Page 1 of 4 123 ... LastLast
Results 1 to 10 of 39

Thread: Does Holley model 2300 1-684 have a C.A.R.B. E.O. number?

  1. #1

    Cool Does Holley model 2300 1-684 have a C.A.R.B. E.O. number?

    Hi. I've gone to great lengths to find an old shelf stock Holley model 2300 1-684 carburetor that is a direct replacement for the Ford 5.8L Variable Venturi carburetor found on such cars as mine, the 1988 Ford LTD Crown Vic ex-police car that I've owned for a long time and am excitingly fixing up. I finally found and bought the Holley 1-684 on eBay (never been used in original box). I bought this carburetor because I've found numerous references online that it is the only California Air Resource Board smog legal replacement for the dreaded Variable Venturi and is a nice improvement over stock. However, I'm having the hardest time finding the CARB Executive Order number for the Holley carb. Without this, they will not allow me to pass the smog visual inspection. I've found numerous Holley CARB E.O. numbers online on the CARB website just nothing I can associate with this direct 2 barrel carb replacement from Holley. I emailed Holley but only got a response that the 1-684 (long discontinued) was the right replacement carburetor for my car back in the day due to the feedback feature. Does anyone have a list of C.A.R.B. (California Air Resource Board) numbers for Holley products or knows how to locate this number?

    Thanks, Dustin

  2. #2
    NorCalDiesel Guest


    CARB states that only aftermarket parts that are not direct replacement parts need EOs.
    You can find CARB EOs here:

  3. #3
    Tom K Guest


    88LTDCV351, welcome to the forum. Conversion kit number 1-684 is subject to C.A.R.B. vehicle code section 27156 exemption under title 13 section 1900.
    If you are having problems passing emissions PM your E-mail address and I will send you the specific C.A.R.B. information regarding part number 1-684. (The file is too large to attach to this post.) Thanks, Tom

  4. #4


    Great info. Thanks.

  5. #5


    The box says a stepper motor may also be required. What is a stepper motor?

  6. #6


    Actually, I guess its called a Holley 46-145 feedback actuator. Is it necessary? If so, where do I get one?

  7. #7


    Tom, were you able to send me any information? My Variable Venturi gave up the ghost and I replaced it with another Variable Venturi but they said it gave up the ghost also. Now I'm looking at using the Holley 1-684.

  8. #8


    OK, my mechanic has the Holley 1-684 on the car but he said he is having trouble getting it tuned in. Any advice I can give him? I need to get this car smogged soon before my license plate expires. I might have to find another remanufactured Variable Venturi at RockAuto or Autozone.

  9. #9


    OK, I stopped by the shop not long ago and the mechanic said the carb is running fine. The only issue is some bracket (kickdown?) that he is having trouble getting right as he had to fabricate it. Something about the RPM being too high or too low (the car would die). Any advice?

  10. #10
    Join Date
    Dec 2009


    Quote Originally Posted by 88LTDCV351 View Post
    The only issue is some bracket (kickdown?) that he is having trouble getting right as he had to fabricate it.
    Scroll about halfway down for Ford kickdown brackets: (Holley Carburetor Bracketry)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 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.

Page 1 of 4 123 ... LastLast

Tags for this Thread

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