The wheels on the yellow truck look like the ones on both my 454-30s. The rims are 6.5 X 20 Pacific Wheel single locking ring, 6 lug on 8" bolt circle Hub Pilot with Lugs nuts and compression washers.

I would like to see some close up pictures of the wheels we have been discussing.

If you clean up one of the wheels it will most likely have the manufacturers name stamped on it.

I run 9.00x20 tube type tires and have no problem cruising down the highway at 55. My 302 has a 2 barrel with governor on it. And no problem find tires and tubes. Bought another parts donor truck for $500.00 just for the wheels. Someday I will install a Spicier 5531 Aux Box.
\
Good Luck

All Hail Klaatu and Gort

Last edited by GMCPic; 10/31/2013 10:16 AM.
Dance like no one is watching,
Sing like no one is listening,
Love like you've never been hurt.

1948 GMC FC101 1/2t Pickup w/270 and SM420
1948 GMC FC253 1t Factory 80"x9' Flatbed Dually
1948 Chevy COE 2 Ton 8'x15' Flatbed
1950 GMC 354-24 2 Ton 8'X12' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton 8'x14' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton Cab and Chassis
1942 Clarkator 6 MILL-44 Heavy Aircraft Tug
1942 Ford (9N) Moto Tug with 1/2 yard Loader
1947 Oliver OC3 HG-42 Tract-Crawler Bull Dozier w/6' Blade