PDA

View Full Version : Jet change vs A/F ratio

61ragtop
08-01-2011, 01:28 PM
As a rough rule how much does a jet change the a/f ratio on a sbc?
GregWeld
08-01-2011, 03:22 PM
about .5 per one jet size but there is no "rule" really because it all depends... size of carb per cubic inches - vacuum signal - etc
61ragtop
08-01-2011, 04:31 PM
about .5 per one jet size but there is no "rule" really because it all depends... size of carb per cubic inches - vacuum signal - etc

Thanx Greg, I just needed a rough idea so I can but some jets to deal with my other post about tuning my A/F ratio on my carbed 383sbc.