I've made a mistake, I'm rebuilding a Quadrajet , (GM 1966-74 4001B) and I have apparently lost the Power Piston Spring. I swear I never even saw it. I can buy a new one for the low, low price of $9.50 plus $7.50 shipping, or... What I'm hoping is that someone has one laying around that can measure it and I'll go find one at NAPA for $3!!!
Any help would be GREATLY appreciated.
By the way, the carb is off a '73 Firebird. The truck has a 400 Pontiac engine in it.


1959 Chevy Apache
1955 Chevy 3800