I bought some of the P30 wheels for my 1 ton dually. Hub bore fits perfect, but the lug holes are 5/8" I think (larger than the 1/2" lugs I have now). I decided to go ahead and put the front ones on anyway to see how the truck handled, and they run great without any give on hard braking. Huge difference in the way the truck feels with modern radials.
The back inner wheels won't fit over the drums though. I got the wheels off of a 1991 P30 with the cummins 4BT and I think either the 14 bolt GM rear, or the Dana 70. I don't know why the rear inners are that much different according to the P30 swap article by Grigg. Who knows, maybe the P30 was newer than what the guy said and it had the wrong wheels for my needs.
Since the 3-piece rear tires were totally shot, I went ahead and put the P30 wheels on the back outers (left the inners off). This should work okay until I get the GM14 bolt axle swapped out, then all of the wheels should fit.
I should be okay running just the outers on the back as long as I don't load the truck down, right? I took it for a test drive and was pretty hard on the truck and it felt wonderful with all new radials on it.
Hopefully I can get by like this until the rear axle swap.
Any advice is welcomed.
Thanks,
Skybum
