Throttle Body how to decide what size

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loboboy

Jan 14, 2004

#1

• Jan 14, 2004

• #1

ok guys, I have seen several different sizes to use but would like to understand how to come to the correct size for a specific application. The combo will be a 347 with AFR 185's and Spyder intake, and something comparable to a b cam. Any help would be greatly appreciated on how you come to the decision of the correct size.

 

RacEoHolic330

I like to dress like a pretty girl

15 Year Member

Mar 4, 2003

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Allentown, PA

Jan 14, 2004

#2

• Jan 14, 2004

• #2

Go with a 70mm accufab throttle body and egr. that size would be perfect and even allow some room to grow.

 

Klunky

Founding Member

Jan 30, 2002

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Kansas

Jan 14, 2004

#3

• Jan 14, 2004

• #3

loboboy said:

ok guys, I have seen several different sizes to use but would like to understand how to come to the correct size for a specific application. The combo will be a 347 with AFR 185's and Spyder intake, and something comparable to a b cam. Any help would be greatly appreciated on how you come to the decision of the correct size.

Click to expand...

I don't think there is a specific formula...it kind of depends on each situation. I have a 65mm Accufab now and when I ordered my AFR 165's and cam from Ed Curtis, he said it wouldn't be enough and recommended at least a 70. We decided that a 75mm would be best...allows room for growth and really won't kill torque like some people say. I'd say with your stroker and heads you should be looking no smaller than 75.

 

L

loboboy

Jan 14, 2004

#4

• Jan 14, 2004

• #4

Thanks for the help. 75 is what I was thinking with a 80 MAF with 42lb inj. Eventually I will be adding a Turbo and the AEM engine managment system but I need to buy what is going to work now. Does anybody else have suggestions?

 

86Cobra

Founding Member

Jun 6, 2000

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Phoenix, AZ

Jan 14, 2004

#5

• Jan 14, 2004

• #5

You should be running at least a 75mm tb.

Also, PLEASE PLEASE don't put a pos b cam in that motor. You need a MUCH better and larger cam to go with those heads and intake. Call Ed Curtis and let him work up a cam for you.

 

L

loboboy

Jan 14, 2004

#6

• Jan 14, 2004

• #6

Does Ed Curtis have a website that I can browse? I also said a comperable cam, I will do plenty more research before buying th cam shaft. But thanks for the input. I will call Ed and see what he has to say.

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

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Charlotte, NC

Jan 14, 2004

#7

• Jan 14, 2004

• #7

loboboy - you asked for other suggestions - 86Cobra is right; get somebody to help you with a cam choice. Search here for FTI - Flow Tech Induction is Ed's outfit. Also, you can reach Buddy Rawls at http://www.wighat.com/fcr3/.

 

86Cobra

Founding Member

Jun 6, 2000

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Phoenix, AZ

Jan 14, 2004

#8

• Jan 14, 2004

• #8

www.flowtechinduction.com

 

Klunky

Founding Member

Jan 30, 2002

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Kansas

Jan 14, 2004

#9

• Jan 14, 2004

• #9

Oh yea...I forgot to mention that. Go with an Ed Curtis cam or you'll be kicking yourself later.