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SDT1DYI · 10-12-2022, 09:53 PM

Having some experience with the SBC 2 barrel combo, the change of the cam intake lift from .430 to say .390 Is going to make very little difference, if any at all.
The Challenge is the flow restriction of the 2 barrel, not a .040 dfference in valve lift. You can get only so much CFM thru the Carburator Venturi size no matter if you have a . 500 lift camshaft

Steve Teeter Stk/SS 620..
B/SA, G/SA, M/SA

10-12-2022, 09:53 PM	#12
SDT1DYI Member Join Date: Nov 2016 Location: Indianola Washington Posts: 396 Likes: 0 Liked 450 Times in 145 Posts	Re: thanks again nhra Having some experience with the SBC 2 barrel combo, the change of the cam intake lift from .430 to say .390 Is going to make very little difference, if any at all. The Challenge is the flow restriction of the 2 barrel, not a .040 dfference in valve lift. You can get only so much CFM thru the Carburator Venturi size no matter if you have a . 500 lift camshaft Steve Teeter Stk/SS 620.. B/SA, G/SA, M/SA