Q&A for a`65GT

You'd have to have pretty tall back tires to be pulling 2400rpm @ 65 mph with 3.23 gears. Check out www.tciauto.com - they have a bunch of calculators for working out rpms, tire height etc. On my '63 I was running 3.23s with 235/60x15 rear tires and was running about 3000rpm to stay with the traffic on tghe freeway. I've just put 2.76s in and it's much more relaxed and gets better gas mileage too. 1st gear is pretty tall - I have a 2.66 1st gear 833 but the stock 318 pulls it easy enough - probably wouldn't be happy with a big cam in it tho.