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Author
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Topic: e7 heads question
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Norgs
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Member # 649
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posted
 
 
how much of a power difference do ported e7s make? what are they similiar to?
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R.I.P. Miles 12/8/02
R.I.P. Mike 12-2-03 cant believe it. gonna miss u man!!
Posts: 1031 | From: Tempe...formally San Ramon | Registered: Dec 2001
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Blue Oval
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Member # 2548
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posted
it really depends on how much they are ported ive seen 20hp gains with MILD porting.I have ported a set that flow as good as the GT 40-X heads, that was with extensive porting.
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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Stimson
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Member # 51
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posted
For the money, you're better off finding some GT40P heads instead of having a shop port your stock heads.
Posts: 2373 | Registered: Jun 2000
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cobraman_1994
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Member # 467
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posted
GT40 heads are around 400 or so. some cheaper, some more expensive. i would go that route ![[patriot]](graemlins/patriot.gif)
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86 GT
Posts: 4882 | From: eldorado hills | Registered: Sep 2001
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Hungry Hippo
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Member # 537
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posted
do some research and home port those bitches! you should see 15rwhp with some modest exhaust porting and bowl work. more if you mill the heads and get a 3 angle. you'll need better valve springs with the e7's or gt40's, about 100 bucks from crane.
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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Fostang
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Member # 3752
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posted
If your wondering about the heads on the motor this the break down of what was done exactly and maybe people could come up with a guesstimate of how much hp it added.
Intake were all opened in a v shape to mate to felpro gaskets of course leaving in coarse to break apart the gasoline as it went in. The bowls were also blended and any real sharp edge I rounded it best I could.
Exhaust the bump was eliminated opened up to a set of 1 5/8 header tubes, with the bowls blended and edges again rounded off.
Took me quite sometime to do it. It's my 6th set of heads I've done and have only ruined 1 that I really went crazy on. If only the wall would have been a little ticker I was just about to stop I got it so nice and perfect I could fit 2 fingers no problem with nice round shape followed to the exit for the headers. Then bam I see a tiny hole.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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