Question about GT40 heads January 22, 2009, 06:24:51 PM I was looking on summit's website looking at their heads for the 302 and noticed that they have 2 cc sizes 58 and 64. What would be the difference between the two if any performance wise?Links5864 Quote Selected
Question about GT40 heads Reply #1 – January 25, 2009, 03:46:26 AM 58cc going to have more compression than the 64s if you’re going w/ a stock 302 w/eye reliefs go w/ the 58cc’s they will give you approx 10;1 compression. but you should consult w/ your machine shop. Quote Selected
Question about GT40 heads Reply #2 – January 25, 2009, 07:46:24 AM are you thinking about buying those gt-40 alum heads? I would research it more, for that kind of money you can get a much nicer head. A couple that come to mind are : trickflow, edelbrock, afr etc... ask around see what the faster 302's with aftermarket heads are running. Quote Selected
Question about GT40 heads Reply #3 – January 25, 2009, 02:55:06 PM Quote from: Bob;253516are you thinking about buying those gt-40 alum heads? I would research it more, for that kind of money you can get a much nicer head. A couple that come to mind are : trickflow, edelbrock, afr etc... ask around see what the faster 302's with aftermarket heads are running.cant agree more personally AFR good bang for the money. Quote Selected
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