[Zombi]

I rebuilt the 6.2 in my K5 Blazer. It's a bored 6.2L short block, with 6.5TD heads, a 6.5TD injection pump, non-egr intake, and a much improved cooling system (6.5 water pump, twin t-stat crossover). It also has the Banks Sidewinder turbo and exhaust system on it.

The truck is an 83 K5 Blazer, D60 front, 700-r4, 14 bolt FF rear, 37" swampers, I had it on a scale and it weighs in at 6500 lbs with me in it.

My advice: Stay away from the 6.2. The blocks break, even at stock power levels. The cranks break at stock power levels. ALL the heads have cracks in them. They don't make much power without a turbo, and they blow the head gaskets when you put one on. Yeah, I get up to 20 MPG, but that's probably because I had to turn the fuel way down to keep the EGTs under control at WOT.

To put it in perspective: My 6.2 makes respectable power, for a 6.2. Not too long ago I was following my dad (stock 97 F250 powerstroke). We both stopped at the bottom of a long hill and then took off. I had the pedal floored and he still quickly pulled away from me and wasn't even trying. The kicker was that he was pulling a car on a trailer and I wasn't towing anything.

I'll run this 6.2 until it explodes, then I'll look into a 6BT swap.