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Dwight Southerland · 02-07-2016, 04:57 PM

Lyn -
If it helps, I had a GK 431-D camshaft that was 248 degrees duration @ .050" for both intake and exhaust, 110 lobe separation and .265" lobe lift. It was for 57-66 SBCs with the NHRA specs of 300 degrees duration intake and exhaust, 78 degrees overlap and the .398" valve lift. It was the first "cheater" cam I ran in the 283 Chevelles.

02-07-2016, 04:57 PM	#4
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,002 Likes: 64 Liked 783 Times in 195 Posts	Re: General kinetics cam Id. Lyn - If it helps, I had a GK 431-D camshaft that was 248 degrees duration @ .050" for both intake and exhaust, 110 lobe separation and .265" lobe lift. It was for 57-66 SBCs with the NHRA specs of 300 degrees duration intake and exhaust, 78 degrees overlap and the .398" valve lift. It was the first "cheater" cam I ran in the 283 Chevelles. __________________