Results 1 to 2 of 2

Thread: Microswitch on a 4150?

  1. #1

    Default Microswitch on a 4150?

    I bought an NOS microswitch from Summit for my Holley 4150, so I could use it as the kickdown switch on my TH400:
    I was extremely disappointed to find upon reading the instructions, that it requires me to REMOVE the choke system from my carb!
    I'm extremely pissed that Summit does not mention this! Does anyone know any possible way I can fit this to my 4150 without removing the choke?
    Thanks! Alex

  2. #2
    Join Date
    Dec 2009


    Which NOS microswitch kit did you purchase? It's not that hard to fabricate a bracket to mount the throttle activated microswitch (without tampering with the choke). I've even seen it mounted on the throttle linkage, as opposed to on the carburetor itself.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 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 tires.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us