Which electric vacuum pump?

[mobileaudio25]

my motor is only producing around 7" of vacuum at idle. I'm looking to add an electric vacuum pump to fix this.

What pumps are you guys running?

Jegs has their pump on sale $200
Summits version is $260

Summit has a lot more reviews with great ratings and then jegs pump has a couple of rating, which are decent.

Which pump would you guys go with?
https://m.summitracing.com/parts/sum-760152
http://www.jegs.com/i/JEGS+Performa...4&cadevice=m&gclid=CNnkypj3gtECFZU1aQodEgIAaQ

 

[Injectedcutty]

I don't know anything about "assing" an electric pump lol! But obviously yall know my pick. It cost a little more but i feel its been more than worth it, especially how well my brakes work after adding the summit pump which is actually made by CVR.

 

[mobileaudio25]

I don't know anything about "assing" an electric pump lol! But obviously yall know my pick. It cost a little more but i feel its been more than worth it, especially how well my brakes work after adding the summit pump which is actually made by CVR.

Hahaha original post fixed. Yeah I was up in the air about the two. The CVR pump does have great reviews as well as the summit brand.
As far as jegs goes, it looks like the comp cams vacuum pump and theirs does not have the best of reviews.

Leaning towards the summit pump. How was installation and wiring? Anything you don't like about the pump

 

[Injectedcutty]

Installation was cake....i think it came with a template to mark the mounting holes. Then if i recall right it was only 2 or 3 wires, ground and 12v signal which i ran through an inline fuse...then to the lighted rocker switch and on to my power junction.
Then its just hooking up the vacuum line from the pump to the booster.
The little i got to test it before my motor died i couldn't find anything negative about it. It's not very loud as it has isolators on the mounting pad....but hell i have an aeromotive pump in the spare tire well that makes noise too!
On our cars with loud motors, what's a little noise from a pump keeping the brake vacuum at a safe level?

I'd say go for it if your pocket allows you man! I'm happy with it and glad i got it for sure!

 

[86pontiac2+2]

Or hydraulic set up but more $$

 

[565bbchevy]

For ease of installation I would get the Summit pump and follow the instructions and mount it in line with the vacuum source and wire it up and once you are done it will come on when it senses low vacuum and you won't have to remember to flip a switch and you can enjoy having brakes again without thinking about it.

 

[JAMCAR223]

Or find out what's really wrong with your motor. Low vacuum can be and usually is a sign of weak motor, assuming ( here I go again ) you have you have eliminated vacuum leaks, have your distributor installed correctly, and have your carb adjusted correctly ( idle mixture screws, throttle blade position, idle speed ). Bad / worn rings, burnt valves, worn valve guides, and too much cam timing can all attribute to low vacuum. Even altitude has an effect on an engines ability to produce vacuum. Ex.- I live in Houston, TX ( approx. 100ft above sea level ) but the same engine in Denver, CO ( approx. 6500f above sea level ) will not produce as much vacuum, without retuning. That's one reason the LOW ET / HIGH MPH records are all usually set at lower altitudes. Most records are set at Texas Motorplex ( Dallas ) and Royal Purple Raceway ( Houston ). You have heard of the Texas Mile. Ok, I checked and you live in Ohio, so this is probably not your problem, but it needed to be stated for others reading this in the future. I don't know the condition of your motor, but a leak down test should be in your future. Your cam specs ( I checked the Mutha Thumper line up ) do not warrant a vacuum pump. A vacuum pump is a band aid for your actual problem. Although it may help save your life! LOL I'm not knocking your motor, your decision, or your problem. This is just my .02 cents. Take it or leave it... I will not be offended, and I hope I did not offend you. I back up my statements with the demise of injectedcutty's dead motor, and the fact that your vacuum can did not help. I apologize if I offended you, or injectedcutty. Good luck. James-

 

[565bbchevy]

Everything I have heard about the Comp Thumper cams is the price you pay for a radical sounding idle is very low idle vacuum.
Maybe that's why Comps cam dynos show 2 vacuum readings for their popular SBC cams http://www.compcams.com/Pages/401/dyno-sheets.aspx
but show no vacuum readings for the Thumper cam dynos. http://thumprcams.com/

 

[Injectedcutty]

Or find out what's really wrong with your motor. Low vacuum can be and usually is a sign of weak motor, assuming ( here I go again ) you have you have eliminated vacuum leaks, have your distributor installed correctly, and have your carb adjusted correctly ( idle mixture screws, throttle blade position, idle speed ). Bad / worn rings, burnt valves, worn valve guides, and too much cam timing can all attribute to low vacuum. Even altitude has an effect on an engines ability to produce vacuum. Ex.- I live in Houston, TX ( approx. 100ft above sea level ) but the same engine in Denver, CO ( approx. 6500f above sea level ) will not produce as much vacuum, without retuning. That's one reason the LOW ET / HIGH MPH records are all usually set at lower altitudes. Most records are set at Texas Motorplex ( Dallas ) and Royal Purple Raceway ( Houston ). You have heard of the Texas Mile. Ok, I checked and you live in Ohio, so this is probably not your problem, but it needed to be stated for others reading this in the future. I don't know the condition of your motor, but a leak down test should be in your future. Your cam specs ( I checked the Mutha Thumper line up ) do not warrant a vacuum pump. A vacuum pump is a band aid for your actual problem. Although it may help save your life! LOL I'm not knocking your motor, your decision, or your problem. This is just my .02 cents. Take it or leave it... I will not be offended, and I hope I did not offend you. I back up my statements with the demise of injectedcutty's dead motor, and the fact that your vacuum can did not help. I apologize if I offended you, or injectedcutty. Good luck. James-

No offense taken here man. Vacuum issues weren't the end to my motor, i should've stated that prior. The death of my motor was caused by an insufficient mix of antifreeze years back when i was younger....running it in the dead of winter and got a very small hairline crack on the inner wall of the block-driver side. Had it checked out, and drove it for 5 or 6 years with no problems. However, upon 1st fire up after it sat for 3 years i had a fuel supply issue with my efi....needless to say the block got WAY too hot and the crack made its way through causing the block failure! Sucked to lose that motor as it lasted me 10 good high revving years, but now i get to build a new one yippee!

 

[565bbchevy]

but now i get to build a new one yippee!

You know every new replacement engine has to have more cubic inches than the previous engine, I think it's a law somewhere.