3:55 or 3:91?

mullinax95 said
This will help you choose the correct gear you want.

http://www.bigblockdart.com/techpages/speedtire.shtml

1969GTS said
I'm running 391's with a 28" tire on a 15" rim with a 3500 stall. At 70 MPH I'm running about 3200 RPM so long trips would get expensive. Here are some great tech calculators that are easy to use.

http://www.moparsunlimited.net/tech_calculators.htm

Hell, I'm running that with my 3.23's and 14" wheels!

Back in "the day' we used to have 2 sets of wheels, 15" tall tires for cruising
and 14" 50's or 60's for tracking. Might be cheaper in the long run!