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scicala · 06-02-2019, 05:39 PM

According to my old Holley parts and service manual, the main jets on the 2100 3 bolt two barrel carbs varied depending on which year engine and carb. '52 thru '53 EAB 2100 carbs used a 51 main jet. '54 EBU 2100 Y Block 239's used a 55 main jet. '55 ECG-5 2100 carbs used a 57 0r 59 main jet, and '56 ECG-6 2100 carbs used a 52 main jet. This is all for sea level to 5000 feet above sea level.

Sal

06-02-2019, 05:39 PM	#2
scicala Senior Member Join Date: Jun 2010 Location: Detroit suburb, MI Posts: 3,698	Re: Holley 2100, on 292 According to my old Holley parts and service manual, the main jets on the 2100 3 bolt two barrel carbs varied depending on which year engine and carb. '52 thru '53 EAB 2100 carbs used a 51 main jet. '54 EBU 2100 Y Block 239's used a 55 main jet. '55 ECG-5 2100 carbs used a 57 0r 59 main jet, and '56 ECG-6 2100 carbs used a 52 main jet. This is all for sea level to 5000 feet above sea level. Sal