I own a 1988 RX7 Convertible that I have done a conversion to a 327 Chevy engine, TH400 Transmission. The stock differential gears are too low an I have not been able to find anything to change. RPM's are too high for normal driving.
This is not a race car it is my personal street car.
I would love to talk with someone who knows about changing or converting the rear suspension to something else, such as a corvette or something with higher gears.

Charlie Gross

 

327? Was it lying around or just dirt cheap? If you're going SBC, seems like a 383 would be the way to go. Let's see if anyone here can help with this gear problem you've run into.

Mario III

 

Granny's sells TASA kits:
http://grannys.tripod.com/2ndgenrx7chevyv8.html

Also, we have a separate subforum for engine conversions:
https://www.rx7club.com/forum/forumd...prune=-1&f=118