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#1
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Vacuum pump choices
Thinking of adding a vacuum pump to my IA motor.
GRZ, Star, Moroso-pros cons to the different ones. Car wil nto be getting lots of runs just a few outings a year.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#2
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I just took mine off, I drive more on the street and go to the track a couple times a year. I have it adjusted down about as far as I can and if I drive any distance like 100 miles or so It will fill the tank and oil will come out the top vent. So if you drive any distance keep an eye on it.
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#3
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Ive heard good reviews about the GZ pump. Also looking at the AeroSpace pump. I know a couple people working there as they are local to me.
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#4
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I use a Star Machine sportsman pump..SD provided the pump, mandrel, catch tank,fittings, hoses, belt brackets and bolts . It works well pulls a good vacuum..I may get an ounce of oil after a 200 mile round trip and a few passes at the track.
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
#5
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A 200 mile trip will spray oil down the side of the car. At 60 - 65 on the highway it pulls about 8" of vacuum and the relief valve is adjusted all the way out.
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#6
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Are you running a dipstick?
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1969 LeMans..Liberty Blue 2001 WS6..Sunset Orange 1973 Pro Street Firebird..Lucerne Blue |
#7
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#8
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Ok, star machine on my 535 street/strip with no issues
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1969 LeMans..Liberty Blue 2001 WS6..Sunset Orange 1973 Pro Street Firebird..Lucerne Blue |
#9
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GZ best pump out there IMO
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#10
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Cylinder Head drainback issues? Sorry for getting off track. I just installed for this year the Moroso enhanced 4 vane. Nice piece. Pulls vac immediately. Mandrel and pulleys from Butler. I got good deals on the tank and hoses from Amazon.
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#11
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Star best pump out there IMO
Second best is Moroso IMO |
#12
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Thanks guys.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#13
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I agree! You pay for it ,but they rock!
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
#14
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Any pictures guys? Esp. a second gen F body.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#15
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My pump gas setup
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#16
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Can't go wrong with a moroso pump. It will pull as much vacuum as you need or more then you need. All depends on how good engine is sealed up.
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
#17
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Pulling from a valve cover breather like header vac breathers with a baffled grommet OK or pull too much oil?
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#18
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Quote:
That was how I did it at first... never had a problem with it that way.. I personally just never liked the way it looked, so I welded in a bung. Chad
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3500lb 10.5" tire. 5.34@134.4 with a poor 60' |
#19
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Here is a fun question....
How much vacuum is every one pulling? In my car on the analog gauge I'm right around 15 " at the stripe... on the dyno with a transducer (digital sensor) it was only pulling upper 7's... Now I have put a grid module to record it during the run on the track and it is reading the same as the dyno... 7.8-7.9" at the stripe... So I'm guessing the analog gauge is incorrect.. Just wondering if anyone else has checked this? Chad BTW gzmotorsports 104 pro pump
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3500lb 10.5" tire. 5.34@134.4 with a poor 60' |
#20
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On my street car I run the modified Butler version , I think it was a converted smog pump. One valve cover plugged, pulls from the other side to a moroso breather tank. Has always worked pretty well
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1967 GTO 416 5-spd streetcar 11's on HP low 10's 150 shot 1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD! 1964 421 GP-Sold 6.0 cert. Fiat bodied altered blown alcohol Pontiac IAII-Sold |
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