Page 1 of 2 12 LastLast
Results 1 to 10 of 18

Thread: SBC on Alcohol

  1. #1
    Senior Member DYNO TECH
    Join Date
    Feb 2004
    Location
    Leonard, Texas
    Posts
    414

    SBC on Alcohol

    Been running on gas for years, thinking about changeing my SB over to Alcohol. It's a 409 ci. with 14:1 comp. Where would you guys start with baseline settings for fuel pressure, jet size, spark plugs and gap, timing etc...

    Also do you know if there's a kit available to change the Holley HP 1000 to alcohol from gas or should I just by a different carb all together?

    Thanks, Bill

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Jul 2005
    Location
    Wylie,Texas
    Posts
    276
    Buy a Rupert Fuel system and be done with it. Bolt in on ,set the fuel pressure and it will be right. Dont know your complete combo but i would say 35 degrees timing.

  3. #3
    Senior Member DYNO TECH
    Join Date
    Feb 2004
    Location
    Leonard, Texas
    Posts
    414
    Quote Originally Posted by davis419b
    Buy a Rupert Fuel system and be done with it. Bolt in on ,set the fuel pressure and it will be right. Dont know your complete combo but i would say 35 degrees timing.
    Thanks I'll check it out!

    Current combo:

    SB 409
    4.165 bore
    5.7 rod
    3.75 stroke
    14:1 comp
    630 roller
    AFR 227 heads flow 327 / 243 @ .700
    2.100 int / 1.60 ex
    Super Victor
    Huges 5000 RPM 8" converter
    400 trans w/brake soon to be powerglide
    5.13 gear
    33 x 16's
    4 link
    3500 w driver
    Timing 38 deg.

  4. #4
    Senior Member DYNO TECH
    Join Date
    Feb 2004
    Location
    Leonard, Texas
    Posts
    414
    Oooops!

  5. #5
    Senior Member EXPERT BUILDER
    Join Date
    Aug 2005
    Location
    Tell City, IN
    Posts
    356
    What is this motor in and what does it run now?..

  6. #6
    Senior Member DYNO TECH
    Join Date
    Feb 2004
    Location
    Leonard, Texas
    Posts
    414
    Quote Originally Posted by us7race
    What is this motor in and what does it run now?..
    Old setup before 33x16's and 5.13 gear. I think the larger tire will slow us down a bit for now.

    1980 Z-28 (bought new)
    409 SBC / AFR 227 heads
    Holley HP-1000
    Super Victor
    400 trans w/hughes 8" and trans brake
    9" w/ 4.33 gears
    3500 lb (with my fat a$$ driven)
    29 x 10.5 hoosiers
    1.35 60"
    1/4 - 9.86 / 138 mph with really good air

  7. #7
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    www.apdracing.com

    call and ask for Randy tell him David Lanning sent ya

    I've ran APD's carbs for 3 years now, alky and gas. I switched from rupert to a apd on my 383 and it picked up a tenth :lol:

    APD has no lean out valve it warms up in a few mins, starts with no issues even at 35 degrees and is the most consistent carb I've ever owned !
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  8. #8
    Senior Member EXPERT BUILDER
    Join Date
    Jul 2005
    Location
    Wylie,Texas
    Posts
    276
    Go to a big money race and ask around, Rupert will be 2 to 1 over ant other alcohol carb there. VERY, VERY CONSISTENT! A lean out valve is not part of the carb it is an add on you do not need it! I use it if i need to warm the engine up quickly or if it is cold outside. I have not seen one brand over the other that is good for a tenth if both carbs are jetted the same and tuned correctly. Just my opinion!

  9. #9
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    The rupert was purchased new from rupert bolted on and ran no faster then my gas setup, 3 months later after no good results I got the APD set up for the same motor did nothing bolted it on saturday won on sunday. I got no calls back from rupert either is why I wont run his stuff or wont suggest it to anyone poor cust. service stands out to me.

    we will have to agree to disagree APD is all over here 10 state region atleast, there is ruperts but nothing like APD, @ bowling green this year in ruperts back yard it was apd country.

    I have 3 rupert users here locally that switched last year to APD stuff and wont ever run anything else they bolt on and just work. Billet metering block and base plates it was amazing to see how many ruperts and other brand carbs were are in line to be worked on when I go to APD's shop ..

    I love my carb just not my motor from them :wink:

  10. #10
    Senior Member DYNO TECH
    Join Date
    Feb 2004
    Location
    Leonard, Texas
    Posts
    414
    What are your thoughts on Rons flying toilet or terminator injection systems. I was thinking about the small terminator system. May even consider an electronic injection setup for tunability.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy