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garyd1961 · 11-22-2017, 08:57 PM

That's a flat tappet cam, I would stick with the L31-R and a hydraulic roller. There is no way I would pay more for a motor with a flat tappet cam. GM didn't switch to a hydraulic roller for nothing, they would have stayed with the cheaper flat tappet if they didn't have a good reason to switch.

11-22-2017, 08:57 PM	#58
garyd1961 Registered User Join Date: May 2016 Location: Henderson NC Posts: 975	Re: What GM create engine to buy for 3/4 ton 72 C20 That's a flat tappet cam, I would stick with the L31-R and a hydraulic roller. There is no way I would pay more for a motor with a flat tappet cam. GM didn't switch to a hydraulic roller for nothing, they would have stayed with the cheaper flat tappet if they didn't have a good reason to switch.