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11-18-2009, 01:04 AM
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#1
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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Boost port?
I'm just wondering if anyone can tell me were to hook up a boost vacumm gauge on an lt1. I've tried on the side of the throttle body but I only get boost and no vaccume reading, I've also tired on the driver side and I get vaccum readings but no boost reading. Were did everyone else hook up the vaccumm line.
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1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-18-2009, 04:54 AM
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#2
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Regular Member
Join Date: Nov 2009
Posts: 29
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What kind of boost you have? Turbo or sc.
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11-18-2009, 07:00 AM
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#3
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Regular Member
Join Date: Apr 2009
Location: Tampa Fl
Posts: 167
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It needs to be on the intake manifold behind the throttle body. Im trying to figure out how you got a port to read vacuum but wouldn't read boost. I can understand the port that only saw boost but any port that sees vacuum should also see boost on a FI engine.
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11-18-2009, 09:31 AM
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#4
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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yea I kinda thought it was weird, my only thought is mabee the gauge is bad.
__________________
1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-18-2009, 10:02 AM
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#5
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Supporting Member
Join Date: Oct 2007
Location: Miami, FL
Posts: 917
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T it up here.
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11-18-2009, 07:38 PM
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#6
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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yea thats were its hooked up right now, but I'm not seeing anything but vacum. And the supercharger seems to be running fine and still burning the tires.
__________________
1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-18-2009, 11:29 PM
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#7
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Regular Member
Join Date: May 2007
Location: Good Ole Wv
Posts: 5,058
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Take a air compressor and blow air in the line. Only a little and see it it will read psi that way. Either it is the gauge or you have a boost leak somewhere. That or the gauge line.
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1995 T/A M6: -Tops,390 Eagle Forged Fully Built Stroker,Procharged at 12lb'z(Currently Down)
1995 T/A M6:Hard Top, Stock cube, cc502 w/1.6's, Ls7 Lifters, Summit Pushrods/Guide Plates, 10.734:1, P&P Heads, Arp H/B's, P&p Intake, 30lber's, No Emissions, Flowmaster Catback, K&N Intake, Longtubes & Ory, Pro 5.0, 3pt connectors, Lowered 1.5in, 2.5 Cowl hood, ws6 wheels & Tune by Solomon
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12-02-2009, 07:33 AM
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#8
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Regular Member
Join Date: Apr 2009
Location: Tampa Fl
Posts: 167
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Only other thing is an internal pcv of some sort? Im not 100% familiar with the LTx engines.
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12-02-2009, 10:47 PM
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#9
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Regular Member
Join Date: May 2007
Location: Good Ole Wv
Posts: 5,058
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Mine was fine with the pcv valve installed in the intake. But I ran a filter on the valve cover. So that shouldn't be his problem. Or atleast I wouldn't think so.
__________________
1995 T/A M6: -Tops,390 Eagle Forged Fully Built Stroker,Procharged at 12lb'z(Currently Down)
1995 T/A M6:Hard Top, Stock cube, cc502 w/1.6's, Ls7 Lifters, Summit Pushrods/Guide Plates, 10.734:1, P&P Heads, Arp H/B's, P&p Intake, 30lber's, No Emissions, Flowmaster Catback, K&N Intake, Longtubes & Ory, Pro 5.0, 3pt connectors, Lowered 1.5in, 2.5 Cowl hood, ws6 wheels & Tune by Solomon
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01-17-2010, 06:22 PM
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#10
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Regular Member
Join Date: Nov 2009
Posts: 36
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i was reading this thread and no one responded a solution. I am having the same issue,i moved the gauge to the drivers side of the intake and i'm only getting vacuum readings. Please respond
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01-18-2010, 12:24 PM
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#11
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Supporting Member
Join Date: Mar 2007
Posts: 18
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Mine is hooked up the same way as 2fast4u ,I get boost and vac readings
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01-18-2010, 05:12 PM
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#12
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Regular Member
Join Date: Nov 2009
Posts: 36
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hey man do you have any pic's so i could see exactly how you have it??
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