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Topic: rear end gear question (Read 1017 times) previous topic - next topic

rear end gear question

what gear ratio in the rear end can in a 84 xr7?
84 el camino ss-daily driver(efi mild sbc,2004r, posi 3:42 rear.)
84 mercury cougar v6- was a v6/ nitrous drag car, going back to mostly stock
81 chevy malibu-protouring/  drag car.( efi sbc supercharged 283 that will rev to the moon, 2004r, 4:11 posi rear)

rear end gear question

Reply #1 –
3.45:1

7.5 diff, Trac-Loc (or an Auburn)

Narrow (Mustang-width) rear housing with the SN-95 length axles.
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon

rear end gear question

Reply #2 –
what spline is the xr7's axles and auburn diff- is it 28 spline or 31 spline?
84 el camino ss-daily driver(efi mild sbc,2004r, posi 3:42 rear.)
84 mercury cougar v6- was a v6/ nitrous drag car, going back to mostly stock
81 chevy malibu-protouring/  drag car.( efi sbc supercharged 283 that will rev to the moon, 2004r, 4:11 posi rear)
 

rear end gear question

Reply #3 –
28
1979 Ford Fairmont
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5.0L/4R70W/8.8"/5-lug/3" Exhuast