friend with 5.0 has a question...

T

t3-svo

New Member

Apr 18, 2005

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Mooresville NC

Jan 16, 2006

#1

• Jan 16, 2006

• #1

My friend has a 91 5.0. He is looking at doing a few upgades. he has a question..


I was looking at upgrading my 5.0 with a H/C/I upgrade and i got a question about heads...are the GT-40 X "turbo swirl" heads as good or even better flowing than the name brand companies of AFR, Edelbrock, or twisted wedge? they are supposed to be better flowing than the original GT-40 heads and the specs are as follows
-the intake is 1.94", exhaust 1.54"
-the intake port volume is 178 cc, exhaust=62cc
-approx 25 pounds lighter than each cast iron GT-40 heads

 

T

t3-svo

New Member

Apr 18, 2005

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Mooresville NC

Jan 17, 2006

#2

• Jan 17, 2006

• #2

bump

bump

 

B

bcd

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Jun 23, 2005

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arab al

Jan 17, 2006

#3

• Jan 17, 2006

• #3

i'm not positive but if i was gonna get gt40 heads i would buy iron heads and have them ported and save a ton of money. the turbo swirl heads are supposed to be the best gt40 though.

 

cjman15

Banned

Apr 15, 2004

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Fairfield, PA

Jan 17, 2006

#4

• Jan 17, 2006

• #4

The "X" heads are made of aluminum which makes them lighter. I doubt they outperform any Eddy, AFR or Trickflow tho...

 

M

macx

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Jul 18, 2004

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SE Missouri near Cape Girardeau

Jan 17, 2006

#5

• Jan 17, 2006

• #5

I'm fairly certain I've read flow test reports comparing
most of the popular heads, and although the X heads
are better than the other GT heads, as far as I remember
they don't stand up to the AFRs and other good aftermarket brands.

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

1,796

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Woodward Ave.

Jan 17, 2006

#6

• Jan 17, 2006

• #6

You can go to allfordmustangs.com and compare for yourself. http://www.allfordmustangs.com/Detailed/630.shtml But from the looks of it, I'd say they are close but the exhaust side kills the GT40 line of heads.

 

I

IntenseBlue

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Jul 10, 2005

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Jan 17, 2006

#7

• Jan 17, 2006

• #7

They're about 10cfm down on the intake side compared to AFR 165s. The all-ford site's X303 numbers look like Y numbers. Way off of X numbers.

 

super302

I'd do anything for free Bapples

May 29, 2004

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Davenport, IA

Jan 17, 2006

#8

• Jan 17, 2006

• #8

cjman15 said:

The "X" heads are made of aluminum which makes them lighter. I doubt they outperform any Eddy, AFR or Trickflow tho...

Click to expand...

there is a flow chart of all the popular heads in the 94/95 Tech section (sticky at the top)
I'm too lazy, or i'd look for you