C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Serpentine Belt Length Needed

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Old Jun 29, 2007 | 10:34 AM
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Default Serpentine Belt Length Needed

Just installed an ATI Super Damper (917274) on a 388 LT1.
The damper is 7.530" diameter, which is larger than the stock 96 LT1 pulley, so I need a slightly longer belt.

Has anyone run a damper/pulley of that diameter and can recommend the length I need?

I could trial and error this, but what a PIA that could turn out to be.

Thanks,

Jake
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Old Jun 29, 2007 | 10:51 AM
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worse comes to worse, couldn't you run a string around the pulleys then measure?
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Old Jun 29, 2007 | 11:26 AM
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Originally Posted by billybonesmusic
worse comes to worse, couldn't you run a string around the pulleys then measure?
Yep, I could do that if no one knows what I need.

Thanks,

Jake
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Old Jun 29, 2007 | 11:34 AM
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use a sewing tape (material), run it around, then go match the size to the belt, easiest way to do it...
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Old Jul 2, 2007 | 12:09 PM
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I started with the stock length belt measurement, 67", and bought one that was 1" longer (68") but the fit was slightly too tight.

So I went up another 1/2" to 68-1/2" and it worked fine. That's what's on the engine now.

I was going to use the tape/string method but couldn't figure out how to factor in the tensioner's effect on belt length.

Thanks for the help.

Jake
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Old Jul 2, 2007 | 12:21 PM
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Originally Posted by JAKE
I was going to use the tape/string method but couldn't figure out how to factor in the tensioner's effect on belt length.

Thanks for the help.

Jake


For future reference ==> Anyone who has done it..how do you account for the tensioner? Have someone hold it at midpoint? Hold it full pressure on it? Go straight through it, essentially ignoring it?
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