BigRich954RR

iTrader: (1)

Ok engine is making 800RWHP though IRS and is spinning a F1C procharger so im guessing its making maybe 1000hp at the crank ?

When should i just rebuild this before i have any issues to keep from anything major failing ?

It is built on a Warhawk block with a 4.125 x 4 inch stroke. What should be replaced? what should be checked? a guess of what it might cost to have work done ?

The Fugitive

iTrader: (6)

that's hard to say because everyone drives differently and faults happen randomly. Me personally I would get the oil checked (send a sample in) every 12k or so to see what kind of metal if any I have in there. Plus having a oil pressure gauge would help (if there is a drop in pressure or high rise)

Bob@BruteSpeed

iTrader: (16)

Provided you don't go wide open throttle before the engine temps stabilize, which is very hard on these engines, (and the sleeves don't drop in that Warhawk block), I would expect the engine to last many years. 800 rwhp isn't stressing a well built LS engine. If you are seeing more blow-by than you use to, and oil consumption is becoming a problem, then the rings may be getting worn. Cylinder head valvesprings are one of the first items to wear out with a forced induction engine, and if the engine has several seasons on it, they would be the first thing I would replace. Bob