help
Thread Starter
Joined: Jul 2001
Posts: 529
Likes: 0
From: Richardson, TX
Car: 85 Iroc
Engine: 305 LB9
Transmission: 700r4
Axle/Gears: 3.27
help
did the t-56 swap in my 87 gta.
now the damn speedo is all over the place and adds miles on by the second. I pulled the plug out and am running with no speedo now.
any idea?
i thought 87 was first year of non-analog for t/a
now the damn speedo is all over the place and adds miles on by the second. I pulled the plug out and am running with no speedo now.
any idea?
i thought 87 was first year of non-analog for t/a
Supreme Member
Joined: Mar 2002
Posts: 4,812
Likes: 0
From: 62656
Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
sounds like gear ratio of the speedo gears in the tranny are for a different axle ratio, youll need to re calibrate them by swappin in correct ratio gears.