Re: 4053 carb
The four digit started in 1972 or 1973.......Eric will know for sure.
An example of a four digit would be 1648.......that's the 164th day of 1978 or 1988 and so on. Sometimes when I take a carb apart, it will have some sort of casting date on the carb and/or metering blocks. It's a circle the a dots on the outside depicting the month (I believe) and the last two numbers of the year in the middle of the circle for example "88" for 1988.
Kurt
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1969 SS396 Post Sedan Delivered to Van-T Topeka KS
MCACN Day2 Concourse Gold Award
1965 VW El Lobo Dune Buggy built in the mid 70’s for the Iowa Shriners
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1969 Schwinn Pea Picker
1968 Schwinn 5-Speed
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1972 Schwinn 10-Speed Continental
1973 Schwinn 5-Speed Suburban
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