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#491111 - 02/29/08 03:00 PM
Distributor vacuum advance and carburetors-'49 vs. '53 Olds
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rocklin_ron
Member
Registered: 09/25/06
Posts: 11
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I have purchased a '49 Olds 88 with a Carter WCFB carb installed (probably '53 Olds) but the car still has the '49 distributor. The '49 vacuum advance needs venturi vacuum (above the throttle plate) but the WCFB carb only has a tap for manifold vacuum (below the throttle plate). Therefore, I cannot use the vacuum advance as is because it is advancing considerably even at idle. I believe I need to do one of the following:
1. Have a venturi port machined on my existing WCFB carb
2. Install a '53 vacuum advance on my '49 distributor (will it fit and work properly?)
3. Install a '53 distributor with vacuum advance (will it fit and work properly?).
4. Put on a stock intake manifold and carb (I do not want to do this as I have no parts).
5. Install a modern carb with a proper vacuum tap (I do not want to do this because it will create linkage problems with the hydramatic kickdown rod etc.).
Any helpful responses would be appreciated.
Thanks.
Edited by rocklin_ron (03/26/08 12:35 AM)
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#497221 - 03/26/08 12:40 AM
Re: Distributor vacuum advance and carburetors-'49 vs. '53 Olds
[Re: rocklin_ron]
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rocklin_ron
Member
Registered: 09/25/06
Posts: 11
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I solved my problem by approach #3. I purchased a rebuilt '51-'53 distributor from Fusick and it works properly with the full vacuum from the WCFB carb. I believe that using only the '53 vacuum advance on the '49 distributor would not have solved the problem, although it would probably fit mechanically.
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