Final Drive Ratio- Trans: The final drive ( is whats in the differential) gear ratio.
Final Drive Ratio- Gear Ratio: ( "IMO" is your overall gear ratio from tq conv to wheels)
I dont know if that clears it up its still real muddy to me...
little help from an admin maybe?
2002 Pontaic Sunfire 4 Door 2.2 Ecotec
15.9best 1/4 @ 87mph (I/H/E)
2005 Silverado 2500HD 2WD LLY, Amsoil in the motor, 4" MBRP DP back, 4-6" tip, EGR Blocker plate, small HP Tune, boost and pyro gauge. PPE shim kit.
14.8 best 1/4 @ 91 MPH
@ aprox 68*
why would those be different? allisons don't have a chain drive like the FWD 4T60E where the sprocket ratio changes the FDR. axle (diff) ratio = FDR. don't get that.
the 2nd parameter (trans) is in the TCM segment. the ECM segment always reads 3.72 or 3.73. i don't know what meaning is attached to the 4.10 (trans) bc i think most LB7 trucks came with 3.73 and every LB7/ally5 file i have has trans ratio = 4.10.
Hmmm... Differance from 4x4 hi and lo?
Ellis
Speed Secrets
95 Z28 18* LTx
95 Z28 LSx converion
03 CCSB 4x4 D/A
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