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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

Key Specs

Proportioning Valve TypeFixed
Port Quantity3-Port
Material TypeBrass
FinishNatural
ColorNatural

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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 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 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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Specs


Specifications

KEY SPECS
MFG. Part #91031351
BrandSpeedway Motors
Proportioning Valve TypeFixed
Port Quantity3-Port
Material TypeBrass
FinishNatural
ColorNatural
GENERAL
Brake System TypeDisc/Drum
Proportioning Valve LocationLeft Mount
Thread Pitch3/8"-24 IFF | 9/16"-18 IFF
Outlet FittingBottom front/Top front are 3/8"-24 IFF (to font brakes), Rearmost port is 9/16"-18 IFF (to rear brakes).
Pressure Safety Switch IncludedYes
Overall Length5.15"
Overall Width1.08"
Overall Height1.95"
Overall Thickness1.08"
Centerline of Holes2.68"
NotesIncludes 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 QuantityEach