89.Fifth
Well-Known Member
I'm still not sure which ones could possibly work on our cars but I don't think I want to go the headers route yet.
Keep your 318 manifolds as there is barely any discernable difference in flow rate between ALL small block manifolds. Up to 300 hp none of them are a bottleneck and after that they all are.
After 300 hp a set of shorty headers is the best compromise. Personally I'll never run long tube headers again.
Thanks. I've seen someone running shorties on these before. Do all A-Body shorties fit?
That is a pair of Jeep Grand Cherokee Magnum manifolds.
View attachment 36153
To the original question, those manifolds will fit and work fine with a couple of exceptions:
- The exhaust connection will be in slightly different position – so some minor exhaust work will be needed.
- The A.I.R. ports on your cylinder heads will need to be plugged first (if applicable).
- Need to find a way for a heat manifold – if you plan on driving a lot in frozen temperatures (32’ F / 0’ C).
The A.I.R. ports look like:
View attachment 36154
Not a very good picture.
If you are looking for less maintaince and less noise than headers, those would be the most cost-effective version if you are at/in 300 HP or thereabouts range, that fits an FMJ.
BudW