help with vacuum hose routing...

[tracterman2]

I'm going to try this one again...surely someone can help me with my vacuum hoses...a diagram or a picture...my sticker is gone and I would rather not do the trail and error thing...I have a stock 307 and a powerglide...the truck is a none a/c truck and doesn't have power brakes or power steering...it is a custom 10...if anyone cold help it would be greatly appreciated...I did add an HEI for realiablity sake the other day...fixing to put the carb back on, that is the 2 barrel by the way...going to put on all new lines...so I just need to know where they go...any help would be awsome...thanks.

[dave2953]

I had/have the exact same motor/trans/carb. If you mean PCV, vac. advance, etc. I can help some. I routed PCV from the port at the rear base of the carb. Vac. advance goes to the line that is on the pass. side of just above the base. (circled) I ran my trans. modulator line to the port in between the carb and dizzy. Here is a pic for reference, and I hope this helps you out.

[tracterman2]

yeah that helps...there are a few more lines I need to know about...I have a small modulator on the left side of the engine with two lines coming out of it...I have no idea what this does...I checked the FAQ section...surely someone has the emissions diagrams on here somewhere...that would be a good FAQ to put together...the diagrams for each year and engine trans configuration...I know there are alot of them...but that would be a good resource for the ones that are trying to fix up old trucks that have lost everything off of them... thanks for your help....I know the pcv and dizzy advance are the most important...we'll see what happens..I'm still hoping for that diagram though...lol

[JimKshortstep4x4]

My 71 Service Manual has a different Emissions Diagram from your 70. Your 70 had the TCS setup on it and my diagram does not show the TCS. You need someone with a 70 manual to look it up.

Jim