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L36 belts and pulley help

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Old 08-16-2018, 07:19 PM
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Duckstu
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Default L36 belts and pulley help

Hey everyone

Have a 69 L36 with just alternator. (Had smog)

So 2 fan belts.

1. That goes from crank to water pump with no tensioner...... A 15320 in Dayco and other brands,.. an 7320 in a Gates. Is that correct?

2. That goes from crank, water pump and alternator. Dayco 55345,... not sure of Gates number

Are those right?


Also,.. my 2 grove crank pulley has a slight wobble. Would like a used one in good condition. Not restored,.. just something that looks appropriate for a well maintained 50,000 mile car.

Thanks in advance for any help.

Also,.. should harmonic dampener be painted? Over-spray? Black?

Last edited by Duckstu; 08-16-2018 at 07:20 PM.
Old 08-16-2018, 08:23 PM
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ed427vette
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I can't help with belt numbers but I'm pretty sure every 427 in 69 came with the 3 groove pulley regardless of wether or not all grooves were used. Also I think power steering used/shared a pulley.
Old 08-16-2018, 08:44 PM
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Mooser
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My 72 LS5 (should be the same?) 3 groove wp pulley, two groove crank pulley
Crank WP Belt 15315, 11A0800 Dayco TopCog

I've got power steering so the alt belt is totally different
M
Old 08-16-2018, 11:49 PM
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Duckstu
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Originally Posted by ed427vette
I can't help with belt numbers but I'm pretty sure every 427 in 69 came with the 3 groove pulley regardless of wether or not all grooves were used. Also I think power steering used/shared a pulley.
3 groove crank pulley if the car originally had A/C,..... 2 groove if it didn't.

The water pump pulley was 3 (third one for the Smog pump).

So I have 2 on crank, and 3 on W/P,.. the front most one not being in use.

Last edited by Duckstu; 08-16-2018 at 11:53 PM.
Old 08-16-2018, 11:53 PM
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Duckstu
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Originally Posted by Mooser
My 72 LS5 (should be the same?) 3 groove wp pulley, two groove crank pulley
Crank WP Belt 15315, 11A0800 Dayco TopCog

I've got power steering so the alt belt is totally different
M
Mine has a Dayco 15320 from W/P to crank. Slightly loose,.. but wasn't sure if that was because the belt was slightly too long,.. or just old and worn. It seemed to be sitting a tiny bit lower in the groove that I'd think is correct,.. so I had suspected worn.

Top-cog belts just look wrong to me (and are of course),.. so I was hoping to at least get something like a smooth Gates or Goodyear in there. Perhaps if I'm patient enough,. even spring for the repo GM ones.

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