How many degres ABDC is it?

 

i dont think anyone knows because you cant find the advertised duration anywhere.... i have even looked on GM parts direct where they have listed every single cam you can get from GM.

 

The best I can do-
Duration @ .006" - 272* I, 281* E

Hope this helps.

 

well i got 68 degrees ABDC and about 52.5 degrees overlap.

 

does anyone know for sure what #s are right for this ?

 

i found adv . duration of 279/287 but could not find what the intake valve closing . is 68* right? , tring to get my dcr w/11.6 sc.

 

does anyone know?

 

LT4 hot cam has a 272/281 advertised on a 112+3.
Intake closing is 65*

FB1=== give me your engine spects deck height,gasket thickness,piston depth,CC of valve reliefs,combustion chamber volumn,ect. and I will figure it for ya.

 

Deck Height=9.018 (Had .007 decked)
Gasket= 0.039
Piston= -5cc
Compression height piston= 1.560
Combustion Chamber cc= 52
Will be a 0.040 over bore
5.7 Rods, 3.48 Crank

Thank You

 

With a .039 gasket ya got 11.62 static and 9.23 DCR. If it was mine I wouldn't be affraid to run it that high WITH a good dyno tune.
With a .049 gasket(stock) ya got 11.29 static and 8.98 DCR. Thats more in line with the thinking for MAX with pump gas.