Anybody swapped in an LS1?

[Roper]

Originally Posted by Russell

Its not just for the speedometer, the speed sensor is an extremely important sensor to the PCM, without it, the engine will not run correctly without getting the chip changed, and even then, it'll have problems with stalling out under deceleration, with emissions controls, fan controls, and the highway mode function.

A cummins diesel is a fantastic engine, but they are very heavy, and are pretty tough to shoe-horn into these trucks, there is a lot of suspension work etc that needs to be done so the truck handles properly. 6.2 / 6.5L diesels are great for getting good mileage, but without spending a fair bit of money on one, they can be real slugs.

The new LSx engines, esspecially the lower displacement 4.8Ls and 5.3Ls get excellent mileage, similar to what a 6.2L gets if geared properly, and driven nicely, with way more power available if needed

Man that electronic stuff sounds like something im happy that my truck doesnt have<grin>
Hey yesterday a friend of mine showed me his new<to him> truck. Its an 85 2 wheel drive with a 6.2. Its got a banks turbo on it. I took it for a test drive. It was way better than I thought it would be. I would guess it was about the same as a stock 350<220 hp>?.Apparently the turbo doesnt hurt the mileage on those 6.2s.
Those 6.2s seem to be cheap to buy as well. Plus no electronics. Just a direct bolt in job.
What about the 6.5 chevy diesel. How much trouble to put one of those in a pre 88 chev?