Where to get vacume off 250 i-6

[BCOWANWHEELS]

I,AM WANTING to put power brakes on my 70 c-10, it has a 250 I-6 engine and I don't know where the factory connected the vacume line to the booster. could somebody tell or better yet post some pictures of there setup ?
thanks
bob

[geezer#99]

Should be a plugged port right below the carb on the intake plenum for that.

[EARNHARDT#3]

Originally Posted by geezer#99

Should be a plugged port right below the carb on the intake plenum for that.

Yup. Soak it with PB Blaster or your favorite penetrant for a day beforehand. Get a 1/4" NPT barb for the hose to connect to.

[BCOWANWHEELS]

I think I know the one your referring to. on mine its in the manifold between carb base and valve cover side of intake correct ? thanks fellas. one last thing is the master cylinder cardone #10-1511 for manuel brakes the same m/c as power brakes ?

[geezer#99]

Originally Posted by BCOWANWHEELS

I think I know the one your referring to. on mine its in the manifold between carb base and valve cover side of intake correct ? thanks fellas. one last thing is the master cylinder cardone #10-1511 for manuel brakes the same m/c as power brakes ?

That's the port for the pcv.
You want the one on the outside below the carb.

[BCOWANWHEELS]

oh, I,ll look asap for it then,thanks

[BCOWANWHEELS]

found it guys. bet this is gonna be a bugger to get out ! also looks like a 90 or 45 degree barb fitting will be needed. are the booster and m/c different for 71 & up trucks compared to 1970 drum brake trucks ?

[bill3rail]

Originally Posted by BCOWANWHEELS

I,AM WANTING to put power brakes on my 70 c-10, it has a 250 I-6 engine and I don't know where the factory connected the vacume line to the booster. could somebody tell or better yet post some pictures of there setup ?
thanks
bob

Thanks for asking this question, I just received the complete kit for Power front Disc for my 70 C10 250 I6.

Now, I need to get out the rust penetrant and soak that up.
I have already soaked the front end with penetrant, which hopefully makes it easier to remove most hardware.

Bill

[geezer#99]

Originally Posted by BCOWANWHEELS

found it guys. bet this is gonna be a bugger to get out ! also looks like a 90 or 45 degree barb fitting will be needed. are the booster and m/c different for 71 & up trucks compared to 1970 drum brake trucks ?

Most of those plugs have been in there since the beginning of time, so usually besides some strong liquid wrench you'll need some localized heat.
A little propane torch should work.
Don't get lazy and think you can tee into the pcv line. The booster needs it's own vac source.
If you need a factory looking fitting to hook your vac line to, look here.
https://www.paragoncorvette.com/c-22...aspx?pagenum=1

[EARNHARDT#3]

Originally Posted by BCOWANWHEELS

found it guys. bet this is gonna be a bugger to get out ! also looks like a 90 or 45 degree barb fitting will be needed. are the booster and m/c different for 71 & up trucks compared to 1970 drum brake trucks ?

Mine wasn't hard to get out. Sprayed PB on it for a few days and it threaded right out. Used a straight barb...a 90 might've worked too but I didn't feel it was necessary.

[EARNHARDT#3]

Also, if you want the correct air cleaner for power brakes this is what you're looking for.

[BCOWANWHEELS]

wow, I,d like one of those air cleaners for sure . believe it or not ny 70 has a touch over 19 k miles on it. still has priginal spare tire and exhaust. know of anybody who has one of the air cleaner assys for sale ?
thanks bob

[BCOWANWHEELS]

well I looked at my 70 and the plug for vac isn't even corroded plus I looked thru my 250 engines and found the original vac line fitting,lucky me I recon. but while looking at the engine in my truck there definatly isn't room for a brake booster with the air filter mounted on top of the carb so now I,ve got to hunt down a p/b air filter. my engine has a Rochester mono jet carb.