I just replaced the rear main seals in a 56 235 with the neoprene seals from Napa. Nothing could have been easier. I removed the rear main cap, pulled out the rope seal, installed the new one per the instructions and re-torqued the bolts. It was not necessary to loosen anything else. This truck is a daily driver and was a major leaker. It almost got the owner kicked out of his home by his neighborhood association. It's been 2 months, dry as a bone and he doesn't have to move. Another happy ending. Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine