351m Intake Manifold

Reply Subscribe

Thread Tools

Search this Thread

Jan 31, 2005 | 09:51 AM

KJKozak2

Thread Starter

Posting Guru

Joined: Feb 2002

Posts: 2,404

Likes: 3

From: Cleveland, WI USA

351m Intake Manifold

I have a 79 F150 w/351m and a 2bbl carb that I use for snow plowing. I HATE the 2bbl and want to go to a 4bbl. This may be a dumb question, but is there a different intake manifold for the 4bbl, or are they all 4bbl intakes with a 2bbl adapter?

If I need a new intake, are used ones hard to find?

Thanks and sorry if it sounds dumb.

Kevin K. - Wisconsin Chapter Leader

Jan 31, 2005 | 11:09 AM

79f250&70Mustang

Freshman User

Joined: Mar 2003

Posts: 26

Likes: 0

There was not a factory 351M 4bbl intake, however there are aftermarket ones from Weiand & Edelbrock that work quite well.
The main problem with the switch would be the local emissions laws.

Used ones come up all the time on "the bay".

HTH
Alex

Feb 1, 2005 | 07:29 AM

KJKozak2

Thread Starter

Posting Guru

Joined: Feb 2002

Posts: 2,404

Likes: 3

From: Cleveland, WI USA

Thanks Alex.

I never would've guess there wasn't a factory 4bbl intake for a v8. As for emissions, I already stripped it all off the motor. The county I live in has no emissions testing so that's not really an issue.

Thanks again.

Kevin K.

Feb 1, 2005 | 09:34 AM

MBDiagMan

Cargo Master

Joined: Dec 2004

Posts: 2,232

Likes: 3

From: NE Texas

The reason that there was no four barrel offered on these engines is due to the era in which they were made. As far as I'm concerned, the seventies was the low point of Detroit. All their R&D money was going toward trying to comply with the "Massacre of '68" emission laws.

I'm sure that either the Weian or Edelbrock will work well. I have an Edelbrock on my '78 400 with a 600 Holley that I built from a few junk carburetors. It works quite well.

Good luck,
Doc

Feb 1, 2005 | 09:40 AM

79f250&70Mustang

Freshman User

Joined: Mar 2003

Posts: 26

Likes: 0

I ran the Weiand, with a 600 Holley, for a while and it ran quite well.

Feb 1, 2005 | 09:59 AM

KJKozak2

Thread Starter

Posting Guru

Joined: Feb 2002

Posts: 2,404

Likes: 3

From: Cleveland, WI USA

Another dumb question...

Is it possible to machine the 2bbl intake to take a 4bbl carb? Without looking at it, I'd guess the bolt pattern is the same and you'd just have to enlarge the hole.

Is there more to it than that?

Thanks!

Kevin K.