Carburetor services
Need custom work done on your E85 carburetor? We can expertly install E85 boosters, mill choke horns, modify metering blocks, set up for blow through, freshen up or whatever other work you need to make your race carb a top notch piece. Below are some of the services we offer, please call us before shipping your carburetor and for final pricing.
Install Downleg boosters for 4150 series Holley carbs. Horsepower Innovations custom downleg boosters, application specific.
$80 installed
Install Annular boosters for 4150 or 4500 series Holley carbs. Horsepower Innovations custom annular boosters, application specific.
$110 installed
Mill choke horn on 4150 or 4160 series Holley carbs. Set up on a special jig, milled, and hand deburred. Air bleeds removed and tapped for adjustable (Holley or set screw type).
$85 complete with set screw type bleeds
Modify metering blocks for E85. Resize main well, exit channels, and other required passages for E85. All metering orifices (IFR, PVCR, emulsion holes) threaded for adjustable set screw inserts. Hand debur, clean and install new well plugs.
$125 complete with set screw type restrictors.
Flow carburetor. We realign boosters and index the throttle plates for maximum flow and best booster signal. Before and after flow numbers provided to customer.
$50 complete with spec sheet
Custom Work
We have the expertise and equipment to do just about any carburetor work you may need. Please call with your specific request and we will discuss pricing, time frame, and practicality of doing the work. We use proper jigs and fixtures for all our machining so you can expect accurate, professional work.
N2O Services
Let the E85 specialists set up your N2O system for E85. We use digital timing system and digital scales to accurately tune your nitrous system for use with E85 as enrichment fuel. We provide a flow sheet indicating correct jetting, fuel pressure, and nitrous pressure for each horsepower level. We check for leaks and proper solenoid operation. We supply jets and perform any necessary modifications to the N2O plate. Repair parts are not included.
Flow N2O plate system.
Setup and first tuneup $149.95.
Each additional tuneup / HP level $49.95.
Free return shipping when 3 or more tuneup are purchased.
Flow N2O fogger system.
Setup and first tuneup $189.95.
Each additional tuneup / HP level $69.95.
Free return shipping when 3 or more tuneups / horsepower levels are purchased.
Flow fogger + plate or multi-stage N2O system.
Call for pricing
Blow-through Carb Specialty Services
Dual Needle and Seat float bowls. These ProSeries dual needle and seat bowls support up to 1800HP on E85 in a blow through application. We perform modifications to these bowls to reduce the effects of fuel slosh due to the extremely hard launch you would expect in a high horsepower blown drag car.
$525 pair. Assembled complete with bowl screws, floats, and .130 Needle & Seat assemblies.
Boost referenced power valve. This new boost referenced power valve provides progressive enrichment proportional to boost pressure. Clears floats in both dual needle/seat and standard single needle/seat float bowls. Minor modification to main body required $125
SERVICES
Double Pumper Carburetors
650, 750, and 850 (shown to left) models.
zinc dichromate metering blocks and main bodies; aluminum bowls with integral site windows dyed to match.
Adjustable idle feed restrictors, power valve channel restrictors, and air bleeds (set screw style adjusters)
Custom step downleg e85 boosters.
Options
Mill Choke Horn
Manual or Electric Choke
Set up externally referenced power valve for roots blower setups.
Classic Double Pumper e85 carbs start at $680
HP Series Carburetors
HP 390 (500 cfm), HP650, HP750 (shown left), HP950 (830cfm), and HP1000 (950cfm) models
Zinc dichromate main body and black billet metering blocks; Aluminum bowls with site windows dyed to match main body.
Adjustable idle feed restrictors, power valve channel restrictors, emulsion holes, transition slot restrictors, and standard Holley style air bleeds.
Fully machined HP style high-flow/high-signal e85 boosters.
Options
1:1 linkage, blocked power valve.
Upgrade to Ultra HP aluminum main body and Ultra HP bowls
Upgrade to annular boosters
CNC Ported Venturi to desired size / flow (880, 920 cfm popular).
Powder coat main body and bowls. Color of your choice -- black, silver metalic, etc.
Powder coating main body and bowls
HP Series e85 Carburetors start at $740
Ultra HP Series Carburetors
Ultra HP Series Carburetors
Ultra 650, 750, 850 (shown left), and 950 cfm main body hand finished to CFM of your choice up to 970 cfm.
Aluminum Holley Ultra main body, black billet externally adjustable metering blocks, aluminum Ultra bowls with dual site windows.
Adjustable idle feed restrictors, power valve channel restrictors, emulsion holes, transition slot restrictors, externally adjustable 3rd circuit, and standard Holley style air bleeds.
Fully machined HP style high-flow/high-signal e85 boosters.
Options
Annular boosters
Black anodize main body and bowls OR powder coat color of your choice.
Ultra HP e85 carbs start at $865
HP Dominator Series Carburetors
HP 950 (shown left), 1050, and 1150 models.
Two circuit metering system, available up to 1200 cfm.
Aluminum HP main body with external linkage and custom red billet booster inserts, custom red billet metering blocks, and aluminum bowls with built in site window dyed silver to match main body.
Adjustable idle feed restrictors, power valve channel restrictors, emulsion holes, transition slot restrictors, and standard Holley style air bleeds.
Options
powder coat main body and bowls
knife edge boosters and port to desired size (1200 cfm max)
HP Dominator e85 carbs start at $965
Ultra HP Series Dominator Carburetor
HP 950, 1050, 1150, and 1250 models
Aluminum HP main body with external linkage. Venturi hand finished to desired CFM up to 1350 cfm.
Black billet booster inserts, boosters hand finished for optimal flow.
Available with our proprietary externally adjustable 3 circuit black billet metering blocks. Use standard threaded gasoline Holley jets up to 1300 cfm, alcohol threaded jets also available.
Holley Ultra aluminum bowls with dual built in site windows have 20% more capacity and internal baffling for high power engines.
Adjustable idle feed restrictors, power valve channel restrictors, emulsion holes, transition slot restrictors, externally adjustable 3rd circuit, and standard Holley style air bleeds.
Options
Powder coat or black anodize
Ultra HP Dominator e85 carbs start at $1150
Blower Carburetors
Blow through carbs
4150 series Classic HP carburetors for centrifugal blower or turbocharged engines up to 900 HP
500 cfm through 880 cfm
Same as Classic HP carburetors, but includes annular boosters and BRPV
Starting at $825
4150 series Classic HP series carburetors for centrifugal blower or turbocharged engines up to 1600 HP (shown to right)
750 cfm through 925 cfm
Billet base plate with threaded vacuum/boost ports.
Includes annular boosters, BRPV, and dual needle and seat float bowls.
Starting at $1,325
