My Power Disk Brakes are frustrating me...

johnnymac2k6 said
i have a 50 year old craftsman timing light, and it works with MSD boxes just fine...you're not trying to set it with a vac advance hooked up are you?

you need around 10-12 at idle, and then it should advance to around 32-36 fully advanced. thats with the vac advance unhooked, and all ports plugged on the carb. If your distributor only has a mechanical advance, then get it to idle, and see what it goes to when advanced. on street cars i go with the numbers above, on my race car, i lock it out at 36 with no advance and leave it. but those are two very different animals.

you have some odd things going on in your combination...the single plane intake, and the "high lift" mysery cam aren't doing you any favors on a driver.

Let me borrow your light! LOL Yeah, I thought about buying another but I wanted to check the return policy before I went that route.

I have an Edelbrock Air-Gap in waiting to be installed. I just need to order the gaskets and bypass hose inlet. The dual plane should help. Not sure if it will help with vacuum, but hopefully help the drivability.

BRAKE UPDATE

Since many have suggested to ditch the Power Booster, I'm going to do just that. Seems like it will make life easier.

Today, I called Doctor Diff and ordered his Aluminum Master Cylinder kit with the adapter. I also ordered an adjustable manual push rod and master cylinder brake lines.

I ordered the 1 1/32" bore master cylinder because supposedly that's what "standard" for disc brakes according to Doctor Diff. I was afraid that the 15/16" would have too much travel. I hope I made the right choice. It's tough to make when you really don't know the difference.

I actually met a guy in Dana Point, CA (bought a 4 speed transmission from him, more on that some other thread) over the weekend and he had the Doctor Diff setup on his Duster, which was a very nice '74 Duster. I wish I took a picture.

I plan to put it all in this weekend. I'll document as I go.