#1  
Old 03-07-2026, 09:05 AM
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HWYSTR455 HWYSTR455 is offline
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List the part numbers of the belts.

List the part numbers of the pulleys.

Take a couple pics of either side of the pulleys on the engine.

We are flying blind trying to help because you are not providing enough info to diagnose.


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Old 03-07-2026, 07:45 PM
Schurkey Schurkey is offline
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Quote:
Originally Posted by 73ta View Post
Get a belt tensioning tool, sometimes called a cricket. I can guarantee you that what you think is a properly tensioned belt isn't when checked with the tool! Ask me how I know.
Krikit, not "cricket". Simple, easy, inexpensive. Requires a bit of "feel" at the finger-press point, so that the gauge does not rock towards the indicator lever. Has to stay firmly towards the pocket-clip end. But once you have the knack, it's supremely easy to work with.

Multiple sources for the same product. Sometimes with different-color molded plastic parts (Yellow, blue, black, "morning sickness green", perhaps others.)

Example: KR1 for V-belts


I got mine from NAPA about thirty years ago.
KR1 = V-belts <50 to 150 pounds tension.
https://www.napaonline.com/en/p/NBHKR1

KR2 = Serpentine/multi-rib belts. 100--300 pounds tension.
https://www.napaonline.com/en/p/NBHKR2


For the record, NAPA's pricing is insane. Amazon has 'em for about half of what NAPA wants.

Continental (Goodyear) has a third version, for belts that require 300--700 pounds of tension. Not something I deal with.
http://www.amazon.com/Continental-El...WPW/ref=sr_1_8

Quote:
Originally Posted by HWYSTR455 View Post
Take a couple pics of either side of the pulleys on the engine.
It's still gonna be difficult for us to verify pulley alignment. Pulleys need to be aligned in three dimensions.
Top--Bottom of the driven pulley
Left--Right of the driven pulley
Forward/Rearward compared to the drive (usually the crankshaft) pulley.

All measurements are in relation to the crankshaft pulley. The tolerance I use is 1/8 inch for nearly all automotive applications.


Last edited by Schurkey; 03-07-2026 at 07:53 PM.
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  #3  
Old 03-08-2026, 01:53 PM
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HWYSTR455 HWYSTR455 is offline
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Yeah I wasn't too concerned about pulley alignment when requesting pics, was more so wanting an overall view to see if there were any glaring issues/concerns.

Like, we could get a bird's eye view of the belts, determine series, fan and accessory setup, etc.


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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be
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