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1972GMCsierra4x4 · 02-12-2014, 10:55 PM

I can't afford the vortec heads and a different intake manifold right now (broke and in high school). Also, GM-power, I'm looking to keep my 9:1 compression so I can run 87 octane

02-12-2014, 10:55 PM	#8
1972GMCsierra4x4 Registered User Join Date: Feb 2013 Location: Winchester Kansas Posts: 145	Re: Dart Angle Plug Heads: good or bad? I can't afford the vortec heads and a different intake manifold right now (broke and in high school). Also, GM-power, I'm looking to keep my 9:1 compression so I can run 87 octane