Originally Posted by Bob37pont
On my Pontiac the front track width was about 3 narrower than the Camaro rear track (some of that was the tires, 235 vs 215), and I had plenty of clearance inside the fenders for the wider front track. Mine had GM pattern 9" rotors when I got it, didn't have any worries about spacers/adapters.
Bob, I have a question for you or anyone else familiar with stock 9" brakes on large street rods (say 3500 lbs plus). I would expect lackluster performance since they were designed for a Pinto, but mine seem worse than that- stepping on them is very similar to a mechanical brake system, not remotely capable of a panic stop, "stomp and pray" . The only car I've owned with brakes this bad was a 1919 Chevy. I'm wondering if something else is wrong with mine. I have jacked up the wheels and confirmed they all are working. Also confirmed that my brake booster is operational.
As far as the track goes, checked today and found the rotors have 1" wheel adapters and front track is narrower than back, so any widening of the track by a new disc system, won't be an issue.