tiger13e

I am getting ready to put a boss 302 with a c-6 trans. in a 1985 mustang. I was wanting to use some headers on it. Does anyone know what headers I need to buy? Will a set of 351C 4v headers for a 1969 to 1970 mustang work or do I need the 69 - 70 boss 302 headers. I am sure they are not a direct bolt in they may need moved some. Will the c-6 just bolt in or do you need to massage the floor pan and firewall a little bit?

I am a new member and this is my first post.

USMC1775

you mean Boss 302 with high port heads?

Welcome to our forums

FORD TOUGH

Welcome to the forums. Are you sure the engine is a boss 302? Does it have screw in freeze plugs? If it does it is a boss. Im pretty sure you will need a set of headers for a boss not a 4V Cleveland.

Portmaster

Chances are you will have to go with a custom made header. I have a C6 for my Fox and header selection is real slim with Victor Jr heads on a 5.0 windsor block. I would imagine you will have to use a tube style K member and have them made. I'm not 100% sure on this as Ive never been faced with this situation. You just don't see many Actual old Boss 302 engines winding up in Fox mustangs. If it is an actual Boss engine you could probably sell it for enough to build the entire car. If it's the new Boss engine it will be easy to find headers.

tiger13e

Sorry for getting everone excited, but it is not a factory boss 302. It is one that I built, it consist of a 302 bored 60 over with forged flat top pistons and 289 rods, balanced. Then I put a set of 351 4v closed chamber heads on it with port plates from MPG heads on the intake and exhaust side. Put the big valves in the heads and machined the heads for screw in studs, with rockers and guide plates. Then put a factory boss 302 intake on it with a pro systems 750 dp holley. ARP oil pump shaft and high volume oil pump and custom ground hydrolic cam and a 2500 stall. Nice little street engine.

Portmaster

Get a header kit and a Tig welder, you are going to be busy I think, lol I wish I had some advice for you but I lost as far as off the shelf headers. I built a set for a 351C in a Fox a few years back, Never again

woodsy

Call George at Accufab and ask him if he can modify a 351C fox swap header, or grab an off the shelf 351c fox swap and cut and weld