It is well established that the rear drums are not balanced, which is why Revcon specified the rear must be spin balanced on the vehicle. You might still be able to use Centramatics or Balance Masters on the rear. Just re-drill the new bolt pattern. Otherwise you can put a bag of ceramic beads in the tires. That is what I have on my non-Revcon motorhome.
_________________ Dave
The Flying Fortress '83 Revcon Prince 31' FWD 502 w/Howell/GM 16197427 ECM/Edelbrock MPFI,Thorley's & Magnaflows, 4L85E 4 speed, KoniFSD, Yes it is SOLD
FMCA F298817
|