Print Page - Question about GT40 heads

Title: Question about GT40 heads
Post by: 20th anny 5.o on 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?

Links
58 (http://"http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS-M-6049-X307&N=700+304009+4294840126+115&autoview=sku")

64 (http://"http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS-M-6049-X306&N=700+304009+4294840126+115&autoview=sku")

Title: Question about GT40 heads
Post by: Innes on 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.

Title: Question about GT40 heads
Post by: Bob on 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.

Title: Question about GT40 heads
Post by: Innes on January 25, 2009, 02:55:06 PM

Quote from: Bob;253516

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.

cant agree more
personally AFR good bang for the money.

Title: Question about GT40 heads
Post by: 20th anny 5.o on January 26, 2009, 05:53:04 AM

Thanks guys.

Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: 20th anny 5.o on January 22, 2009, 06:24:51 PM