360-340 Hp exhausts manifolds on a 73 318?

[tedsweet]

my 73 dart 318 swinger has a rusty aftermarket dual set up hooked to the stock 318 manifolds. . I have a set of 73 340 HP manidolds that i want to use. will it make a difference?

 

[tedsweet]

?????????

 

[Robbie2734]

It works well on my 67, they will flow better. Are you replaacing the whole exhaust too?

 

[tedsweet]

yes

 

[Abodybomber]

Yes, if you want dependable,you nailed it.About 300/320 hp becomes a limit .