick; 10/21/09 11:21 AM.
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