74 Booster conversion problem

[KF100TK]

I just installed a 76 brake booster in my 69 f-100 it has the flat bar with no adjustment going back to the pedal. The problem is it seems to be about 3/4" short to my brake light switch plate and i don't think there is enough adjustment in the plate. Any suggestions?

[69timemachine]

I used a '74 F100 power brake setup in my '69, and I had the same problem. The pedal actually sits a little lower now, having a little less travel than it did with the manual setup. There was nowhere near enough adjustment in the switch to make up for it.

I made a sliding brake switch adjuster out of a piece of 1/8" by 1" flat steel about 3 inches long. I bent a 1" portion to a 90-degree angle and drilled 2 holes in the long side and connected them using the jigsaw (or cutoff wheel) to make a slotted hole. Then I simply drilled one small hole in the middle of the factory bracket under the dash and bolted the new bracket on top of it using one bolt. It may be a little crude, but it's out of sight and is super easy to adjust. Only took about 20 minutes too! I attached a pic. Sorry about the poor quality; the shadow makes it look like it's not even touching, but it is. Hope this helps.

[td]

i had the same problem when i did the brake convertion. i used a large nut in place of the ones that came with the switch and it brought the switch button closer to the stop. i think you could mabe remove some material off the switch with a beanch grinder so to allow it to come thru the brkt that holds it a little further.

[KF100TK]

Great suggestions , i thought i was the only one with this problem. Now that there is less travel with your pedal how does your braking feel? I thought i might just weld a piece to extend the booster bracket if pedal works proper.

[td]

Great suggestions , i thought i was the only one with this problem. Now that there is less travel with your pedal how does your braking feel? I thought i might just weld a piece to extend the booster bracket if pedal works proper.

the pedal feels fine and your idea of welding a extension on the switch stop sounds like it would work fine .

[69timemachine]

I added a pic to my previous post. The braking feels fine, just a little more touchy with the shorter pedal throw and power brakes. When you're braking, just a dab will do you; at least in my truck. With my skinny tires, it really wants to lock them up in a panic stop. But it brakes much more precise and consistent with the power discs.