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Author Topic: Oldsmobile 70-74  (Read 1055 times)

Offline mcx

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Oldsmobile 70-74
« on: March 06, 2019, 12:22:56 PM »
Hello Cliff...I was curious why Oldsmobile would drill the primary throttle blades when it already has a idle air bypass circuit?...everyone i see on EBay has those holes drilled added to the blades.
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Offline Cliff Ruggles

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Re: Oldsmobile 70-74
« Reply #1 on: March 07, 2019, 03:29:37 AM »
Not sure why.  Some Pontiac Ram Air carbs also have drilled throttle plates.

I prefer to add idle bypass air with the bypass system vs drilling the plates......Cliff
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Offline mcx

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Re: Oldsmobile 70-74
« Reply #2 on: March 07, 2019, 11:10:34 AM »
...yeah, this carb 7043252 has the base plate idle bypass at .059" and the throttle plates drilled at .111"
...I keep searching EBay for a cheap early 70s Pontiac version just so I  can have one to compare..soon enough.
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