Holley HP1000 has no vacuum ports, how do I vent engine? [Archive]

Johnny Angel

11-19-2006, 02:12 PM

Just bought a Holley HP1000, and noticed that there are no vacuum ports on the carb. How do I vent the engine? I am going to run the SP1 and was going to use a breather in one valve cover, and the pcv in the back, to the carb. I am using the chrome Buick valve covers, from a 70' GS 455. Can I cut a hole in the passenger valve cover, and add another breather? Is this enough? Is there a way to run the pcv? Could I rig up a hose on my open air cleaner and connect it to the pcv in the back of the manifold? The motor will be putting out over 500hp. I am a bit confused. A happy Thanksgiving to all.

Regards, John. :Do No:

TORQUED455

11-19-2006, 03:26 PM

I run a Holley 1000 HP and SP1. The SP1 has a port in the rear, just below the carb mount flange, that you can use for PCV vacuum. I use 1 breather in each valve cover. All is good.

Johnny Angel

11-19-2006, 03:36 PM

I run a Holley 1000 HP and SP1. The SP1 has a port in the rear, just below the carb mount flange, that you can use for PCV vacuum. I use 1 breather in each valve cover. All is good.

Bob, are you saying that your carb has no vacuum ports as well? I think you are saying that their is a port that I can tap into on the manifold, that is above the crank case pcv hole in the back? If so, do you tap into that port and then connect it to the pcv in the lower back? I do not have an SP1 in my hands, only the carb as of yet. Would it be asking too much to provide a picture? Sorry for being so thick. Thanks for responding. Have a great Thanksgiving.

Regards, John. :beer

WE1

11-19-2006, 04:33 PM

John,

You can also just use a 1" spacer and drill and tap for a nipple to connect the PCV to manifold vacuum. But installing a nipple in the manifold just below the carb flange would do the same thing if height is an issue.
I used a spacer on my SP2 under my Dom. as height wasn't a concern.

Johnny Angel

11-19-2006, 06:11 PM

O.k. Dave, I understand now. Can't thank you enough, and It looks like I have multiple options. I am using stock hood, so clearance could be a concern. Looks like I will tap the SP1 if there is no provision, plus one less gasket to leak if I do.

Regards, John. :TU:

TORQUED455

11-20-2006, 10:10 PM

John, I took some pictures, but we have new software and are having trouble getting them enhanced and sized. When my wife figures it out, I'll put them up.

There is a threaded port just below the carb mount flange in the rear. It points toward the rear, which is convenient. I used a threaded hose barb and a short length of reinforced (fuel injection) rubber hose to go to the PCV valve. Real simple once you see the manifold. HTH's!

Johnny Angel

11-21-2006, 08:05 AM

Thanks Bob. Whenever you get the pictures would be fine. I appreciate it! Have a great Thanksgiving.

Regards, John. :)

TORQUED455

01-01-2007, 07:36 PM

For some reason, I can't post the pictures correctly. :Do No:

http://i34.photobucket.com/albums/d149/cobalt226/eng3-1.jpg

http://i34.photobucket.com/albums/d149/cobalt226/eng2.jpg

http://i34.photobucket.com/albums/d149/cobalt226/eng1.jpg

BuickBuddy

01-01-2007, 08:29 PM

I just posted my install of a 4150 HP 1000cfm with pics. (http://viragotech.com/buickthunder/forum/integramod/viewtopic.php?p=2722)

Johnny Angel

01-06-2007, 10:03 AM

Many thanks to Bob and David for their great pictures! they have given me a lot of help, and many ideas. thanks again guys for making the effort.

Regards, John. :TU:

Johnny Angel

01-06-2007, 10:15 AM

I just posted my install of a 4150 HP 1000cfm with pics. (http://viragotech.com/buickthunder/forum/integramod/viewtopic.php?p=2722)

David, have you put in your fuel filters yet? Do they go into the two bowl ports? I was thinking of moving the heater hose from the front of the manifold, to the back. Than putting an in line filter, about where the original heater hose would be. Do yo have any part numbers for the filters you are using and their locations? Thanks for the great pictures, the rusty gears in my head are turning.

Regards, John. :TU:

BuickBuddy

01-06-2007, 10:41 AM

Johnny Angel

01-06-2007, 11:56 AM

Not yet John.. I have been lucky and everytime a do a jet change there has been no dirt in the bowls. But my luck could run out. :pp

I am going to get the Holley filters at Summit (http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY%2D162%2D500&N=700+4294844943+400178+115&autoview=sku) :TU:

Thanks again David, is there anything else I need to buy to adapt these filters, if I go that way? Like bowl fitting extentions? Thanks for the help.

Regards, John. :)

BuickBuddy

01-06-2007, 12:03 PM

I don't think you need anything else. I took the bowl adapters off and it looks like those filters fit right inside them. :TU:

Got to go now.. I'm bringing the car down to my Brothers shop to change the rear gear (http://viragotech.com/buickthunder/forum/integramod/viewtopic.php?t=606). It's 60 and sunny here in New England. :ball: :ball:

I'm crying because I sell heating oil for a living. :Dou:

Johnny Angel

01-06-2007, 04:08 PM

Thanks David, I should be able to figure it out from here. Thanks again for your help. It has been very warm here this winter as well. Lots of rain and not much snow. Good luck with your gear swap.

Regards, John. :TU:

staged67gspwr

01-20-2007, 10:25 AM

Guys either i didnt read right or im dumb,there is no port on the rear of the carb for the pcv hook up t the manifold on a 1000 hp Holley?

BuickBuddy

01-20-2007, 10:27 AM

Guys either i didnt read right or im dumb,there is no port on the rear of the carb for the pcv hook up t the manifold on a 1000 hp Holley?

George there are no ports at all on the Holley 4150 carb. :TU:

staged67gspwr

01-20-2007, 10:29 AM

George there are no ports at all on the Holley 4150 carb. :TU:

oh that sucks!!wtf kinda s_it is that?i guess that changes my mind on getting one,how about the AED 1000 do those have a port for the pcv atleast?

Thanks

Johnny Angel

01-20-2007, 07:36 PM

George, look at the pictures in this post, buy Torqued 455. Follow the links as well. You will find some options. You can either run a spacer, with a tapped hole for the pcv hose, or the T/A SP-1 has a port in the back, already tapped, for this purpose. P.M. me if you want to discuss it futher. I am going to run the T/A Sp-1, and will use their tapped port in the back of the carb pad.

Regards, John.:TU:

staged67gspwr

01-20-2007, 07:39 PM

George, look at the pictures in this post, or the other one I started. Follow the links. You will find some options. You can either run a spacer, with a tapped hole for the pcv hose, or the T/A SP-1 has a port in the back, already tapped, for this purpose. P.M. me if you want to discuss it futher. I am going to run the T/A Sp-1, and will use their tapped port in the back of the carb pad.

Regards, John.:TU:

Man i tell you John,i`ve taken my manifold on and off a few times as well as carbs i swear i dont recall seeing a port on mine i`m gonna have to go check that out.

Thanks

DaWildcat

01-20-2007, 08:27 PM

George, you may be right...I have an older SP1 and don't remember seeing one either.

Devon

staged67gspwr

01-20-2007, 08:36 PM

George, you may be right...I have an older SP1 and don't remember seeing one either.

Devon

Mine is an older one too.:Dou:

Thanks

Johnny Angel

01-21-2007, 09:52 AM

staged67gspwr

01-21-2007, 09:57 AM

I do not have one in front of me, but that is what I was led to believe. My motor is being built. I could call the builder and check. (Mine would be a brand new one.) You could always tap a spacer, or tap the back of the top of the plenum, lots of options in those pictures. Good luck.

Regards, John.

Funny thing is that there is a AED 1000 HO carb on ebay brand new and i asked the seller if there are any ports on the carb and this was his response.

"Hi,
Thank you for your interest.
if you mean vacuum ports, yes it uses the std. Holley baseplate. "

Mike B.
bptcarbs

So are there ports or is the guy making a mistake?:Do No:

Thanks

DaWildcat

01-21-2007, 10:08 AM

The only way to know for sure:

http://www.aedperformance.com/Contact%20Us.htm

Devon

staged67gspwr

01-21-2007, 11:08 AM

The only way to know for sure:

http://www.aedperformance.com/Contact%20Us.htm

Devon

Thats what i just did,stay tuned.

Thanks

staged67gspwr

01-21-2007, 06:31 PM

Bingo!!Just got a reply back from AED this is what he wrote back regaurding if there are any ports on the 1000 HO.

"Hi George
Yes there's a 3/8 tube in the back & also a small tube for straight manifld vacuum (for vacuum advance etc.). So you are covered. Let me know if we can be of any help.

Take Care

John Dickey
AED Performance"

I guess we`re in business:beer

Thanks:TU:

Stage1 Jeff

01-28-2007, 09:08 PM

I checked My SP1, it has the plug in the rear of the base.
would this be a better place for the PCV hose to go to?

WE1

01-29-2007, 04:34 AM

Jeff:

Either place is the same. Full manifold vacuum. The large 3/8" port in the base of the carb is below the throttle blades so its full time vacuum too.

Stage1 Jeff

01-29-2007, 09:21 AM

ok, thanks, was just curious :)

I HATE MY HOLLEY!!!!!!!

buick jones

04-13-2007, 02:54 PM

Help me out guys. I'm trying to use the port at the rear of the carb base in my SP1 manifold for the PCV valve vacuum.

The instruction sheet says the port is 1/4-18 thread, but no way a 1/4-18 hose nipple will fit.

I tried a 7/16-14 bolt and that fits, so I'm thinking that maybe I got an odball intake somehow.

Can anyone confirm that the hose nipple they are using at this port is a 1/4-18?

Thanks.