Source for Quick Ratio Boxes? New/Used

pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
24,619
10,035
113
Kitchener, Ontario
#21
I have a 87 IROC box in mine with Jeep shaft. Makes a huge difference but turning radius does suffer
there is an adjustment you can use to shorten the turning radius, when you are making a tight or u-turn quickly press down the pedal under your right foot.....:)
 
Cutlass400hp1986

Cutlass400hp1986

Greasemonkey
Jan 6, 2019
113
161
43
Oaks, Pennsylvania
#22
there is an adjustment you can use to shorten the turning radius, when you are making a tight or u-turn quickly press down the pedal under your right foot.....:)
Haha!! Your right! Stupid me! I’ll try it and report back on how it does!
 
O

oldsmobile joe

G-Body Guru
Nov 12, 2015
959
1,044
93
mpls
#23
i prefer the iroc boxes my self. all my cars run them. why you ask?

first, they have one of the smallest pitman arm swings of that steering box generation. irocs have a 64 degrees of swing, regular f-body gears are 70 degrees.
by running the smaller swing, i have no or less issues with front tires rubbing the fender or fender liner at max turns.

second, by having all my cars running them, the steering is more consistent for me when i jump from one to another. yes i do loose some turning radius, but i compensate by swinging a little wider and turning a little earlier. you don't notice it once you get used to it.

i buy all mine used, mostly u-pull yard finds, and craigslist. all have worked fine and no leaks. maybe I'm just lucky.

here are a couple of links with more info.
https://www.chevelles.com/techref/shea_3.html
https://www.chevelles.com/techref/pdf/1983-96saginaw800fastratiogears.pdf
https://www.chevelles.com/techref/pdf/1992-98grandcherokeefastratiostrggear01ja2013.pdf

i measure the pitman arm degree swing before purchase by using the angle meter app on my phone. slick set up.
 
roger1

roger1

Master Mechanic
Aug 23, 2010
354
379
63
San Angelo, TX
#24
Ribbedroof

Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
2,676
2,361
113
Wellston, OK
#25
Here's where I got mine

proxy.php?image=https%3A%2F%2Fimagizer.imageshack.com%2Fv2%2F800x600q90%2F924%2FiHioua.jpg&hash=682e4981301667ebc326a315fadfbf54


Sorry, couldn't resist. Might have been the most usable part of the car
 
ssn696

ssn696

Comic Book Super Hero
Supporting Member
Jul 19, 2009
3,545
2,377
113
New Mexico
#28
there is an adjustment you can use to shorten the turning radius, when you are making a tight or u-turn quickly press down the pedal under your right foot.....:)
Of course, there is the Jim Rockford one-point U-turn from reverse...
 
melloelky

melloelky

Royal Smart Person
Oct 22, 2017
1,004
1,538
113
mass
#29
mike's montes usually has a few used ss boxes on hand.
 
airboatgreg

airboatgreg

Royal Smart Person
Oct 2, 2016
1,509
1,390
113
#30
I checked at O Reills and they carry it. Couple hundred bucks as I recall
 
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