Exhaust Manifolds

[Dodge Aspen R/T 318]

Hello everyone, I picked up a 360 and I’m thinking about running exhaust manifolds,don’t know if I’m ready to spend mucho dollars on a set of tti headers quite yet..I’ve been reading up on the better flowing Magnum and Jeep Gran Cherokee manifolds..My question is,just out of curiosity why can’t you run two of the same manifolds, why is it preferred to run one of each,my car is a 78 Aspen with automatic trans on the column..2nd question,do one of you members have a set of the better flowing manifolds for sale? Thanks, Jim..

 

[volare 1977]

my guess would be clearance issues

 

[Duke5A]

I wouldn't beat myself up over it. Magnum manifolds do flow better, but not enough to stress over. Especially if you already plan on replacing them.

Run the 318 maifolds and weld the manifold heat flapper on the passenger side open. They flow enough for 300 HP.