Speedo ratio adapter??
Thread Starter
|
1st Gear
Joined: Feb 2022
Posts: 1
Likes: 0
From: Rochester, NY
Speedo ratio adapter??
Hey guys, I have a non working speedo on my 84 F-250, 460w/auto trans. While looking for replacement cables I can get with or without ratio adapters. It has cruise control. Where do I find the ratio adapter on my truck, if I have one?
Moderator
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
As far as I know, ratio adapters are little aftermarket gearboxes to fudge how the speedo reads.
The original cruise control used a short speedo cable that came out into the engine compartment. Usually it ended up somewhere underneath the brake booster area. Screwed into the end of this short speedo cable was a signal generator that sent a speed signal to the cruise control brain box. Then another speedo cable screwed into the other side of the signal generator and that continued on underneath the floorboard, along the driver's side frame rail and went into the trans or the transfer case where the gears are to spin the cable.
You should find replacement cables for trucks with cruise are shorter than ones without cruise.
The original cruise control used a short speedo cable that came out into the engine compartment. Usually it ended up somewhere underneath the brake booster area. Screwed into the end of this short speedo cable was a signal generator that sent a speed signal to the cruise control brain box. Then another speedo cable screwed into the other side of the signal generator and that continued on underneath the floorboard, along the driver's side frame rail and went into the trans or the transfer case where the gears are to spin the cable.
You should find replacement cables for trucks with cruise are shorter than ones without cruise.
Thread
Thread Starter
Forum
Replies
Last Post
ericconn
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
2
Jun 28, 2013 11:26 AM
John90
Clutch, Transmission, Differential, Axle & Transfer Case
3
Jan 29, 2012 03:42 PM
pootscratch89
1948 - 1956 F1, F100 & Larger F-Series Trucks
1
Sep 5, 2005 07:46 PM
thesprocket26
Clutch, Transmission, Differential, Axle & Transfer Case
1
Jan 5, 2005 06:18 PM
