Gear Ratio ???

[ECU PIRATE]

Originally Posted by C-10 simplex

For 81, The 6 cylinders got 2.73 as std axle ratio. GQ1


The 8's got 2.56 GQ1


Unless it's a california truck; In that case 6 cylinders got 3.08 as the std axle ratio code GQ1 and 8's got 2.73.

i went thru this dilema yrs ago when i first got my truck.

Also, if you bring your vin# to any decent gm dealer they can type it in and tell you exactly what gear ratio came with the truck originally.

Good to know. I guess for an 82' model year, the rear end ratio would be the same? What would be your recommendations for a lowered 82' (4/6 drop) with a 350 and a Muncie M20 4 spd. tranny?