[C2] 66 Differential Code AN
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Burning Brakes
Joined: Oct 2006
Posts: 1,089
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From: Native Californian CALIFORNIA
Army
66 Differential Code AM
Here are the codes for 1966.
Can someone explain to me the difference in the "AM" "Manual Transmission" description as the other ratios have 4-Speed notations.
CodeRatioTypeAK3.36:1Standard Manual Transmission or Powerglide (327)
AL 3.08:1Positraction 4-Speed (327)
AM 3.36:1Positraction Manual Transmission (327)
AN 3.55:1Positraction 4-Speed (327)
AO 3.70:1Positraction 4-Speed (327)
AP 4.11:1Positraction 4-Speed (327)
AQ 4.56:1Positraction 4-Speed (327)
*AR 3.08:1Standard Wide-Ratio 4-Speed (327)
*AS 3.70:1Standard Close-Ratio 4-Speed (327)
AT 3.08:1Positraction 4-Speed (396/427)
AU 3.36:1Positraction 4-Speed (396/427)
AZ 3.55:1Positraction 4-Speed (396/427)
FA 3.70:1Positraction 4-Speed (396/427)
FB 4.11:1Positraction 4-Speed (396/427)
FC 4.56:1Positraction 4-Speed (396/427)
Note: All 1965-67 Corvette rear axles were manufactured at Warren and are suffixed “W”. Listed 1967 “AQ” and “AR” codes & ratios may only have been used early in the 1967 model-year, or not at all.
Can someone explain to me the difference in the "AM" "Manual Transmission" description as the other ratios have 4-Speed notations.
CodeRatioTypeAK3.36:1Standard Manual Transmission or Powerglide (327)
AL 3.08:1Positraction 4-Speed (327)
AM 3.36:1Positraction Manual Transmission (327)
AN 3.55:1Positraction 4-Speed (327)
AO 3.70:1Positraction 4-Speed (327)
AP 4.11:1Positraction 4-Speed (327)
AQ 4.56:1Positraction 4-Speed (327)
*AR 3.08:1Standard Wide-Ratio 4-Speed (327)
*AS 3.70:1Standard Close-Ratio 4-Speed (327)
AT 3.08:1Positraction 4-Speed (396/427)
AU 3.36:1Positraction 4-Speed (396/427)
AZ 3.55:1Positraction 4-Speed (396/427)
FA 3.70:1Positraction 4-Speed (396/427)
FB 4.11:1Positraction 4-Speed (396/427)
FC 4.56:1Positraction 4-Speed (396/427)
Note: All 1965-67 Corvette rear axles were manufactured at Warren and are suffixed “W”. Listed 1967 “AQ” and “AR” codes & ratios may only have been used early in the 1967 model-year, or not at all.
Last edited by SoCalErv; Dec 30, 2018 at 05:59 PM. Reason: Correction
Race Director
Joined: Apr 2005
Posts: 11,252
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From: Bowling Green, Kentucky
Larry
EDIT: If only 4-speed is shown, 3 speed and auto trans cars could not obtain it as a factory approved option. But $$$$ also talks, and perhaps a special order could be done. Maybe.
Last edited by Powershift; Dec 29, 2018 at 12:06 PM.
