Sbc belt diagram

Sbc belt diagram DEFAULT

What is the proper routing of the 3 v-belts on a SBC

goathearder said:

Ok, here are some pictures. Taking a look at it last night I am thinking this:

Inner crank groove > inner PS groove
Middle crank groove> Outer PS groove > AC groove> Inner WP groove
Outer crank groove > Outer WP groove > Alt groove

I guess the real question is for the middle crank groove, should the belt run over the WP too or should I just leave the WP out?

Click to expand...

I am sure the first one is what I had
The second one I think is that way, but you have to see if it will clear if you skip the WP and if you include it if you have enough belt on the pulleys.
The third one is the obvious one it's right.
Having 2 belts on one accessory will prevent squeling except if it's on the crank and doesn't have enough contact.
Also these 3 belt setups with dual belts per accessory are tricky for adjusting them, you need to figure out whcih comes first so when you tighten the last one you are make the others tighter not looser.
Happened to me once.

 

Sours: https://ck5.com/forums/threads/what-is-the-proper-routing-of-the-3-v-belts-on-a-sbc.297555/

Thread: SBC Pulley and belt routing help needed - take a look (pics)
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STANDARD FACTORY APPLICATIONS
Using corresponding long water pump crankshaft and water pump pulleys, the most common pulley arrangement for long water pump is to run a two groove water pump pulley, a three groove crankshaft pulley, and a two groove (V-8) power steering pump pulley. This pulley arrangement will be used in all Alan Grove long water pump bracket applications, however; in CASE 2 applications, the alternator and A.C. belts will be swapped due to belt clearance.
PLEASE READ THE FOLLOWING INFORMATION.
If using Alan Grove Bracket Part Number: 101R, 101L, 119L, 137L, 201L, 201R, 214L or 215R; these brackets will follow CASE 1 - belt alignment diagram. (directly to the left of this paragraph) This arrangement is how 1980 and up factory long water pump applications were routed. In this case, Alan Grove Brackets 101L, 119L, 137L and 219R; can be used with all factory alternator mounts, as they were mounted on the passenger side. The power steering belt on these applications will run in the inner groove of a two groove power steering pump pulley. If using part numbers 119L, 137L or using a 1980 and up factory compressor mount with factory compressor, the A.C. compressor belt will touch in the outer groove of a two groove power steering pump pulley. Factory steel pulleys are available from Chevrolet or from us. NOTE: All Alan Grove Brackets are designed for the AFTER MARKET SANDEN compressor. While these compressors are
equipped with two groove clutch pulleys, only the OUTER GROOVE will be used.

Sours: https://www.hotrodhotline.com/md/html/sbc_belt.php
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SBC Complete Pulley, Alternator Bracket \u0026 Power Steering Pump Installation (SWP)

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