I'm in the early stages of planning a rear-end swap for my 69 chevy 108 van....I've determined that the rear from 91-96 GM wagons (Caprice, Roadmaster, Custom Cruiser) are just one inch longer (d2d) and have limited-slip and a favorable 3.23 ratio....
I'm aware that I'll have to change the shock and spring mounts and that the bolt circle is 5on5 and I'm okay with that...
What I'm not certain about is the use of 11x2.5 brakes where 9x2.5 currently reside (both setups use 1" bore cylinders) .... As these vans don't have power brakes, and I'm going to keep the 9" drums in front, I'm not sure what to expect for brake bias ratio.....
Will the larger brakes stop better? or will they require a booster to work at all? I'm guessing that proper Front-to-rear bias will require pressure adjustable proportioning valve(s) to drop the brake pressure (front or rear?)
I'm so confused!