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07-08-2014, 11:26 PM
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#1 |
 Drives: 1989 GTA Trans Am Join Date: Jun 2012
Location: Cypress, California
Posts: 610
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Crankcase Vacuum Pump
Anyone running one? Also the pros and cons.
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07-09-2014, 09:35 AM
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#2 |
Drives: 416 w/TH400 Join Date: Mar 2012
Location: Houston
Posts: 697
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what do you have done to your motor...... need more info
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ERL 416 - 12.5 cr, TH400, Custom VVT Cam, PRC 255 heads, NW 102 TB, Aeromotive stealth fuel system, Fast 102 plumbed with a nitrous express direct port kit, BMR 15" conversion kit
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07-09-2014, 01:29 PM
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#3 | |
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Drives: 1989 GTA Trans Am Join Date: Jun 2012
Location: Cypress, California
Posts: 610
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Quote:
Motor will be a N/A LS3 based 427. 4.070" bore and 4.1" stroke. Cam will be a EPS 238/243 with .629 lift. Compression ratio is 11.4:1. TSP ported L92 heads with upgraded dual springs. Rhino ported LS3 intake manifold. Bo White ported throttle body with a custom 4" CAI. 1 3/4" x 1 7/8" merge collectors. 3" dual exhaust all the way with a Pypes X-pipe. Hope to shift in the 6500 to 6600 rpm range. |
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07-09-2014, 03:06 PM
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#4 |
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Drives: 416 w/TH400 Join Date: Mar 2012
Location: Houston
Posts: 697
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from what I've read once you stroke the stock sleeves the Vac pump helps alot............ I will be getting one for my 416 build
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ERL 416 - 12.5 cr, TH400, Custom VVT Cam, PRC 255 heads, NW 102 TB, Aeromotive stealth fuel system, Fast 102 plumbed with a nitrous express direct port kit, BMR 15" conversion kit
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07-09-2014, 05:00 PM
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#5 |
       
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Im debating one for my stock bottom end. It will pickup power with it.
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07-09-2014, 05:57 PM
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#6 |
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Drives: 1994 1LE / 2006 Z51 Corvette Join Date: Jul 2009
Location: Plano, TX
Posts: 2,829
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Depends on the pump you use, and how much vac. it can actually pull.
This is one of the beauties about dry sump oil systems is that they will combine a killer oil setup with one hell of a vac. pump to boot. You may have to play with a relief valve to make sure it does not make to much vac. and damage a seal or pull to much oil so do keep that in mind, most can not be left to run on their own. A good vac. pump can help ring seal, oil control, crank case pressure, and yes even help produce a bit more HP because it removes a lot of the windage pressure on the bottom side of the pistons. |
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07-10-2014, 09:51 AM
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#7 |
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Drives: 416 w/TH400 Join Date: Mar 2012
Location: Houston
Posts: 697
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this is what I'm going with
http://www.gzmotorsports.com/SVPK-LS...-pump-kit.html
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ERL 416 - 12.5 cr, TH400, Custom VVT Cam, PRC 255 heads, NW 102 TB, Aeromotive stealth fuel system, Fast 102 plumbed with a nitrous express direct port kit, BMR 15" conversion kit
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07-10-2014, 10:30 AM
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#8 |
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Drives: 14 Camaro 1LE,328i, and some Hondas Join Date: May 2014
Location: Virginia
Posts: 799
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Can't say I've run them on my personal engines, but we sure do have a nice big one here at work for these dresser recips! haha. Like someone else said, you have to watch how much vacuum they pull, because they can pull oil out of the crankcase.
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07-25-2014, 12:15 PM
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#9 | |
   
Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010
Location: Little Rock, AR
Posts: 7,129
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Quote:
I have two valves to control vacuum. The big aluminum up front does the bulk of the adjustment. The small brass one on the valve cover let's me fine tune it. The pump is the black thing just below the aluminum knob/valve to the right of the catch can.
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New Ride -- 2015 Z06 2LZ (stock) -- Journal
Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread |
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07-25-2014, 07:49 PM
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#10 |
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Drives: 1989 GTA Trans Am Join Date: Jun 2012
Location: Cypress, California
Posts: 610
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Thank you for the update and pictures. I will probably go with GZ motorsports and maybe shoot for around 10 pounds. They seem to have a good handle on this.
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