I didn't build it I got it this way other than tuning. 440 bored.060 4.15 crank. I don't know the comp. ratio but it's probably about 9 to 1 at its best. Runs on 87, kerosene whatever. It's a 660 cam 260 dur. solid roller blows 110 with a real gauge. Indy sr heads opened up to max wedge size, indy intake with a 1050. Number matching to the car. And they built it with stock rods! Makes me nervous. I shift at or under 6 but had it a bit higher several time 6800 or so just can't help myself. It keeps pulling. Haven't driven in the last 2 years plan is to use another block new rods and pistons maybe 14 to 1. No more 87. lol. Should be at the limit of the stock block there. And at the trans limit, Hemi 4 speed. Run it with a 3.54 gear
