LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Which Pulley??

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Old 02-21-2006, 09:17 PM
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Default Which Pulley??

Someone posted this question in another forum:
*
confused which underdrive pulley is the best? I hear piggyback's aren't worth it but ASP sells a 34% Underdrive which sounds like it should make a difference over a 25% like March.

Are all underdrive pulleys "piggybacks"

By piggyback they mean you retain the stock pulley NOT replace it right?

Are all the underdrive pulleys the same design?

the 23% on ASP's site says it is good for .2 in the quarter over the .1 to .15 for the 34% so I am confused I would think that the 34% would be better than the 23%. I just want the best pulley and dont care about charging.

http://www.aspracing.com*

I am curious about this as well. anyone know?
Old 03-10-2006, 11:32 PM
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I have a 34% installed. The Factory Crank Pulley bolts over the Underdrive Pulley. You still need that balancer. Some companies make them so they are heavy enough to be a balancer, but they are more expensive. With an Underdrive Pulley, get a shorter Serpentine belt, a 60" belt is what I needed. Factory is 64".
Old 04-11-2006, 03:18 PM
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Originally Posted by the_merv
I have a 34% installed. The Factory Crank Pulley bolts over the Underdrive Pulley. You still need that balancer. Some companies make them so they are heavy enough to be a balancer, but they are more expensive. With an Underdrive Pulley, get a shorter Serpentine belt, a 60" belt is what I needed. Factory is 64".
quick question do you know how to get it of or anybody? i have that setup and NEED to remove it and im having a problem. The harmonic balancer on another Lt1 just kinda fell off we used a puller but not much force(4 or 5)rotations) and it seems that this one isnt even budging at 4 turns????????
Old 04-11-2006, 03:44 PM
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as for the pullies, i got em and didnt notice a difference at all except my voltage jumps around more, but that is to be expected
Old 04-11-2006, 04:53 PM
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Originally Posted by imnotplutonium
as for the pullies, i got em and didnt notice a difference at all except my voltage jumps around more, but that is to be expected
no im talking having a rpoblem removing it i understand everything that comes with it and thats why i want to remove it~!!!!!!!!!!!!!!!
Old 04-11-2006, 05:00 PM
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Originally Posted by jade93lt1
no im talking having a rpoblem removing it i understand everything that comes with it and thats why i want to remove it~!!!!!!!!!!!!!!!
i was referring to the original ?
Old 04-11-2006, 07:57 PM
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Originally Posted by imnotplutonium
i was referring to the original ?
oooh sorry man
Old 04-11-2006, 08:39 PM
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Originally Posted by jade93lt1
quick question do you know how to get it of or anybody? i have that setup and NEED to remove it and im having a problem. The harmonic balancer on another Lt1 just kinda fell off we used a puller but not much force(4 or 5)rotations) and it seems that this one isnt even budging at 4 turns????????
the harmonic balancer isnt coming off or is the underdrive pulley not coming off?
Old 04-12-2006, 07:21 AM
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Originally Posted by Captainofiron
the harmonic balancer isnt coming off or is the underdrive pulley not coming off?
neiother of them????? i didnt wrench on them to hard though only like four turns on the three jaw puller on the out side of the balancer



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