SBC on Alcohol

Old 06-24-2007, 06:12 PM
  #1  
SST4530
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Default 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
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Old 06-24-2007, 08:56 PM
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davis419b
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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.
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Old 06-24-2007, 10:56 PM
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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.
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Old 06-25-2007, 12:24 AM
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Oooops!
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Old 06-25-2007, 02:35 AM
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us7race
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What is this motor in and what does it run now?..
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Old 06-25-2007, 06:01 AM
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SST4530
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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
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Old 06-25-2007, 01:32 PM
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hammertime
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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 !
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Old 06-25-2007, 02:22 PM
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davis419b
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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!
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Old 06-25-2007, 03:57 PM
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hammertime
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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:
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Old 06-25-2007, 04:03 PM
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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.
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