How much to gain from porting upper and lower intake?

88Stangboy

Banned

Dec 12, 2005

342

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Greenville, SC

Jan 8, 2006

#1

• Jan 8, 2006

• #1

My friend Kyle has a 91GT and he has basically the same set up as me,
ported heads, bigger valves, F cam, shorties, and a Typhoon manifold. He
was wondering how much hp would porting the upper and lower intake be
worth. I told him i definatly felt the difference after i did it but he wants numbers, so...about how much?

 

1

1SLO306

My 97 GTP owns you ALL!

Mar 31, 2005

904

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Muhlenberg, ky

Jan 8, 2006

#2

• Jan 8, 2006

• #2

10-15 but i might be wrong

 

88gt

Founding Member

Aug 2, 1999

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Drillers cabin

Jan 8, 2006

#3

• Jan 8, 2006

• #3

Look around here for "tmoss"...He has a website, not sure what it is..he will be able to help naswer some questions for you...


Found it... www.tmossporting.com

 

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 8, 2006

#4

• Jan 8, 2006

• #4

I was beaten to the TMOSS part, but I would like to add that there probably isn't too much to be gained (cost vs. performance)

 

RacEoHolic330

I like to dress like a pretty girl

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Mar 4, 2003

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Allentown, PA

Jan 8, 2006

#5

• Jan 8, 2006

• #5

i did my stock intake myself a while ago and i noticed a little bit, but it was not worth all the time and effort.

 

N8Miller

I need NOS....make it 2 of the big ones

Founding Member

Jul 26, 2000

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Kingston, PA, USA

Jan 8, 2006

#6

• Jan 8, 2006

• #6

ported stock heads? if so, its not worth doing the intake. the typhoon prolly flows more than the ported stock heads, so the time/money into that would be the best investment.

 

88Stangboy

Banned

Dec 12, 2005

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Greenville, SC

Jan 9, 2006

#7

• Jan 9, 2006

• #7

These heads were PORTED, the runners were made larger, had bigger valves installed, 2.02 intake, 1.60 exhaust. These are 1968 302 heads i believe im not sure though, i think thats what he said. He's had alot of work done on them over the past year. He has a Typhoon intake, which is basically a cheap copy of and RPM intake, and these intakes are rough!!!! Go and run your finger over the asphalt on your street and you'll understand what i mean. And the runner mouths are definatly smaller than the runners on the heads, i would say by about a mm or two. I went ahead and told him to get it done. It can't hurt and your intake should always outflow your heads by a few cfm anyhow. But now im curious about how much hp/torque it should net.

 

tmoss

Gettin Wired

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Jun 28, 2001

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Saint Louis, MO

Jan 10, 2006

#8

• Jan 10, 2006

• #8

It's worth it alright - but results vary due to the rest of the combination being right or not. The increase in airflow when done RIGHT is about 50-60cfm - it's up to you to turn that into power.