Progress Thread 4bbl Carb For '66 Gt 289

S

Steel Ride Mustangs

New Member

Feb 11, 2018

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Tomball, TX

Feb 11, 2018

#1

• Feb 11, 2018

• #1

Hi All...
My first post... I have a '65 GT Fastback 289 A/C, Pwr Steering, Automatic...
My Holley is too big and want to go back to OEM/Original period. I believe 1.08 venturi is (480CFM) .
I see a 1.08 4BBL for sale but has code of C6SF A.
Owner said it's for a 390 engine... Would this still run good on my car??
Thanks Richie

 

rbohm

Founding Member

Apr 12, 2002

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tucson,az

Feb 11, 2018

#2

• Feb 11, 2018

• #2

yes it will run fine on your engine, though it might be a bit rich since the 390 likely uses larger main jets. not a big deal though, you just need to get some smaller jets and swap them in place. but before tuning the carb, run it first.

 

S

Steel Ride Mustangs

New Member

Feb 11, 2018

6

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1

Tomball, TX

Feb 11, 2018

#3

• Feb 11, 2018

• #3

OK Thank you for your help!!

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Feb 11, 2018

#4

• Feb 11, 2018

• #4

its been a long time, but as i recall, if you cant find ford jets for the carb, i believe holley jets will fit nicely, but i think they have a different nomenclature regarding jet sizing. but it has been about 25 years since i dealt with one in tuning.

 

WORTH

20+ Year Stangneter

Nov 18, 2002

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Cape Cod, Ma.

Feb 12, 2018

#5

• Feb 12, 2018

• #5

a GT with a slushbox would be a GTA

 

Realmongo

I prefer to be called "Evil Genius"

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Oct 10, 2001

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Western Mass

Feb 18, 2018

#6

• Feb 18, 2018

• #6

Mike's Carburetor Parts has the proper jets now:

http://www.carburetor-parts.com/Aut...uretor-Main-Jet-Custom-Assortment_p_4538.html

 

Last edited: Feb 19, 2018