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-   -   float valve orifice (https://forums.maxperformanceinc.com/forums/showthread.php?t=883314)

Joe 12-01-2025 05:40 AM
float valve orifice
 
1 Attachment(s)
Is this the orifice that in the 66 tripower flooding thread folks are saying should be .086 for end carbs and .118-.120 for the center?
thanks

Kenth 12-01-2025 07:24 AM
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If you can not find the original needle & seats you´ll have to measure the orifice with gage pins.

Here are the original part-#´s. Delco part-#´s omittes the 702.

Joe 12-01-2025 07:56 AM
Thank you for the info. Just purchased all NOS pieces.

carbking 12-01-2025 10:04 AM
The information Kenth posted is from the original Pontiac Master Parts book.

The same information is available in the Rochester Carburetor Master Parts book. Rochester also eliminates the 702 AND changes the 38 to a 30. Thus the 1966 Rochester numbers would be 30-03 for the ends and 30-13 for the center.

Original reference books such as these SHOULD be on the bookshelf of ALL enthusiasts !

Jon


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