850 apd on sbc

Old 03-10-2009, 05:55 PM
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ojpearce05
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Default 850 apd on sbc

is a 850 apd alcohol carb. too big for a 396 sbc
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Old 03-10-2009, 06:25 PM
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bjuice
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not even close to enough information to answer this Question
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Old 03-10-2009, 06:30 PM
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ojpearce05
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230 runner steel heads, victor jr. intake, 12.5/1 comp., have to find cam cam card but a solid flat tappet around .550 or so. anything else?
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Old 03-10-2009, 06:36 PM
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BEAST477
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Is it a drag only,street, street/strip what does it weigh, gear ratio,trans,conv stall and rpm range.
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Old 03-10-2009, 06:42 PM
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ojpearce05
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drag only, 2400 pounds, 4.88 gear, 1/8 mile, p/g, 5000 stall, mostly footbreak, runs 6.30 now on gas, just want to try alcohol maybe a little faster and consistint for double entering.
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Old 03-10-2009, 06:55 PM
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That will get you some awnsers. Sorry i can't help i don't run alcohol.
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Old 03-10-2009, 07:06 PM
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I972Nova
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It shouldnt be too big for ya. I run a rupert dominator that flows almost 1200 cfm on my 409 small block. Alky is usually good for .15 to .20 or so on a mid 6 second car.
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Old 03-10-2009, 07:14 PM
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i think your in the ball park..I had a 511ci and APD built me a custom Alcohol carb and it was an 1150cfm

the only thing i see that would concern me is your compression. Alcohol responds well to compression i think you would see more gains on the gas to alochol switch if you were 14 to 15:1 compression..
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Old 03-10-2009, 08:09 PM
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850 should work fine, I assume its used and not from apd if your asking. My question would be does it have the same air bleeds/jets it did when done by apd ? Call apd and ask for Joe or Randy and see if they can tell you what its suppose to have. Remember to back timing off some.
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Old 03-10-2009, 08:10 PM
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Originally Posted by DragsterJosh
It shouldnt be too big for ya. I run a rupert dominator that flows almost 1200 cfm on my 409 small block. Alky is usually good for .15 to .20 or so on a mid 6 second car.
comparing a rupert to a apd is like comparing coal to gold isnt it :lol: :lol: :wink: :P
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