Performance help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bill8333 · 02-21-2008, 12:01 PM

Hi Y'all. I'm trying to figure out what it's going to take to get my s/b up to 9.6 compression with 76cc 882 heads. I have the bucks to buy the summit steel heads 64cc but I’m not sure if I should go with the vortec or the stock ones. The truck is a 1981 GMC 1/2 ton 4x4 so it needs to pass smog in this state. What heads will give me better performance. The summit brand heads are 550 bucks till the end of the month then they go up 100 bucks and if I go with the vortec heads I’ll need to buy an intake as well. So that money for the intake will come out of my bottom end rebuild, like cutting corners on pistons. What do y'all think is the better way to go?

Thanks Bill

02-21-2008, 12:01 PM	#1
bill8333 Registered User Join Date: Apr 2007 Location: Reno, NV Posts: 89	Performance help Hi Y'all. I'm trying to figure out what it's going to take to get my s/b up to 9.6 compression with 76cc 882 heads. I have the bucks to buy the summit steel heads 64cc but I’m not sure if I should go with the vortec or the stock ones. The truck is a 1981 GMC 1/2 ton 4x4 so it needs to pass smog in this state. What heads will give me better performance. The summit brand heads are 550 bucks till the end of the month then they go up 100 bucks and if I go with the vortec heads I’ll need to buy an intake as well. So that money for the intake will come out of my bottom end rebuild, like cutting corners on pistons. What do y'all think is the better way to go? Thanks Bill __________________ 1972 K-10 L/B 4x4 Matching #'s 350 4 speed from the factory. P/S P/B 1981 GMC 1/2 L/B 4x4 one owner truck. 4" lift 2004 Dodge Cummins Diesel 4x4 Q/C S/B 1986 Dodge D150 L/B 2WD



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