Headers for 347 with manual trans?

[ak70stang 11]

Looking to buy some headers for my 70 with 347 and toploader 4-speed. Will be going 2.5" exhaust system. Want quality ceramic coating. Any opinions? Thanks

[jholmes217 65]

Need some more information. Are you primary wishes horsepower, torque, or ground clearance? I can give some suggestions on full length headers, but I can't speak for mid or shorties as I've never tried them. That's why I crinch whenever I see a speed bump!

 

If you have a 347, I take it you probably either have heavily modified iron heads, or aluminum heads. Your heads can have a impact also, along with other parts. FOr example, if you have a Flaming River steering setup or plan to go with one, you either need the Flaming River headers, or pay to have custom headers made. Some heads have exhaust bolt patterns that can impact header choices also.

 

Give us more deatails on what your goals are for your project, and what modifications you've done or plan to do, and we can give you some better information.

[ak70stang 11]

I would be looking at full length, 425hp, heads are aluminum pro comp, stock steering, stock power brake set-up. The car had a set of headmans before restore but they are rusted out.

Edited July 31, 2012 by ak70stang

[jholmes217 65]

What company made the heads, and have the exhaust ports been ported larger? You are going to want the header tubes to match up to the ports at the head.

[Powershift 19]

Mid-lengths are a good option too, if you are concerned with ground clearance. I got a set of JBA 1 5/8 coated Mid-lenghts for my 408w stroker.

[ak70stang 11]

The only clearance I am really worried about is for the z-bar

[jholmes217 65]

The only clearance I am really worried about is for the z-bar

 

Some headers make spark plug changes really difficult. Also certain types of aftermarket heads have a different header bolt pattern than stock heads, which requires special headers. Thats why I am asking those questions about your heads on your engine now.