5.0 Mustang Headers

Shawn F. · Post by **Shawn F.** » June 9, 2007, 1:04 pm

Today I ordered a pair of 5.0 Mustang shorty headers for my 66 F100 with a 351W. They are for the foxbody style Mustang. Has anyone here used these on their 66 with a 351W? I am having trouble finding headers that fit this truck and I am thinking these will work. Some say they will and others have said no so I just bought them and will try them out when they come in next week. Just want oppinions here. I am going to run 2.50 inch exhaust as well. I had a 302 in the truck but last year I put a 351W into it and the headers from the 302 did not fit and hit the frame and steering box.
Thanks a lot for any information!

jakdad · Post by **jakdad** » June 9, 2007, 1:57 pm

My experience has been that the headers for a later model truck (77,78,80) will work if they are both F series with twin I Beam. Maybe someone else can shed more light.

Post by **Greg D** » June 9, 2007, 8:22 pm

Shawn, if you ordered "shorty headers" I am guessing they will be at least really close. I do know that shortys will work in alot of applications they are not listed for. Let us know what you come up with, I have been looking for a used set at the junkyard since 04 just to have around to test fit them in a Slick.

FORDMANLCRACKEL · Post by **FORDMANLCRACKEL** » June 9, 2007, 8:39 pm

Shawn i tried the same thing with BBK shorty. but they would not fit on a streight shift, The clutch bell crank is right in the way. The BBK 87 to 96 351 f-series work just fine. probably other brand headers for the same years should work too. The Mustang shorties should work with an automatic in a 65-66. Like Jakdad said long tube 302 headers for a 77 to 79 will work for 351 in a 65-66 2wd i've done this with 302 and 351w.

Lonnie

Shawn F. · Post by **Shawn F.** » June 9, 2007, 9:01 pm

Thanks guys. My 66 has a C-4 tranny so hopefully it will work. I will let you guy's know next week when they come in and I put them on.

*1bad66* · Post by ***1bad66*** » June 15, 2007, 9:18 am

I have a set of shorty headers on my 66 f100 with a 351w and I had to put a small dent in one of the tubes on the drivers side to clear the gear box. I do have the newer style gearbox too so that might make a difference. goodluck

Shawn F. · Post by **Shawn F.** » June 17, 2007, 10:02 pm

Do you have power steering?

FORDMANLCRACKEL · Post by **FORDMANLCRACKEL** » June 17, 2007, 10:29 pm

I didn't have p/s on the 2wd. used long tube. My 4x4 has p/s but the gear box is in front of the axle 1977 chassis, used shorty headers.

Lonnie

Shawn F. · Post by **Shawn F.** » June 18, 2007, 7:46 pm

Oops sorry I meant to ask that last question to *1bad66*.
I was going to try the long tube headers that someone posted before and said they worked but they were just painted and I wanted ceramic coating so they will not rust out.

ABA · Post by **ABA** » June 23, 2007, 6:55 am

I had a 351W in my '72 Short bed.
Ran Mustang shorty's on it no problem.

Power steering and AOD tranny too.

Shawn F. · Post by **Shawn F.** » June 23, 2007, 10:31 pm

Well they seem to work. Only thing now is that the passenger side points towards the frame so I hope 2.50 inch pipes will bend away enough to not hit the frame.