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What does a complete LS7 motor cost if you wanted to drop it in something?
Last I checked it was wound $20k or so just for the engine. Someone offered one for $16k on ebay. (auction is still up there).
To do a swap it would be another $10k for parts and labor.
I did a calculation and came up that mods for LS2 are MUCH cheaper in the long run. Keep in mind, the LS7 can't be modified like the LS2. This months corvette performance magazine (calloway article) mentioned that you can actually get more horses from LS2 than LS7.
For the new SS, GM is putting a blower on a LS3 not the LS7. The LS7's thinner cylinder walls won't hold the extra pressure. Looks like GM already found this out.
For the new SS, GM is putting a blower on a LS3 not the LS7. The LS7's thinner cylinder walls won't hold the extra pressure. Looks like GM already found this out.
Thinner cylinder walls not holding the pressure? I've seen plenty of built up LS7s , turboed, blown, high comp, nitrous ... all kinds of stuff pushing ridiculous horsepower. Never seen a problem caused by this rumored "thinner cylinder walls." Seen plenty of wiped out bearings and blown pistons from operator error, but never saw a failure strictly caused by a block failure.
Steel sleeves in an alum block. What is going to fail? Show me a blow through between two cylinders and I'll believe the rumor.
I think a piston or headgasket would fail far before you'd have a block failure. I've seen piston pieces shoot out the tail pipes on nitrous dyno pulls and the block was fine. Way too much nitrous and way too much timing. Just needed a rehone and rebuild of the motor, but the block was fine. If the block survived that, I can't imagine the load it would take to grenade the block.
Thinner cylinder walls not holding the pressure? I've seen plenty of built up LS7s , turboed, blown, high comp, nitrous ... all kinds of stuff pushing ridiculous horsepower. Never seen a problem caused by this rumored "thinner cylinder walls." Seen plenty of wiped out bearings and blown pistons from operator error, but never saw a failure strictly caused by a block failure.
Steel sleeves in an alum block. What is going to fail? Show me a blow through between two cylinders and I'll believe the rumor.
I think a piston or headgasket would fail far before you'd have a block failure. I've seen piston pieces shoot out the tail pipes on nitrous dyno pulls and the block was fine. Way too much nitrous and way too much timing. Just needed a rehone and rebuild of the motor, but the block was fine. If the block survived that, I can't imagine the load it would take to grenade the block.
Will meet or beat any competitors price. GM Parts House is your first and last stop for searching for your GM Parts. Not only that, it's the home of the Corvette specialist!
02-28-2007, 10:41 AM
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