| nevermind65 |
08-09-2005 06:13 AM |
GT40 heads. What's the difference?
I've been looking at heads on Ebay to get an idea what they will cost down the road. I see a few different variations of GT40 heads for a 302. Some are called GT40p, and others leave out that designation altogether. What's the difference and do they really flow a lot better than the factory 302 HO heads?
Thanks.
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| JustOne |
08-09-2005 06:57 AM |
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| blykins |
08-09-2005 07:06 AM |
Hey JustOne,
I didn't get a chance to run the Desktop Dyno stuff last night...I'll try to do it this evening when I get in from work......
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| Excaliber |
08-09-2005 09:09 AM |
It would appear from the Web Site AFR are far and away the best heads out there. VERY impressive flow numbers starting at .100 lift.
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| Dangerous Doug |
08-15-2005 09:23 AM |
Nevermind65: I've been looking at GT-40 heads, and once I looked at the flow numbers, decided to go Trick Flow or AFR. Not sure which right now. PM me with your email, and I'll send you an Excel file that compares flow numbers.
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| W2zero |
02-20-2006 09:45 PM |
The GT40P heads were standard on the 5.0 Explorers from 97 to 2000. They shared some design with the iron GT40 but outflow them with smaller valves. and have no emission ports. Also have a revised spark plug angle towards the center of the chamber. The thing to take note of is the area under the curve in their flow. I run them on my Fairlane because they are like me. Cheap, easy, work very well and they are overweight.
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