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Gas\Diesel Engine & Transmission:

carb ?



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Old 10-24-2008, 07:24 PM   #1
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bmartin1979 just gettin started
carb ?

do you guys think that a holley 670cfm street avanger is too much for a 400sbc. i have it on a 454 right now but thinking about swapping to the other motor.
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Old 10-26-2008, 09:13 AM   #2
 
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I think it'll do nicely.
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Old 10-28-2008, 09:19 PM   #3
 
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runnin the 670 truck avenger on a 383. out of the box I had to jet the front down about 4 sizes and dropped 2 sizes in the back. But it should work allright for ya.
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Old 10-30-2008, 06:56 AM   #4
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I would think a 670 would be small for a big block in the first place, but should be fine for a SBC.
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Old 10-30-2008, 10:14 AM   #5
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yeah it was a little small but the big block is stock. and its in a farm truck. i think im going to swap them out this weekend.
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Old 11-07-2008, 06:37 PM   #6
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what do you guys think about using an adapter plate? right now the blazer has the stock intake so i will either have to run a adapter plate or break down and buy a new intake. the holley site recomends not using one but i have never had a problem with them
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Old 11-08-2008, 08:32 PM   #7
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well i put the carb on today and its running great. it really brought out some new life in the motor. the only think i have to do is adjust the kickdown cable. thanks for all the advise.
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Old 11-10-2008, 08:47 PM   #8
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im running a demon 750 on my 383 and it screams, i was running edelbrack 650 thunder but it didnt feed the motoe the fuel it wanted, after i put the demon on it will roast my 40's on dry pavement, it would never even think of that with the 650. this is just my 2 cents
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