can anyone tell me the way I need to run vacuum to the egr and to the vacuum advance? the 460 is out of a 78 Lincoln and had all kinds of vacuum hose running threw thermo switches, check valves, air condition, lights.....
if I need to use a thermo switch for the egr or advancer can you recommend a new one to use.

thanks.

 

Here's a diagram for the '78 truck 460.

 

thank you. you wouldn't have a part number for the vcv going to the egr would you?

 

It's a ported vacuum switch - you can find them readily available aftermarket. You want a 2-port PVS that will only open up once the engine is above a certain temperature - I don't know about the 460 in particular, but Ford often used ~ 100°F switches to control EGR.

 

On the calibration shown, apparently the EGR and canister purge were controlled by separate PVSes at different temperatures (what temperatures isn't shown on the diagram)... I've also seen it where they're both controlled by the same PVS and tee off after that.

 

Looks like two possibilities
D3TZ-9D473-A or D3OZ-9D473-A

 

thanks bkual and mike. I knew what it it was just not the temp. Il see if the one on my 400 is the same part number later.

 

Just so you know, the number you'll find on the switch is not the part number, that's what Ford calls an engineering number. It can be crossed over to the actual part number
Post the number you find and I'll see what it crosses over to.

 

the number is very hard to read but I think it is d3ve-aa. I tried google but get flooded with cylinder heads.

 

Yeah, there are cylinder heads that have a D3VE casting number.
The number you posted, D3VE-AA, doesn't show in my list but that doesn't mean you're not correct. These lists are notorious for having missing numbers and numerous other errors.

 

ok thanks for looking. il just use it any way. it cant be to much of a difference in temp and its better then none at all.