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#1
09-29-2023, 06:08 PM
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Crank Pulley for '71 80AMP ALT Set Up
When looking at the Assembly Manual (Sheet C60-5.2, Sheet 2) they list two different part numbers for Engine Crank Pulley ( [2} - as shown in pic).
481037 -PULLEY D/C60. C61 481038 -PULLEY W/C60. C61 What does the "D" and the "W" stand for and the numbers after that? Thanks  [/URL]
Last edited by hiyabradHO; 09-29-2023 at 06:49 PM. |
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#2
09-29-2023, 07:47 PM
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The 'W' is With, the 'D' I think is Delete, but basically without C60/C61 (without AC).
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#3
09-29-2023, 09:15 PM
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481037 was the '71+ non AC 2 groove crank pulley.
Being a '71 up AC equip car, your '71 will take the 481038 wp pulley. 80 amp alt was only avail with AC & heated rear glass. Eventually, that stagger 8" diam crank pulley changed slighty. THerea a 1000xxxs numbered crank pulley, know have several of that latter pulley from '80 turbo engines.
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Buzzards gotta eat... same as worms. |
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#4
09-29-2023, 11:39 PM
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Thank you both!
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#5
10-03-2023, 02:45 AM
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Yes, C60 = air conditioning and C61 = standard heater.
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#6
10-03-2023, 08:04 PM
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Quote:
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#7
10-03-2023, 08:05 PM
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Question: Why is it when I see the part listed it has a YB at the end of the part number: GM Part # 481038YB
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#8
10-03-2023, 08:29 PM
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The YA (481037) and YB (481038) are the pick codes so the assembly person didn't have to memorize the whole number.
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So long, farewell. |
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