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carleton tidd · 08-31-2009, 12:52 PM

thanks; I may have misread the number tho': I think it's R-278/427-2s-8. Am I correct in thinking that the duration is 278 @.050?. Also, thanks for the correction on the "S". We have this cam in a super pro front engine dragster which has run a best of 5.89 in the eighth; upgraded to a 383 with the same cam and the car still runs 6.0"s. The engine has early chevrolet heads, 2.20 intakes and 1.60 exhausts; pocket ported only. Carb is a Holley 750 double pumper. Any advice will be appreciated.

08-31-2009, 12:52 PM	#3
carleton tidd Junior Member Join Date: Aug 2002 Posts: 6 Likes: 0 Liked 0 Times in 0 Posts	Re: crane roller cam help thanks; I may have misread the number tho': I think it's R-278/427-2s-8. Am I correct in thinking that the duration is 278 @.050?. Also, thanks for the correction on the "S". We have this cam in a super pro front engine dragster which has run a best of 5.89 in the eighth; upgraded to a 383 with the same cam and the car still runs 6.0"s. The engine has early chevrolet heads, 2.20 intakes and 1.60 exhausts; pocket ported only. Carb is a Holley 750 double pumper. Any advice will be appreciated.