[joem1021]

upon closer inspection the metering blocks were switched. There are mixture screws in one metering block but there missing from the other but it is drilled out. I ordered new mixture screws this morning and will install. I checked the rest of the numbers on the front and it reads 4777-13. i dont know if that helps at all. I hooked a few of the vacuum lines up yesterday. I've got a line from a vent in the drivers side valve cover that I'm not sure where to run. I'm assuming that it needs a full vacuum conection.

["QUICK-SILVER"]

Originally Posted by joem1021

upon closer inspection the metering blocks were switched. There are mixture screws in one metering block but there missing from the other but it is drilled out. I ordered new mixture screws this morning and will install. I checked the rest of the numbers on the front and it reads 4777-13. i dont know if that helps at all. I hooked a few of the vacuum lines up yesterday. I've got a line from a vent in the drivers side valve cover that I'm not sure where to run. I'm assuming that it needs a full vacuum conection.

4777 confirms it's a 650, can't find anything specific on -13.
The holes for mixture screws are in most rear metering blocks, the very bottom of the hole usually doesn't go all the way through. Blow through it and make sure it is a metering block for four corner idle, before you try to put a mixture screw in, it may just be a normal rear metering block that "looks like" it should have mixture screws.

PCV is a crankcase vent valve, 3/8 hose should fit, it does get full vacuum.
Go back to post 4 about concerns with PCV and power brakes.