- Last seen
- Joined
- Nov 8, 2018
- Thunderbird Year
- 1979
Hey just bought a beautiful rust free 79 T-Bird (with the super rare bucket seats / centre console option!). Previous owner rebuilt original 302 - added a 4 barrel carb, headers, Flowmaster exhaust etc. He swapped the C6 trans for a lighter C4 with shift kit. All good stuff. Diff gear ratio is 3:8-1. The car has great acceleration but on the highway the low gearing is a problem. At 60 miles per hour the motor is revving about 3,000 RPM - way too high. I wonder what a good gear ratio would be - the motor is good for about 250 HP. Original ratio was about 2.5:1. I want to cruise on the freeway at 70 and have the motor turning at about 2500 RPM. On the other hand it's a heavy car and I don't want it to feel sluggish. Any thoughts? Thanks guys