Summit Cylinder Heads - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nsuengineer06 · 08-25-2009, 11:12 AM

Moderators: If you need to move this, please do so.

Does anyone have experience with Summit brand cylinder heads? Specifically I am looking at a set of cast iron heads with 72cc combustion chambers, 2.02 intake/1.60 exhaust valves, 1.25" valve springs good to .520 lift and 165cc runners. Summit part number SUM-152123. The valves in these are bigger than the vortecs with only 5cc less on the intake runners. They will be going on a built & bored 327.

I have read a few times that the Summit brand parts are often good parts that Summit has just put their name on. I don't know who makes these, but the price is good and the flow SHOULD be what I'm looking for. Any comments, recommendations, experience?

08-25-2009, 11:12 AM	#1
nsuengineer06 Registered User Join Date: Feb 2009 Location: Natchitoches, Louisiana Posts: 230	Summit Cylinder Heads Moderators: If you need to move this, please do so. Does anyone have experience with Summit brand cylinder heads? Specifically I am looking at a set of cast iron heads with 72cc combustion chambers, 2.02 intake/1.60 exhaust valves, 1.25" valve springs good to .520 lift and 165cc runners. Summit part number SUM-152123. The valves in these are bigger than the vortecs with only 5cc less on the intake runners. They will be going on a built & bored 327. I have read a few times that the Summit brand parts are often good parts that Summit has just put their name on. I don't know who makes these, but the price is good and the flow SHOULD be what I'm looking for. Any comments, recommendations, experience? __________________ 1967 C10 LWB 454/TH400 1971 C10 SWB 1984 C30 LWB Dually 454/4 spd 4:10 2003 GMC Sierra 2500HD Crew 4x4 6.6L Duramax/Allison



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