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#91031358
Adjustable Proportioning Blocks With Brake Light Switch
- This adjustable proportioning block serves several purposes which dramatically reduces the amount of fittings needed and reduces the potential for leaks
- Dual front brake line outlets eliminates the need for a T fitting for the front brakes
- Built in pressure switch allows you to conveniently operate your brake lights
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$119.99
/each
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Product Summary
Universal Fit, Disc/Drum Brake System Type, Aluminum
- This adjustable proportioning block serves several purposes which dramatically reduces the amount of fittings needed and reduces the potential for leaks
- Dual front brake line outlets eliminates the need for a T fitting for the front brakes
- Built in pressure switch allows you to conveniently operate your brake lights
- 3/8"-24 inverted flare female inlets and outlets allow the use of common 3/16" brake lines for a quick nand easy installation
- Five stainless steel 3/8"-24 flare nuts and a wiring pigtail for the brake light switch are included making this a value that can't be beat
Key Specs
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 4-Port |
| Material Type | Aluminum |
| Finish | Select Finish |
| Color | Select Finish |
Need To Know
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Details
This adjustable proportioning block allows you to run lines from the master cylinder to the block and then to the appropriate wheels. What is neat about it is that it also contains the proportioning valve and brake light switch. This dramatically reduces the amount of fittings needed and potential leaks.
The adjustable proportioning valve regulates rear brake pressure, helping to maintain correct brake bias between front and rear brakes. It is designed for dual bowl master cylinders. The distribution block connects to the master cylinder and distributes brake fluid to all four wheels. An easy to turn handle with directional arrows makes it simple to either increase or decrease rear brake pressure.
The block accepts 3/16" brake lines and the inlets and outlets on this unit are 3/8"-24 inverted flare females. It has two inlets from the master cylinder, two outlets to the front brakes and one outlet to the rear brakes. It includes five stainless steel 3/16" fittings and wiring pigtail for rear brake light switch. Mounts to any convenient location. This is not a direct factory replacement for original blocks. Some line modifications may be necessary.
Learn more about how adjustable proportioning valves work by reading our tech article. Brake System Selection.
Charts
910-31358 Instructions (PDF)
Guides & Documents
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Finish to see |
| Brand | Speedway Motors |
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 4-Port |
| Material Type | Aluminum |
| Finish | Select Finish to see |
| Color | Select Finish to see |
| GENERAL | |
| Brake System Type | Disc/Drum |
| Proportioning Valve Location | Frame Mount |
| Thread Pitch | 3/8"-24 IFF |
| Pressure Safety Switch Included | Yes |
| Overall Length | 4.00" |
| Overall Width | 1.00" |
| Overall Height | 1.75" |
| Notes | Select Finish to see |
| Sold in Quantity | Each |
Ratings & Reviews
4.5
68 Reviews
Based on the reviews, customers are generally satisfied with the product's quality and functionality. They laud its straightforward installation, compact design, adjustability, and compatibility with both disc and drum brake systems across a range of vehicle models. However, some encountered issues with leaking pressure switch. Despite that, many found it to be a valuable addition to custom or vintage vehicles, applauding its advantage in regulating brake pressure over the competitors. Most customers recommend the product for its performance, convenience, and affordability.
Ratings & Reviews
4.5
68 Reviews
Based on the reviews, customers are generally satisfied with the product's quality and functionality. They laud its straightforward installation, compact design, adjustability, and compatibility with both disc and drum brake systems across a range of vehicle models. However, some encountered issues with leaking pressure switch. Despite that, many found it to be a valuable addition to custom or vintage vehicles, applauding its advantage in regulating brake pressure over the competitors. Most customers recommend the product for its performance, convenience, and affordability.
4.5
68 reviews
5
52
4
6
3
4
2
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1
4
Most Liked Positive Review
4.0
Great product!
A nice little all-in-one proportioning valve block. Has a great finish(I went with black) and mounting holes. I made a mounting bracket out of diamond plate aluminum. My only complaint, and it's not that serious, is having to remove the stop light switch to connect the "In" line from the rear brake chamber. I didn't want to remove it.
Most Liked Negative Review
1.0
Adjustable Block with Brake light switch...
When I first saw this switch online I thought just what I need at a good price. The install was OK but while using good fittings, I have had a leak at almost every outlet including the brake switch. I had to remove the whole block after it was installed because of all the leaks. That thing couldn't hold fluid under pressure without leaking in almost every outlet. In examining the block, I believe the machining just is not up to spec. I had to dangerously over torque each fitting just to get it to stop leaking. I'm still dealing with at least 1-2 more slight leaks. I cant torque the fittings anymore as I worry about stripping the aluminum. I'm not sure what is best. I received the block and let it sit on the shelf a while before the install since I'm completing a restore on my Dodge A100. I don't think I would be eligible for an exchange or upgrade. I see the pic in this ad shows it with CPP markings. The one I received has no markings. I'm not sure if they sent me a different brand or it's still CPP just not marked. If anyone from Speedway reads these reviews, please advise. The item is installed but the vehicle not driven as I still have not been able to stop the leaks.
Filter by Ratings
Very nice looking produc6
5.0
15 days ago
Gene Barrette
Cedar Rapids Iowa
Verified
Very nice looking product
Would Recommend
Great product!
4.0
3 months ago
Jaymon74
Small town, Indiana
Verified
A nice little all-in-one proportioning valve block. Has a great finish(I went with black) and mounting holes. I made a mounting bracket out of diamond plate aluminum. My only complaint, and it's not that serious, is having to remove the stop light switch to connect the "In" line from the rear brake chamber. I didn't want to remove it.
Would Recommend
I would buy this part again.
5.0
10 months ago
Cy
Ga
Verified
Used on a 1951 ford panel truck.
Would Recommend
Yes
5.0
11 months ago
Dan
Bristol conuty
Verified
Great part for my car
Would Recommend
Proportioning valve
5.0
12 months ago
Oldschool2
TN
Verified
Purchased for my Roadster, haven't used it yet. Looking to be of good quality.
Would Recommend
Yes
5.0
a year ago
Wen
Martinsville Ind.
All good
Would Recommend
just what I needed
5.0
2 years ago
Doc
Morris county, NJ
Verified
direct fit but haven't tried it yet, no instructions
Would Recommend
I would buy this product again.
5.0
2 years ago
Cobra S
Kyle, Tx
Verified
Great for adjusting Disc/Drum bias.
Would Recommend
I would buy again
5.0
3 years ago
Kevin
Texas
Verified
Great part to install brake system from scratch. Easy to mount and to connect brake line's. Has several options for connecting front brake lines.
Would Recommend
A+
5.0
3 years ago
LZ
FLORIDA
Verified
A+
Showing 10 of 68 reviews