Source for Quick Ratio Boxes? New/Used

MrSony

MrSony

Comic Book Super Hero
Nov 15, 2014
4,666
113
Des Moines, Iowa
What cars have a bolt in better ratio power box? Not necessarily f41 spec but better than stock. Or part number for new/reman.
 
TURNA

TURNA

Geezer
Jul 24, 2009
7,779
113
Socialist NY
Late Model 12.7:1 quick-ratio gearbox
ID markings YA, WS and HX
Line Thread Size: M18x1.5 and M16x1.5
Number of Mounting Holes: 3, (missing leg H-pattern)
Input Shaft Diameter: ¾-inch
Output Shaft Diameter: 1 ¼-inch
Number of Turns Lock to Lock: 2 ½ - 3

1984-'88 Monte Carlo/Malibu with Z65 suspension
1983-'88 Malibu, El Camino
1982-'92 Camaro except FE1 soft ride suspension
1984-'87 Regal with FE2 or FE3 sport suspension
1983-'84 Hurst/Olds
1985-'87 Cutlass with 5.0 (VIN code 9)
1982-'85 Trans Am
1986-'92 Firebird except FE1 suspension
1986-'87 Grand Prix with FE2 touring or F41 heavy duty suspension


Pre-'76 12.7:1 quick-ratio gearbox
Line Thread Size: 11/16 x 18 and 5/8 x 18
Number of Mounting Holes: 4, (H-pattern)
Input Shaft Diameter: 13/16-inch
Output Shaft Diameter: 1 ¼-inch
Number of Turns Lock to Lock: 2 ½ - 3

1967-'76 Camaro, Firebird
1970-'76 Monte Carlo/Malibu
1964-'76 Chevelle


1977-'79 12.7:1 quick-ratio gearbox
Line Thread Size: 11/16 x 18 and 5/8 x 18
Number of Mounting Holes: 3, (missing leg H-pattern)
Input Shaft Diameter: ¾-inch
Output Shaft Diameter: 1 ¼-inch
Number of Turns Lock to Lock: 2 ½- 3

1977-'79 Camaro, Firebird
1977-'79 Monte Carlo, Malibu
1977-'79 Chevelle


Jeep/S-10 14.0:1 quick ratio gearbox
Line Thread Size: M18x1.5 and M16x1.5
Number of Mounting Holes: 3, (missing leg H-pattern)
Input Shaft Diameter: ¾-inch
Output Shaft Diameter: 1 ¼-inch
Number of Turns Lock to Lock: 3 - 3 ½

1991-'92 Fleetwood
1992-'95 Grand Cherokee
1984-'93 Comanche
1984-'95 Cherokee/Wagoneer
1983-'86 Bonneville
1982-'93 2WD S-10 Blazer and pickup


Weatherhead conversion fittings
(from your local auto parts store)
Part number M41157X6X16 - AN6 male to metric 16 O-ring male
Part number M41157X6X18 AN6 male to metric 18 O-ring male
Part Number 1446 - female inverted flare thread
(5/8-18) to male 16 X 1.5 metric o-ring
Part Number 1447 - female inverted flare thread
(5/8-18) to male 18 X 1.5 metric o-ring
Part Number 1444 - 11/16-18 thread O-ring
Male to 5/8-18 female inverted thread adapter
 
street sweeper

street sweeper

Greasemonkey
Jun 12, 2017
200
63
Central Indiana
Go to a chain store or internet store like rock auto and put in one of the cars listed.

You want us to install it too?!?!?!?!?!?!
No but it gets tedious having to find gm part numbers and verify that the gm part number is in fact that of a quick ratio box, then finding a replacement part number assuming it is the correct part and there was no error in any of the listings. Because i have done the "just buy it for this vehicle!" and gotten bit in the *ss. I just figured maybe somebody had done the swap recently and could pull up an online invoice showing the part number and brand but i apologize for trying to seek redundant verification of part numbers.

Thanks for the assistance!
 
MrSony

MrSony

Comic Book Super Hero
Nov 15, 2014
4,666
113
Des Moines, Iowa
make sure the rag joint and all your steering components are in good shape, if there is play a new box won't cure that
It's gonna be part of a mass upgrading. Balljoints, bushings, tie rods, jeep shaft, etc.
 

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