Quote Originally Posted by HarryH View Post
back tires are American Racing 10" and stand 28" tall. 350 cubic inch HO with approximately 9.1:1 compression, 330 hp at 5,000 rpm and 380 ft./lbs. of torque at 3,800 rpm.
The 28" tall tires are not extreme. More critical than peak hp and torque is where the torque comes in as you're accelerating under load. For example, my torque curve comes up quite steep from 1000rpm, and is nearly flat from 1800rpm out to 5200rpm where it starts falling off a bit. That means (to me) that if I were running an automatic, a converter with stall in the 2400 range would be a pretty good fit. Do you have the curves, or just peak values?