Do-It-Yourself E85 Conversion Kits

For Holley, QuickFuel, Proform, and Demon carburetors. All E85 kits come with gaskets and instructions.

  • 4412 kit--for 2-barrel 350 and 500 carbs--includes 2 jets, 1 power valve, 1 purple or black billet metering block (or send us your stock block to be converted), 1 high-flow needle & seat, 1 accel nozzle, and 1 50cc GFLT pump diaphragm.
  • 4150 kit--for 4-barrel double-pumper carbs--includes 4 jets, 1 high-flow PV, 1 PV plug, 2 accel nozzles, 2 purple or black billet metering blocks, 2 high-flow needles & seats, and 2 30cc GFLT pump diaphragms.
  • 4160 kit--for 4-barrel vacuum secondary carbs--includes 4 jets, 1 high-flow PV, 1 accel nozzle, 1 purple billet metering block and your choice of a 2nd metering block or a jet plate (depends on your carb needs), 2 high-flow needles & seats, and 1 30cc GFLT pump diaphragm.
  • 4500 kit--for HP-style Dominators--includes 2 green race billet metering blocks (a street-friendly PV primary metering block may be substituted upon request), 4 HP-style annular boosters, 2 Nitrophyl® floats (standard primary and notched secondary), stainless steel squirter screws, 2 .130" stainless steel needles & seats,  2 GFLT 50cc diaphragms and springs, air bleeds, and 4 jets.

Personalized custom tuned kits please read this *Information Sheet*

PROFORM is a registered trademark of Specialty Auto Parts USA, Inc. Holley®, Dominator®and Double Pumper® are registered trademarks of Holley® Performance Products, Inc.

Not sure if you can do the work? Read the instructions for 4150


4412 Purple Do It Yourself 2 Barrel Kit
$155.00

4412 Black Do It Yourself 2 Barrel Kit
$155.00

4150 Purple Do It Yourself Double Pumper Kit
$295.00

4150 Black Do It Yourself Double Pumper Kit
$295.00

4160 (Purple only) Do It Yourself Vac Secondary Kit
$295.00

4500 (Green only) Do It Yourself Kit for HP Dominator
$395.00

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