rear end swap and gear change?
#1
Member
Thread Starter
Join Date: Feb 2010
Location: liverpool ny
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 firbird formula
Engine: 355ci
Transmission: t56 spec3+ cluch
Axle/Gears: 9 bolt disc brake 2.77
rear end swap and gear change?
ok so if im not mistaken the lo3 with t5 came with 3.08 rear gears and i have a 9 bolt rear end to put in it wit 2.77 and i was just wondering if the gear change would effect the speedomiter and what the speedomiter change would be if i got 3.77 rear gears for the rear end ?
#2
Supreme Member
iTrader: (5)
Join Date: Mar 2011
Location: Central Texas
Posts: 2,893
Likes: 0
Received 4 Likes
on
4 Posts
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: rear end swap and gear change?
Yes your speedometer would no longer read right, but wouldn't be REAL far off.
Best way to find out is to find one of those highway roadside trailers the cops set up to show people the speed they are going. Or to find an officer to radar you as your driving by, turn around (safely) and come back to find out what is reading was. Granted, it won't tell you how far off it is by a % to determine the gauges accuracy at all speeds, but maybe do it at 2 speeds, like 20 & 60, then you'd get an idea of its accuracy over a wider range.
Best way to find out is to find one of those highway roadside trailers the cops set up to show people the speed they are going. Or to find an officer to radar you as your driving by, turn around (safely) and come back to find out what is reading was. Granted, it won't tell you how far off it is by a % to determine the gauges accuracy at all speeds, but maybe do it at 2 speeds, like 20 & 60, then you'd get an idea of its accuracy over a wider range.
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
2
12-11-2023 08:14 AM
hectre13
Engine/Drivetrain/Suspension Parts for Sale
7
08-26-2015 08:17 AM
AkDrifted
Engine/Drivetrain/Suspension Parts for Sale
6
08-17-2015 07:45 PM
1992 Trans Am
Engine/Drivetrain/Suspension Parts for Sale
1
08-08-2015 08:16 PM