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  Autolite 4100 on aftermarket manifold?

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Author Topic:   Autolite 4100 on aftermarket manifold?

Posts: 153
Registered: Sep 2002

posted 09-07-2002 10:47 AM     Click Here to See the Profile for deadhead   Click Here to Email deadhead     Edit/Delete Message   Reply w/Quote
I'm considering an Autolite 4100 for my mild 289 daily driver. Does anyone have any experience running this carb on an aftermarket manifold? Although I'm seriously considering a stock Ford four-barrel manifold, I'd prefer to go aluminum, and the Cobra replicas are expensive.


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Posts: 1746
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 09-07-2002 11:10 AM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
According to Pony Carbs, there are problems with 4100's on some aftermarket intakes. My research (done here at M&M and in a few carb forums) told me (a) the 4100 is the best carb for the 289/302, and (b) the stock intake manifold is good, albeit a little heavy. For a "mild" engine, stick with the stock manifold, and, if you can get it, an Autolite 4100 with 1.08 venturis. I had to pay $175 for mine 1.12 venturis are a lot more plentiful, but start moving beyond "mild".
All this is theory though. Some M&Mers will have practical experience af all this.

[This message has been edited by Fastback68 (edited 09-07-2002).]

[This message has been edited by Fastback68 (edited 09-07-2002).]

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Posts: 19751
From: Lyons, IL, USA
Registered: May 99

posted 09-08-2002 11:12 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
No problems at all.

Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl

Quote: "I never met a magazine mechanic I liked."

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Posts: 92
From: Ft. Lauderdale
Registered: Jun 2001

posted 09-10-2002 12:54 AM     Click Here to See the Profile for PonyDoc   Click Here to Email PonyDoc     Edit/Delete Message   Reply w/Quote
I have a 4100 C5ZF-C on an Edelbrock Performer intake. The engine has been ported & polished w/ a mild cam. I was at Pony carbs in May and had Jon adjust the carb for the engine. It gets 15-17 MPG at hwy speeds, 70+, with a manual overdrive and a 3.00 rear. It does 3300 RPM @ 90 MPH. I ground all the letters off the intake and powdercoated it to look stock. BTW- This carb was done by Jon in 1990 and has about 192,000 miles on it.

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