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Thread: What size is the coolant sensor for on the Sniper EFI?

  1. #1

    Default What size is the coolant sensor for on the Sniper EFI?

    I'm waiting on my Sniper EFI to come in, and in the meantime I'm setting up my fuel system, and looking at what else I need to do. One of the issues I have to address is where I'm going to put my coolant sensor. I only have two ports on my intake, one being used by my heater and the other is covered by the radiator hose. My driver's side head port is being used by an aftermarket temperature gauge.

    I think I'm going to add a spacer to the thermostat. They have two sizes, a 3/8" port and a -8AN port. Which size would I need for either the coolant sensor? Or maybe I'll put the heater hose on the spacer, and the sensor in the intake.
    http://www.jegs.com/i/Meziere/680/WN0028U/10002/-1
    http://www.jegs.com/i/Meziere/680/WN1028U/10002/-1

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
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    19,293

    Default

    The Sniper EFI instruction manual states the coolant temperature sensor is 3/8" NPT threads.
    http://documents.holley.com/199r11031r.pdf (Holley Sniper EFI Instruction Manual - Item 3, Page 2)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

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    I used the passenger side head on my SBC with headers, no problem.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    19,293

    Default

    I installed my oil pressure transducer & OEM oil pressure sending unit, at the rear of the engine block with a Street Tee ¼" NPT fitting. I've seen this done with the coolant temperature sensor too.
    P.S. I installed my fuel pressure transducer on the remote mounted fuel pressure regulator's gauge port.
    http://forums.holley.com/showthread....2756#post32756 (Related Forum Thread)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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