Does anyone have a source for headers that fit a highboy with 351m? I would like to stay away from the fender exit.

 

i'd go to summitracing.com an see if any are listed. if thats the engine that originally came in the truck somebody out there makes a set. I got mine from summit, hooker supercomp and i love them. 1 3/4 primarys 3" collector. bout all thats avalible for a 351m, but i could be wrong. some other companies i know of are blackjack, hedman, summit, flowtech. Hope this helps, i know i had trouble finding a good set for my 400 when i built it

 

I was hoping that someone with a 77 highboy would chime in. Most venders dont know about the 77's being differant than any other truck.

Thanks

 

I bought a 77 crew cab 4x4 w/ 351M and the prior owner had installed a set of headers, I will try to check when I get a chance to see what brand they are, there was a tag on them, I just can't remember what it said

 

Flowtech 12520 Flowtech Headers#

check these out, they are reasonably priced and i think they'll fit your truck, hope this helps

 

Just checked on the flowtech's they only fit lowboys?

 

bringing an old thread from the dead, what headers did you finally end up going with? i'm looking into a 77' f250 with a 351m right now that needs headers and i'm starting to see how limmitited the options are as you mensioned.

 

I have not found any yet, but still looking. Hopefully someone that has installed a set will chime in. If I do find a set and they work I will be sure to let you know. Thanks

 

I posted on the old thread that fordmuddin brought back..... I've got a perfectly original (except for headers) 77 highboy that I bought recently. The previous owner had just put them on, I want this truck all stock. I will trade these headers even up for the correct manifolds.

 

My truck is completely original, I dont know how good they will be when I remove them. They are almost 33 years old. I dont know if you would want them. I would be interested in yours, either buy them or if you could tell me the manufactor and numbers. Thanks

 

Jeffs Bronco Graveyard has them, They are the ones I'm gonna get for my 77 highboy 351m. I think Hedman makes them but Jeffs has them in stock. Good luck

 

yeah, the only place i've heard about is bronco graveyard, i'll have to check them out.


is this what you were talking about?Exhaust Manifold Right 351M - 400

If not, which ones, i wasn't really able to find any others.

 

i do not know so i have to ask.
whats the diffeence between the high boy and others?

 

the highboy is from the factory 4" higher than the other models. (4" blocks standard in the rear and more leaf springs in the front with more arch) the truck also has a lower hanging divorced transfercase with a longer or equally long front driveshaft as the rear driveshaft. The highboys have the tank in the back of the cab so the gas cap is located high on the cab. along with varius other differences but you get the point. The engines available were the 360FE, 351m, 400m and that may be all, not sure, maybe others but i know that no 460's, 429's, or 390's would come standard on the highboys.

 

Hedman Headers, 351M 400