My 69 firebird has the Th-400 and I believe the 2.78 to 1 rear end. Hoping to switch to limited slip in the next couple weeks. If i am in 3rd gear, where the tranny is 1.00 ratio, then switching to 3.08 ring and pinion would raise my engine rpm by 10%...yes?
The car is pretty snappy even with the 2.78 gears, but I think would run a little "crisper" at a slightly higher rpm.
What gears have the rest of you used with a Th-400 tranny? How about 3.23 gears?
