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Holley Sniper 92mm with OEM IAC?

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  • Holley Sniper 92mm with OEM IAC?

    I bought a Sniper 860004 92mm for my LS3 Crate engine. I also bought a new GM IAC, 17113598. Upon installing, it was a really tight fit. Two screws pushes it in place. Am I using the right IAC or I have to get the Holley IAC? I'll be running Terminator X, do I need to repin it for OEM IAC if I can use it? Or the Holley IAC? Thanks.

  • #2
    I'm pretty sure those throttle bodies use an IAC from an LS1. The real question is why aren't you using DBW with a LS3? Andrew
    Instagram: @projectgattago
    Offering remote Holley EFI tuning.
    I deliver what EFI promises.
    Please get in touch if I can be of service.

    Comment


    • #3
      The Holley 860004 product webpage answers your question: "Will need to use 543-105 for IAC motor..." Also the instructions detail the wiring changes (IAC pin-out) depending on your application: https://documents.holley.com/199r11177rev2.pdf (Holley 860004 92mm Throttle Body Instructions)
      May God's grace bless you in the Lord Jesus Christ.
      '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232-244 duration/.623" lift/114 LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

      Comment


      • #4
        Got it. Thank you. Let me buy the Holley IAC now and swap the two wires on my Terminator harness.
        That's probably why my factory IAC feels like it doesn't fit. Probably the bore is smaller on the Holley throttle body.

        Comment


        • #5
          You're welcome.
          May God's grace bless you in the Lord Jesus Christ.
          '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232-244 duration/.623" lift/114 LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

          Comment


          • #6
            I just received the Holley 543-105. It seems to fit better and the right size for the throttle body. However, one of the bolt does not line up. It was off, but about 1-2mm. I can only use one bolt to secure it, unless I enlarge the other hole. Is this normal?

            Comment


            • #7
              Then that Holley 860004 92mm Throttle Body webpage detail is wrong. It uses the Holley 543-34 LSx IAC motor.
              Read section 16: http://forums.holley.com/showthread....neral-IAC-Info (General IAC Information - Read "IAC NOTES")
              May God's grace bless you in the Lord Jesus Christ.
              '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232-244 duration/.623" lift/114 LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

              Comment


              • #8
                Im confused now. Did I have the correct IAC for my Holley 92mm? If I get the 543-34 LSx IAC, do I still need to swap the two wires? I also read one of the posts there saying I was supposed to Dremel one side of the mounting hole to fit. So which one do I use now? 543-105, enlarge hole, swap two wires? 543-34, direct bolt-on? Swap wires still?

                Comment


                • #9
                  I think the Holley 543-34 LSx IAC motor is a direct bolt-on with correct wiring.
                  May God's grace bless you in the Lord Jesus Christ.
                  '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232-244 duration/.623" lift/114 LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

                  Comment


                  • #10
                    543-34 is arriving tomorrow, hopefully it works this time. Good that I don't have to mess with switching wires, but I guess I'll find out when startup to see if it idles correctly.

                    Also question on the throttle body: The breather tube is pointing up. I see the design is to prevent it from interfering the throttle cable. Can that be moved? I tried twisting it but looks like it's press fitted. Kinda want to point it down a bit or maybe forward.

                    Comment


                    • #11
                      With the key in the on position, you can change the IAC Park Position from zero to 100% & back to make sure the IAC cycles through its range. You can do this before installing the IAC into the throttle body. Andrew
                      Instagram: @projectgattago
                      Offering remote Holley EFI tuning.
                      I deliver what EFI promises.
                      Please get in touch if I can be of service.

                      Comment


                      • #12
                        I'll do this to verify. Thanks.

                        Comment


                        • #13
                          Originally posted by Danny Cabral View Post
                          Then that Holley 860004 92mm Throttle Body webpage detail is wrong. It uses the Holley 543-34 LSx IAC motor.
                          Read section 16: http://forums.holley.com/showthread....neral-IAC-Info (General IAC Information - Read "IAC NOTES")
                          So if I repin according to the GM diagram of section 17 in the post you linked above, would that be the correct way to use a GM LSx IAC with the Sniper 92mm TB? I prefer to stay OEM sensors as much as possible. Im running Terminator X. Thanks for sharing your knowledge!

                          Comment


                          • #14
                            Originally posted by Danny Cabral View Post
                            I think the Holley 543-34 LSx IAC motor is a direct bolt-on with correct wiring.
                            Sorry to bump an old thread, but it would help if Holley would update their information.
                            Has anyone verified that what Danny suspects is correct?
                            My use case: Sniper 92mm TB, I need an IAC solenoid. I don't mind swapping wires around if need be.
                            Fantastic forum you guys have here. Thanks for the information.

                            Comment


                            • #15
                              The Holley 543-34 LSx IAC motor is the only GM LSx IAC motor Holley sells. So it must be correct for a Holley EFI LSx main harness and GM LSx type throttle body. (It'd be nice if Srkelvin updated this thread.)
                              May God's grace bless you in the Lord Jesus Christ.
                              '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232-244 duration/.623" lift/114 LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

                              Comment

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