Your 4777-1 is a universal 650 CFM double pumper. The rebuild kit number is 37-485.thanks,jon. went over and looked again,how about-3342-the primary metering block is stamped-10569-secondary is-6497- under that is 47771-
thanks for any help!
Actually, it's the other way around - carb was built on the 334th day of a year ending in 2 (72, 82, etc.). Through 1971, Holley date codes were three digits (year, month, week), and they changed to four digits in 1972 (Julian day, year). :thumbsup:3342 means the carb was built in a year ending in 3. 73, 83, 93, 03, 13. The following 342 means it was built on the 342nd day of the year. I can't date it any closer than that.