dc2x4drvr

71 442,A/C,MT,W-37,TN engine code. Is "OD" the correct decal?

Jamesbo

I beleive it's OK, I think OD is for non AC cars. Better wait for an expert

wmachine

http://www.drdecal.com/

v8al

I know 8 year old thread.
Curious was there ever a definitive answer to the emission decal for 71 442, A/C, MT?
I agree with above that the two choices are either OD or OK.

ignachuck

Al, this virus and sheltering in place stuff is taking a toll on all of us, You do know it's 2020 now, not 2018?

Cosmic Charlie

https://www.supercarsunlimited.com/items.aspx?nid=38

71 Emission Sticker
1971 350 4bbl AT or MT (OB)
01-042 6.95

71 Emission Sticker
1971 455 2bbl AT Cutlass SX (OF)
01-048 6.95

71 Emission Sticker
1971 4-4-2 AT (w/o AC), all MT (OD)
01-044 6.95

71 Emission Sticker
1971 4-4-2 AT with air cond. (OK)
01-050 6.95

71 Emission Sticker
1971 4-4-2 W-30 AT (w/o AC), all MT (OE)
01-046 6.95

71 Emission Sticker
1971 4-4-2 W-30 AT with air cond. (OL)
01-052 6.95

https://www.thepartsplaceinc.com/dat...%20Decoder.pdf

v8al

Based on the text "all MT" I could see the OD code being correct.
I'd really like someone with some additional Oldsmobile documentation to chime in on which one is correct.

joe_padavano

I'm going to concur with the OD sticker for all non-W MT 442s in 1971. I just spent some time scanning through the 1971 Engine Assembly Manual. There are two engine codes for the 71 MT cars, TU and TA. There is no differentiation between A/C and non-A/C engines, and the only difference between TU and TA engines is the clutch disk - TU engines were configured with a clutch for 3 spd manual transmissions and TA engines got a clutch disk for the four speed. Spark plugs, timing, carb, etc are all the same, so the same emissions decal.