Autolite 4100

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May 19, 2012 | 11:39 PM

PRIMERED79 SHORT BED

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Laughing Gas

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Autolite 4100

Doing some research on the Autolite 4100 for a future mod.
Can i run a 4100 on a 4v manifold for a 400 motor?

May 19, 2012 | 11:51 PM

HIO Silver

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From: NorCal

yes. the 4100 is a square bore carb which will fit any manifold that can take a Holley 4150 pattern. Super easy to rebuild.

They typically come with 1.08 or 1.12 stamped in the clockface... the former is 480 cfm and the latter is 600 cfm and purrrfect for a 400M.

May 19, 2012 | 11:56 PM

PRIMERED79 SHORT BED

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Laughing Gas

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Ok school me real quick, did ford make a factory 4v manifold for the 400?
And would any aftermarket manifold bolt up the 4100 then?

May 20, 2012 | 12:22 AM

HIO Silver

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From: NorCal

Quote:

Originally Posted by PRIMERED79 SHORT BED

Ok school me real quick, did ford make a factory 4v manifold for the 400?
And would any aftermarket manifold bolt up the 4100 then?

Dunno.... but 77-79s came with the 351M or 400 and that's subject to emissions testing which I avoid like a plague. I'm an FE and Windsor guy..... 75 and earlier.

If it's an aftermarket with a square bore, then my money is that it can accommodate a 4100 since the aftermarket typically caters to Holley square bore carbs.

IIRC, there are 351M/400 manifolds with and without EGR but both are square bores and 4100-able.

May 20, 2012 | 01:16 AM

fordman75

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From: South central, Minnesota

No Factory 400 4V intakes.

Yes the 4100 will fit aftermarket 400 intakes.

May 20, 2012 | 03:32 PM

PRIMERED79 SHORT BED

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Laughing Gas

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What would be a good manifold to run with the 4100?
I would like to keep the heat stove, and if i can ditch the egr valve that wouldn't hurt my feelings.

May 20, 2012 | 03:51 PM

fordman75

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From: South central, Minnesota

A 4V intake!

It's been a few years since I shopped for 400 intakes. But I believe there are only 3 available.

An Edelbrock Performer, Edelbrock Performer EGR or a Weiand Action Plus. They are all pretty close to the same. I liked the more solid carb mounting base of the Weiand and the Performer EGR intakes over the Performer intake. But otherwise they are pretty close to the same.

If you want to keep the heat stove then you need to go with the Edelbrock Performer EGR intake.