What do you guys consider to be the best header preformance wise for the 400? How about the best bang for the buck? I was hopeing everyone could comment on what they have and their engine output and if they were happy with the power gains and the construction of the headers. I was also hopeing someone could comment on the ultra-cheep dynomax headers. Are they crud or worth having for a heveily modifyed 400? I was considering geting a pair but they said they were for low and mid RPM range gains. Do you think they would be crud for a hevily street modifyed 400 that revs to a max of 6000 RPM compaired to other headers?

-Jim

 

I have bought some dynomax pipes and used them on a 400 in my dirt track car. They have held up well.

 

My first Open Stock Motor I built I use the Aussie 2V heads with the Dynomax's cermacoat headers .. they worked good to 6500 Rpm....

 

Hedman works good for me!!!..I have a set of hedman long tube headers on my 351M. It runs well, like 13.30's in a 1/4 all day long. A daily driver too, but i thin the price for them was roughy like $280...

check'em out

 

Whatever you do, go with the ceramic coated headers!

 

Im not sure if he makes them for your application, but Stans Headers are made from much heavier pipe than any others Ive ever seen.

 

I've got a set of "Cylcone's" from Hedman that have been on for about 18 years. They still looked so good a couple of years ago I had them ceramic coated.

 

I'm also looking for suggestions for my truck. Doesn't seem to be a lot of choices or I'm just looking in the wrong place.