I want to purchase a nice set of long tube headers for my 77 highboy. I have researched this and can't seem to find a part number. I don't really care what brand they are. I'd prefer ceramic coated headers. I called summit and was told they didn't have any to fit the "highboy". All I seem to see is "77-79 headers fits low boy only, etc..."

Anyone with a highboy that could give me a part number, or anything I'd greatly appreciate it.

 

check into hedman headers. just purchased a set for a 400 ford. going into a 1970 ford 4wd f-250. custom application in my situation. good luck. 89360 is the part number if I'm correct. good long tube header, fenderwell exit. bronco graveyard is another place to check but its a hedman header and they work well for a towing application 4wd situation. 220.00 bucks.

 

According to one site I Found listing the 89360 for sale it says "will not fit 77 highboy with divorced transfer case". Anyone tried these on a highboy??? Looks like a great price on those heeders. Thanks for the info.

 

Have you considered a set of outboard headers ? Straight shot back, no getting around all that stuff in the way.

 

What exactly are "outboard" headers? Does that mean they run on the outside of the frame? If that's the case, that's what I'm looking for since the rest of the exhaust is like that already.

Is there any modifying to the inner fender?

 

yeah this is what you are lookin for. exit outside the frame. sometimes you might have to notch out cab mount in extreme situation. will be fitting up mine this weekend. will have some photos of hedders. gonna break out camera for this day. crewcab is coming along nicely with a 400 ford cobrajet engine. on this header its black and will need a hi temp paint or get coated with hi temp powdercoat. mine will be jet hotted in my situation, ceramic coating$$ nice little header and easy on starters.

 

Cool!
I mostly really see boat stuff searching "outboard headers". Would they be fender well exit headers?
Thanks again.

 

I broke and ordered the hedman 89360 header. Maybe they will fit, maybe not, I'll be the test dummy. I can only hope for the best at this point. These seem to be the best shot. I'll post how they fit later..... with pics.

 

don't want to trash some threads. file or sand exhaust port for smoothness and good seal.

 

For my 75 highboy I got part# 12542 FLOWTECH 1 by Holley. My paper says it only for 67-76 year model... but u can check with Holley

Found a list of part #'s on headers

Ford Pick Up Full Size 1975 - 1976 Flowtech 32540
Ford Pick Up Full Size 1980 - 1980 Flowtech 32502
Ford Pick Up Full Size 1987 - 1995 Flowtech 916271
Ford Pick Up Full Size 1995 - 1995 Flowtech 32504
Ford Pick Up Full Size 1987 - 1995 Flowtech 91627
Ford Pick Up Full Size 1983 - 1987 Flowtech 12560
Ford Pick Up Full Size 1980 - 1980 Flowtech 12502
Ford Pick Up Full Size 1988 - 1995 Flowtech 50371
Ford Pick Up Full Size 1977 - 1979 Flowtech 32520
Ford Pick Up Full Size 1997 - 1999 Flowtech 91670
Ford Pick Up Full Size 1988 - 1995 Flowtech 91628
Ford Pick Up Full Size 1977 - 1979 Flowtech 12564
Ford Pick Up Full Size 1977 - 1979 Flowtech 12520
Ford Pick Up Full Size 1995 - 1995 Flowtech 12504
Ford Pick Up Full Size 1980 - 1980 Flowtech 12522
Ford Pick Up Full Size 1975 - 1976 Flowtech 12542
Ford Pick Up Full Size 1975 - 1976 Flowtech 12540
Ford Pick Up Full Size 1975 - 1979 Flowtech 12500

 

Thanks for the info, good to know if the ones I bought don't work out. They came in a few days ago but I'm prolly looking at two weeks before I get everything back together and will know for sure how they fit.

 

just bolted mine up today and worked. kinda close on the driver side but doable. my 1970 ford 4wd f-250 with a 400 ford 2 barrel head fits. I have about 3" lift on truck with 33" tire and no tire rub. got my other 400 in with the 4v heads on it and will be changing the flange to the bigger port tommorrow. just doing mock up today and checks and other misc things. break out the camera tommorrow. not sure if i will get done but atleast have most everything done i hope.

 

Cool, share some pics man, I'd like to see em. Unfortunitly my heads are gonna have to be sent off to the machine shop. I cracked an ear trying to get one of the broken manifold bolts out.