Chevy LT4 small block is a torque monster
The crate engine is $16,819 MSRP and should offer it as an option in Chevy trucks since it has tons of low end torque. specs
Forum Discussion
8.1Van wrote:
It would have about 600 ft lbs tq highway speed in OD with a 3.73 rear and 31.5" tire like the LT265/75R-16 with much left over for passing and climbing. At high altitude it would not lose as much power as a non supercharged engine. I bet it could be modified for truck (LT4HD ?)use to lower the high rpm HP but keep the low end torque. The 8.1 has 450 ft lbs tq @3200rpm vs LT4 having over 600 ft lb tq @3200rpm or 450 @1000rpm.
Basically an Ecoboostish V8, only supercharged rather than turbocharged. Torque and hp specs would no doubt have to be rolled back to be able to stand up to a HD pickup duty cycle. 450 hp/550 torque would be pretty doable I would think with an iron block. Towing mileage would be horrendous but you could go about as fast as you want. Still would be hard to compete with modern diesels that go over 400/900 with much better towing fuel mileage and good longevity.
