This is a ‘71 Cutlass 8.5 that I own. ID’ed by Jim Mitschke at JD race. Looks close, if not identical.
Another good identifier is to look at u-joint retention. 8.2 usually have u bolts holding them in, the 8.5 have straps.
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71' GTO -original 400/4-speed/3.23 posi
13.95 @ 102.1 on street tires @ 4055lbs.
‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears.
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