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Old 07-04-2003, 05:49 PM
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Bbc Tri Power

Hi, Iwould like some advice. Iam building a 50 chevy p/u, It will have a BBC 396 with a 700R4, now i have the option of a 4bbl set up or a vintage TRI POWER set up both for oval port heads. The 3x2 would look awsome but my main concern is does this need to be tooned up on a regular basis? or does the linkage need to be adjusted alot? I PLAN ON PUTTING A LOT OF MILES when this is done. any advice would be a big help thank you. Michael. oops sorry about the caps.

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Old 07-04-2003, 06:13 PM
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The original tri-power set up will work well provided you have the original tri-power carburetors which should be holleys for your 396. This system worked well, as you only cruise on the middle carburetor, and all of the driveablity will come from the center carb where your outer carburetors will be there for when you mash it.
It will be harder to tune the system than a single four barrell, but once you've got it done it should be trouble free. Watch vacuum leaks with a tri-power which can cause lots of hassles.
I say tri-power all the way!!!!!
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Old 07-04-2003, 07:46 PM
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Bbc TRI-POWER

Thanks NAIRB for the input, I can't think of a more awsome sight than a TRI with the vette chrome air cleaner.
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Old 07-04-2003, 08:36 PM
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Had a '51 half-ton myself that I drove for 13 years with various engine/trans combos, but the last 3-4 years was with a 396 /TH400. Sure wish I could have located a tri-power setup, I'd have done it in a heartbeat!
The factory carbs were vacuum operated, so there would be no linkage to adjust and that's a good thing. You shouldn't see any difference in driveability with the 3x2's...... I say go for it!
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Old 07-19-2012, 11:09 PM
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IN refrence to the tri power on the BBC 396 it will work fine and your concern of tuning ,the front & rear are NOT tuneable jet size change only
they are vacumn operated as to not over carburate only useses as much throttle position as needed by load applied good choice LOCAR makes
a kit KD 2400ht to use with 700r that adapts throttle valve cable to holley
to maintain correct line & pump pressere VERY IMPORTANT I am using
the same setup om 53 chevy pu 496 oval port comp 268 cam 2400 stall
very satisfied hope this helps
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Old 07-20-2012, 01:21 AM
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Hey 496, I see you have 1 post but this thread is from 2003, always look at the date first.....I did the same thing last week so don't feel bad.
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