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Old Aug 30, 2016 | 08:53 PM
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From: JunkYard
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Originally Posted by Kodiak2314
Ok thanks so the 99 would work? And whould the different crank work?
The 12457705 should work just fine.
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Old Aug 30, 2016 | 09:19 PM
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How to identify vortec truck engine
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Old Aug 30, 2016 | 09:49 PM
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That's useless info in that link as it's not all correct.

There is no difference in crank length on the 5.3L. Only the early 4.8L and 6.0L had the longer rear snout.
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Old Aug 30, 2016 | 10:07 PM
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Says the computer is different and fuel ratio? So you would by it it's 400 dollars cheaper?
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Old Aug 30, 2016 | 10:09 PM
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How does the 2001 produce 15 more horsepower over the 99?
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Old Aug 30, 2016 | 10:10 PM
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Originally Posted by Kodiak2314
Says the computer is different and fuel ratio? So you would by it it's 400 dollars cheaper?
In this case, the computer only maters to the vehicle not the engine.

Yes, I would buy the 400 dollar cheaper engine if i needed one.
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Old Aug 30, 2016 | 10:10 PM
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Originally Posted by Kodiak2314
How does the 2001 produce 15 more horsepower over the 99?
The tune.
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Old Aug 30, 2016 | 10:15 PM
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Yeah I need on it has 300,000 on it now? Anymore opinions probably be purchasing it tomorrow.
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Old Aug 31, 2016 | 06:18 AM
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300,000.... Perfect ring gap for nitrous or a turbo. Pop a cam in that thing and a gasket and seal kit, and run the **** out of it... then turbo It for $3000 and make 700 horse. Don't let the miles scare you.
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Old Sep 7, 2016 | 07:05 AM
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Guys will I have to upgrade my torque converter I'm going with 212/218 low lift and Lt headers? Thanks
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