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#91031351
GM Disc/Drum Proportioning Valve for 1/2-20, 9/16-18 Outlets
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- This non-adjustable proportioning valve is similar to 70's GM valves and provide OEM appearance
- This block incorporates metering for front brakes and proportioning for rear brakes into one unit
- For use with disc front and drum rear brake systems
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Product Summary
Universal Fit, Disc/Drum Brake System Type, Brass
- This non-adjustable proportioning valve is similar to 70's GM valves and provide OEM appearance
- This block incorporates metering for front brakes and proportioning for rear brakes into one unit
- For use with disc front and drum rear brake systems
- Hard lines are included to connect to a master cylinder with 1/2"-20 and 9/16"-18 outlets
- Two 3/8"-24 IFF outlets for the front brakes and one 9/16"-18 IFF outlet for the rear brakes
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Key Specs
| Proportioning Valve Type | Fixed |
| Port Quantity | 3-Port |
| Material Type | Brass |
| Finish | Natural |
| Color | Natural |
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Speedway Motors 91031351 Details
These proportioning valves are similar to what GM used on many cars in the 70s. They are non-adjustable and may require an adjustable valve in the rear brakes (if needed). Block incorporates metering (for front brakes) and proportioning (for rear brakes) into one unit. For use with front disc, rear drum brake systems.
Includes hard lines to connect to a master cylinder with 1/2"-20 and 9/16"-18 outlets.
Item Details
For M/C with 1/2"-20 and 9/16"-18 outlets.
Bottom Front Port: 3/8 "-24 IFF threads - goes to one front brakeTop Front Port: 3/8 "-24 IFF threads - goes to one front brake
Middle Top Port: 1/2 "-20 IFF threads - comes from master cylinder
Rear Top Port: 7/16 "-24 IFF threads - comes from the master cylinder
Rear Most Port: 9/16 "-18 IFF threads - goes to rear brakesBottom Front Port: 3/8 "-24 IFF threads - goes to one front brake
Top Front Port: 3/8 "-24 IFF threads - goes to one front brake
Middle Top Port: 1/2 "-20 IFF threads - comes from master cylinder
Rear Top Port: 7/16 "-24 IFF threads - comes from the master cylinder
Rear Most Port: 9/16 "-18 IFF threads - goes to rear brakes
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Speedway Motors 91031351 Specifications
Speedway Motors 91031351 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031351 |
| Brand | Speedway Motors |
| Proportioning Valve Type | Fixed |
| Port Quantity | 3-Port |
| Material Type | Brass |
| Finish | Natural |
| Color | Natural |
| GENERAL | |
| Brake System Type | Disc/Drum |
| Proportioning Valve Location | Left Mount |
| Thread Pitch | 3/8"-24 IFF | 9/16"-18 IFF |
| Outlet Fitting | Bottom front/Top front are 3/8"-24 IFF (to font brakes), Rearmost port is 9/16"-18 IFF (to rear brakes). |
| Pressure Safety Switch Included | Yes |
| Overall Length | 5.15" |
| Overall Width | 1.08" |
| Overall Height | 1.95" |
| Overall Thickness | 1.08" |
| Centerline of Holes | 2.68" |
| Notes | Includes hard lines with fittings, hardware, and bracket. This is a combo valve (metering for front/proportioning for rear) into one valve. Residual valves NOT built in. |
| Sold in Quantity | Each |