1981 carb choke linkage !
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Joined: Jan 2001
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From: Virginia
You should still get a nice seat-of-the-pants boost even with the 351m. If you get a carb that will accept the ford kick-down linkage setup, then you should not have to worry too much about the gearing, when you smash it to the floor the linkage will downshift the trans(if it's a automatic) and when the rpms build after that the 4bbl opens up and gives you some grunt. If you have a manual, just downshift if you need to, the rpms rising will open the 4bbl up.
Ford never offered a 4bbl for the 351m/400 engines, but the aftermarket does sell them. Find a dual plane aluminum at a good price, and then stick a little holley or edelbrock carb on it, around 600cfm should work fine.
Ford never offered a 4bbl for the 351m/400 engines, but the aftermarket does sell them. Find a dual plane aluminum at a good price, and then stick a little holley or edelbrock carb on it, around 600cfm should work fine.
Moderator
Joined: Jan 2001
Posts: 56,984
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From: Virginia
Here's a intake for about $200.
https://www.summitracing.com/parts/w...view/make/ford
Here's a carb for $277. I selected "Ford kickdown" but I don't see mention of it in the description so you probably have to order that separate and add it on the carb. You only need that if you have a automatic trans.
https://www.summitracing.com/parts/h...850s/overview/
https://www.summitracing.com/parts/w...view/make/ford
Here's a carb for $277. I selected "Ford kickdown" but I don't see mention of it in the description so you probably have to order that separate and add it on the carb. You only need that if you have a automatic trans.
https://www.summitracing.com/parts/h...850s/overview/
Moderator
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
Here's one on sale that has the Ford kickdown, and has electric choke also.
https://www.summitracing.com/parts/h...view/make/ford
https://www.summitracing.com/parts/h...view/make/ford
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Don't forget the cam timing as it is significantly retarded on the late M's and 400's. I have a friend with an '80 F250 w/a 400 and the addition of an Edelbrock intake and their 1405 carb plus a straight-up timing set really woke the engine up. He said it felt like it doubled the power.
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