Welcome to TMP Carbs' High Performance and Racing Carburetor Blog

TMP Carbs is dedicated to the continuous advancement of the internal combustion engine for pleasure, sport and environmental purposes. Enjoy the blog and feel free to contribute or comment as you desire.

Big Bore / Hi-Flow 4412 Holley two barrels

A Holley L-4412 is 1/2 of a 750 cfm four barrel TMP Carbs

Big Bore / Hi-Flow 4412 is much larger

"Qualifying Carburetor"

TMP Carbs builds the most wicked Big Bore / Hi-Flow 4412 Holley two barrel carburetors, bar none!

  Some use them for:

  1) Racing not limiting modification of the carburetor
  2) Open Comp racing
  3) Qualifying
  4) Events not techin' carburetors
  5) Fun

  Any way you use it, you'll win!

  Options available:

  1) Annular boosters (reduces flow a small amount)
  2) 1 3/4'' butterflies
  3) Weber Power Plate metering block
  4) Billet metering block
  5) Additional air flow capacity with Weber Power Plate


  1) Re-curved fuel curve
  2) Circle track float
  3) Externally stock appearing
  4) Tune-ability
  5) Tech support (if needed)
  6) Thinned throttle shaft
  7) Button head screws

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