[Blued and Painted]

Back in the mid 80's Cadillac and Buick used a belt driven vacuum pump to run all the vacuum accessories including the brake booster.
http://www.cardone.com/Products/Prod....%3a%3a%3a
Has any one tried to install one on a Pontiac.
I have one unused pulley on the Jap A/C compressor.
Or perhaps installed as an idler on the A/C Belt.
Any idea's or comments are welcome.

[lust4speed]

I purchased a few new Cads in the 80's, and they had electric vacuum pumps. Sure about some being belt driven?

[Don 79 TA]

i've only heard about electric ones too
haven't seen them in person
some of the diesel cars also had them

what are you trying to accomplish? use it a crank case evac and accessory driver? or just for PB/acc?

[Blued and Painted]

Yes, it would be for the brake booster and accessories.
Not a good pic but here's one on a Cadillac 8-6-4 engines, south of the dist and under the end of the snorkel.
I thought is was a good idea back in the day. Not the 864.
I'm surprised no one has adapted one for a street application with a biggER cam.

http://www.autotraderclassics.com/sc...3739203789.jpg

[TheSilverBuick]

I have a mechanical one on the shelf right now that I pulled from a 4100HT in the junkyard.

My Firebird currently is manual brakes and steering, but if I ever run a power booster I will consider using it, though the cam makes decent vacuum, but when I go turbo, it'll just be a way to keep the brake system separate. I don't believe it'll pull the volume needed to be a good crankcase vacuum source, so is likely limited to the vacuum brake booster and HVAC, etc accessories.

I have three other cars that I've considered using it on depending on the direction of each build. My T-bird has a bazillion vacuum operated gadgets and if I build a cammed FE engine I'd use it there.

[salem1912]

I have a electric one from a newer Ford diesel. It was from the bodyshop and only had a small crack in one of the ends. I was having vacuum problems but as the engine rings break in it seems to be getting better.

[cdrookie]

i had an electric cadillac version on my car to operate the power brakes. simple and clean installation, worked pretty good.

[craigs69]

I am using a remanufactured Cardone pump #32-428 for crankcase evacuation. The pump came on early 1990's Cadillacs with the 4.5L V8. Butler Performance used to offer this pump in their street vacuum pump kits before they upgraded to the GZ vacuum pump. When driven at 55% of crankshaft speed, it generates about 1" of vacuum at 1000 RPM and 5" at about 3500 RPM. I made a new drive pulley to spin at 85% crank speed and it makes about 3" at idle and almost 9 at 4000 RPM.

I would think this could be used with a vacuum reservoir to power accessories. The pump is readily available for $65-95 online all day long.

[antique69lemans]

Originally Posted by craigs69

I am using a remanufactured Cardone pump #32-428 for crankcase evacuation. The pump came on early 1990's Cadillacs with the 4.5L V8. Butler Performance used to offer this pump in their street vacuum pump kits before they upgraded to the GZ vacuum pump. When driven at 55% of crankshaft speed, it generates about 1" of vacuum at 1000 RPM and 5" at about 3500 RPM. I made a new drive pulley to spin at 85% crank speed and it makes about 3" at idle and almost 9 at 4000 RPM.

I would think this could be used with a vacuum reservoir to power accessories. The pump is readily available for $65-95 online all day long.

I think technically that is an air pump.. while it can move a lot of air for crankcase evacuation it may not produce sufficient vacuum for brakes. Another option is from the ford diesels idi 88-93. they had a belt driven diapragm pump to run the brakes on f250 trucks (not hydroboost). It is cardone 64-1006 for reference. Grab one from the wreckers to get simple bracket and press on pulley. The gm 6.2 used the same concept but it was driven of the cam like a distributor. They don't move much volume but produce strong vacuum.

[Chris65LeMans]

I replaced my brake booster with a hydroboost system when I added power steering, and have been very happy with the results.

[Formulajones]

Ford Mustangs had electric vacuum pumps throughout most of the mod motor years (94 and up). Very easy to find in the scrap yard. My father uses one from a mustang on his 69 goat for several years now to supply vacuum to the power brakes, works great. Hidden up inside the front fender you don't even know it's there until you turn the key on. Once the engine fires you can't here the pump running.

I do believe eventually he'll go hydroboost when time allows. That's what I'm doing as well.