what will happen??
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Supreme Member
iTrader: (3)
Joined: May 2004
Posts: 2,233
Likes: 4
From: stockton, CA
Car: Camaro RS/SS
Engine: 5.7 LS1
Transmission: 4L60E Transgo shift kit, 3500 stall
Axle/Gears: 4th Gen Rear 3:42
what will happen??
im planing on getting my rear end gear ratio changed to 3.73!! do i have to calibrate my speedo right away, if not will my transmisson shift early or later. or will it even get affected. its an 89 camaro 305 tbi with a auto 700r4 trans. thanks guys
(Im just worried about my shifting. not my speed.
)
(Im just worried about my shifting. not my speed.
) 
Your speedo will be out of whack by a lot though... but it shouldn't effect your tranny. 
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Your speedo will be off about 37% 3.73/2.73=1.366. So if your speedo reads 60mph your really on going 43 mph. To do 60mph your speedo will need to read 82mph.
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RedLeader289
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May 28, 2019 01:47 PM
