428 cobra jet mustang exhaust

SUPERGONZO · #1 (**permalink**) 10-15-2003, 08:22 PM

Has anyone tried to enlarge a set of stock 428 CJ 68' mustang exhausts? The stock size is 2 1/4". I would like to get 2 1/2" on there with a x-pipe.

Are there any better exhaust that will fit a 68 428CJ without going to headers??

FFR428 · #2 (**permalink**) 10-18-2003, 07:11 AM

you might check the 428 cobrajet registry for an answer. Also the Ford FE forum if no one can help you here. Good luck, G.

SUPERGONZO · #3 (**permalink**) 10-20-2003, 03:36 PM

Are there any better exhaust that will fit a 68 428CJ without going to headers??

haven't gotten any response there either

ed cougar · #4 (**permalink**) 10-20-2003, 04:33 PM

You can have them extruded if you have the $$ not sure how much it cost nor where to have it done only heard about it from shop talk. For what it's worth they have an extrusion process whitch pumps a heavy grit claylike substance through the manifold under hydraulic pressure whitch removes material as it smooths the insides to a polished finish, maybe someone more knowledgable on the process can elaborate. I used a dremmel on my cj manifolds and tried to smooth them up inside but I grew impatient and gave up on it.



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