Reply to "Identification & Advice Regarding My Pantera's Cylinder Heads"

It looks like you have aluminum A3 heads which have raised intake ports. (They are very desirable).

The following is a post from George.

Cool heads, the A3 heads are possibly my favorite 351C compatible canted valve heads. There are 4 manifolds that were offered by Ford that may be of interest, they are all old manifolds. The original one offered by Ford was cast by Edelbrock & looks like a Torker, but the runners were slightly raised and re-sized as an exact match for the A3 cylinder heads. The manifold was designed for 9.2" deck 351C blocks only. The Ford SVO casting number & part number is M-9424-A331. I have an un-used version of one of these I'd be willing to sell. The second one has the exact same M-9424-A331 casting & part number, but it was cast by Jack Roush Engineering. It is a high rise "spider" type manifold. The runners of this manifold were sized for the smaller C302 cylinder head ports, and need to be port matched for the A3 heads. This manifold was also designed for 9.2" deck 351C blocks only. The third manifold (also cast by Jack Roush) has a slightly changed casting & part number, M-9424-B351. It is very similar to the Jack Roush A331 manifold, but it was designed to fit either 9.2" deck 351C blocks OR 9.2" deck 351W blocks. Like the other Jack Roush manifold, the B351 manifold would have to be port matched to the A3 heads. Finally there is the M-9424-A351 Jack Roush manifold, it is identical to the B351 manifold but it was machined for 9.5" deck 351W blocks. This manifold can be cut down to fit a 9.2" deck block. Either of the last 2 manifolds would work with your 9.2" deck G351 block. All of the later manifolds sold by Ford were designed for Yates C3/C3H/SC1/D3 heads with higher intake ports, and if they could be cut down to mate with the A3 heads at all the flanges and valley rail sealing surfaces may end up being paper thin. Edelbrock also offered some high rise manifolds for Ford's various racing heads, but I'm not versed in their part numbers. I'm sure the Parker & TFC manifolds from Australia could be port matched to the A3 heads, but they're designed for 351C blocks, I don't remember them being offered for 351W blocks. CHI probably has a 3V manifold for 351W blocks that could be port matched to the A3 heads. Finally, I saved the best for last, there's the new Air Supremacy manifold sold by Scott Cook, designed by Darin Morgan, it should be a close match to the A3 heads as well, I think Scott can cast it to fit the 351W block. You may want to give Scott a call. http://www.scmenginedevelopments.com/