regal1991gs Posted April 12, 2018 Report Share Posted April 12, 2018 My car- a 91 regal gs coupe transmission with 220k bit the dust last month. I was about to give it away to the junk yard but decided to get a used 4t60 and put it in. When I searched car-part.com for used transmissions for 1991 they only are giving me the 1991 year. Was 91 an odd year? I did find a 1992 regal gs transmission with 115k for 120 dollars but for some reason it does not interchange on car-part. I thought 91 and 92 were the same. Please help? Thanks Quote Link to comment Share on other sites More sharing options...
Nas Escobar Posted May 12, 2018 Report Share Posted May 12, 2018 Somewhere along the line, the trans became electronically operated instead of vacuum operated. Hence the name change from 4T60 to 4T60E Quote Link to comment Share on other sites More sharing options...
ManicMechanic Posted May 12, 2018 Report Share Posted May 12, 2018 Here's the interchange: I'm guessing it's a 3.8 being a GS though the GS was available with the 3.1. Consult a trans shop to make sure of these. These are from the Hollander Interchange which is what the junkyards use. Q ---------- REGAL 90-91 A.T.; 6-231 (3.8L) 4 spd AT, T.H.440, 4T60, ME9 WARNING-When changing final drive ratio, include corresponding prom for ECM and change governor as necessary (or speedometer could be inaccurate). |A| thru |U| fit as shown in notes. Q ----------- 5 Hole 4 Pin torque converter connector. Shift shaft is 7mm longer than previous years. |F| thru |H| & |M| fit, if equipped with the bosses & holes needed to mount the upper bracket, by transferring valve body wiring, switches & electrical connector. |N| & |P| fit by transferring valve body wiring, switches & electrical connector as needed. F ---------- 6000 88-89 A.T.; TH440 BONNEVILLE 88 A.T., FWD; engine VIN (8th digit) "3" CELEBRITY 88-89 A.T.; TH440 CENTURY 88-90 A.T.; TH440 CIERA 88-90 A.T.; TH440 EIGHTY EIGHT 88 A.T., FWD; engine VIN (8th digit) "3" ELECTRA 88 A.T., FWD; engine VIN (8th digit) "3" LESABRE 88 A.T., FWD; engine VIN (8th digit) "3" NINETY EIGHT 88 A.T., FWD; engine VIN (8th digit) "3" (Canada) PARK AVENUE 88 A.T., FWD; engine VIN (8th digit) "3" RIVIERA 87 A.T. TORONADO 87 A.T. G ---------- 6000 90-91 A.T.; TH440 BONNEVILLE 88 A.T., FWD; engine VIN (8th digit) "C" BONNEVILLE 89-91 A.T., FWD CELEBRITY 90 A.T.; TH440 EIGHTY EIGHT 88 A.T., FWD; engine VIN (8th digit) "C" EIGHTY EIGHT 89-91 A.T., FWD ELECTRA 88 A.T., FWD; engine VIN (8th digit) "C" ELECTRA 89-90 A.T., FWD LESABRE 88 A.T., FWD; engine VIN (8th digit) "C" LESABRE 89-91 A.T., FWD NINETY EIGHT 88 A.T., FWD; engine VIN (8th digit) "C" NINETY EIGHT 89-90 A.T., FWD PARK AVENUE 88 A.T., FWD; engine VIN (8th digit) "C" PARK AVENUE 89-90 A.T., FWD REATTA 88-90 A.T. RIVIERA 88-90 A.T. TORONADO 88-90 A.T. H ---------- CENTURY 91-93 A.T.; TH440 CIERA 91-93 A.T.; TH440 M ---------- DEVILLE 88-90 A.T., FWD ELDORADO 88-90 A.T. FLEETWOOD 88-90 A.T., FWD SEVILLE 88-90 A.T. N ---------- CUTLASS 88 A.T.; TH440 (FWD) CUTLASS 89 A.T.; (TH440), 6-173 (2.8L) GRAND PRIX 88 A.T. GRAND PRIX 89 A.T.; 6-173 (2.8L) REGAL 88 A.T. REGAL 89 A.T.; 6-173 (2.8L) P ---------- CUTLASS 89 A.T.; (TH440), 6-191 (3.1L) CUTLASS 90 A.T.; TH440 (4T60) CUTLASS 91 A.T.; TH440 (4T60, 3.1L) CUTLASS 92 A.T.; TH440 (4T60) GRAND PRIX 89-90 A.T.; 6-191 (3.1L) GRAND PRIX 91 A.T.; TH440 (4T60, 3.1L) GRAND PRIX 92 A.T.; TH440 (4T60) LUMINA CAR 90 A.T.; TH440 (4T60) LUMINA CAR 91-92 A.T.; TH440 (4T60, 3.1L) REGAL 89-91 A.T.; 6-191 (3.1L) REGAL 92 A.T. Quote Link to comment Share on other sites More sharing options...
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