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Jim B · 11-10-2011, 02:52 PM

Cam specs are listed in crankshaft degrees. Since the cam spins at 1/2 engine speed one 360º cam rotation takes 720 º of crankshaft rotation. Hence 10º of cam rotation results in 20º of crankshaft rotation. If you suspect the cam may be ground wrong be sure to double check the cam centerline. If that checks to specs the dowel location is wrong on the camshaft and advancing the cam 10º (crankshaft) in your scenario would be OK. (the intake 112º would become 102º but don't forget the exhaust lobe is going to move 10º retarded)

11-10-2011, 02:52 PM	#2
Jim B Member Join Date: Dec 2008 Posts: 100 Likes: 0 Liked 1 Time in 1 Post	Re: OK, what the heck am I doing wrong? Cam specs are listed in crankshaft degrees. Since the cam spins at 1/2 engine speed one 360º cam rotation takes 720 º of crankshaft rotation. Hence 10º of cam rotation results in 20º of crankshaft rotation. If you suspect the cam may be ground wrong be sure to double check the cam centerline. If that checks to specs the dowel location is wrong on the camshaft and advancing the cam 10º (crankshaft) in your scenario would be OK. (the intake 112º would become 102º but don't forget the exhaust lobe is going to move 10º retarded) Last edited by Jim B; 11-10-2011 at 02:58 PM.