Jerry - it would work fairly well (better than a Rochester wink ); but that is the older style Zenith, and parts are pretty much only available from that grouchy old hillbilly in Missouri. Originally a GMC 230.

Dusty - the 2135998 definately corresponds to the 9778, which would be for a GMC 270.

As far as the W-1 leaking at the copper plugs. If the drive plugs, put a drift punch on the plug, and hit it with a hammer. If the threaded plugs with a screw slot, remove the copper "gasket" from beneath the plug, apply 1/2 drop of BLUE Loctite to the thread. Screw in the plug, and allow to cure for 24 hours before placing in gasoline. DO NOT USE RED LOCTITE FOR THIS APPLICATION!!!

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
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