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boost + ls1

Old May 25, 2006 | 08:15 PM
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Default boost + ls1

do you think a stock bottom end ls1 can hold about 630-650rwhp, with 10 degree of timing and high 10 A/Fs?
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Old May 25, 2006 | 09:38 PM
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I think it'll do it just fine as long as you have enough fuel.

I'm at 514 rwhp through an auto (more like 540 through a 6-speed) and the car is VERY driveable on pump gas and the stock pulley. I don't see why it wouldn't take a smaller pulley and race gas

Mike
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Old May 26, 2006 | 08:05 AM
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I may be wrong, but the stock bottom end of an LS1 was only designed to handle 475 to 500 rwhp and be able to last. Anything above that range and you can guarantee a premature failure. Throw in the boost element and who knows. I would love to see something from the GM engineers saying what the capacity for there LS1 block is. What will the bearings and etc etc stand up to before they fail.
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Old May 26, 2006 | 08:19 AM
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Originally Posted by allngn_c5
I may be wrong, but the stock bottom end of an LS1 was only designed to handle 475 to 500 rwhp and be able to last. Anything above that range and you can guarantee a premature failure. Throw in the boost element and who knows. I would love to see something from the GM engineers saying what the capacity for there LS1 block is. What will the bearings and etc etc stand up to before they fail.

This blower setup has been on this car for 3 years @ 514rwhp through the auto. The only thing that smokes is the tires.
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Old May 26, 2006 | 09:17 AM
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yes, You are in the range, he's talking about 600 + to the wheel. How many miles do you drive your car a year? I put 6 or 7,000 miles a year on my car April to November.
I have 3500+ miles on the heads, 11000 on the cam and valvetrain upgrades, and just over 39000 on the original. So let me know where you are in 20,000 miles from now. I just hope I don't have any issues with block failure in the next 20,000. I am hopeful to get 125,000 miles out of this car under the current situation. I want to drive it a long time. Unless I come into some money and do the boosted 408.
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