Reply to "Stroker Motor Questions by Dave F #5972"

Hi Dave, thanks for the compliment you gave 6018. Hope all is going well in regards to recovery from Katrina.

The subject of 351C intake manifolds is a very challenging subject to cover. The combinations of heads, port sizes, port heights, block choices and deck heights create several possible combinations of parts. There are intake manifolds available for just about every possible combination. There are also adapters available allowing intake manifolds to be employed in combinations they weren't designed for. Many (but not all) Clevor specific intake manifolds are machined for the 9.5" oem deck height Windsor block. However a competent machine shop can remove the proper amount of material from a Clevor intake manifold and make it compatible with blocks having a 9.2" deck height.

Since you are interested in individual runner (IR) fuel injection (FI), I shall limit my thoughts to those intake manifolds. I'm not aware of any IR intake manifolds manufactured for 351C 2V heads mounted on a 9.2" deck 351W block. However, you have a couple of good alternatives.

The ports, intake manifold bolts, etc of the 351W heads align very closely with those of the 351C 2V heads, the Windsor ports are just a bit smaller. So an IR manifold designed for a 351W could be adapted for your application. The manifold would have to be machined for the 9.2" deck height of your block and 8 of the intake bolt holes (which are all verticle in the Windsor) must be drilled to mate with the non-verticle bolt holes in the cleveland head. Finally the coolant pasages in the Edelbrock heads would require plugging & drilling for the Windsor style coolant passages. The advantage in proceeding in this direction is that you would have at your disposal the Windsor style thermostat housing cast into the Windsor intake manifold. I think you will find that the manifolds sold by TWM are designed for 351W motors.

A second route to take would be to employ two of the 4 runner IR style manifolds (or 4 butterfly throttle bodies) that bolt directly to the heads with no valley cover joining the two sides. These manifolds require the engine builder to fabricate a simple sheet metal cover for the lifter valley. Hilborn manufactures such 4 butterfly IR throttle bodies. PI Motorsports sells a complete IR FI system using the Hilborn throttle bodies. I'm only guessing, but I would assume Hilborn manufactures a 4 butterfly throttle body for 351C 4V ports & 351W ports, so again you would end up employing parts designed for a Windsor head. A thermostat housing adapter, available from several sources, would have to be employed in this application.

take care

your friend on the DTBB