Quote Originally Posted by DennyW
4150
4777-5
650 cfm
4150
4777-4

front=67, rear=73 or 76
power valve=6.5

R4777-5=part number
4150=carb model
650=cfm
37-485=renew kit
37-933=trick kit
6-504=needle and seat
122-67=primary main jet
122-73=secondary main jet
34R8539-5AMP=primary metering block
34R6497-3AMP=secondary metering block
125-65=power valve
0.028=pump nozzle size primary

That's what came in the 4777-5 carb
This carb has been Jetted for a BB chevy so I'm sure it's all wrong!
I've not tore it down yet so I don't know what's in it now but I'm sure it's all wrong ( being set up for a BB) and I'm just looking for a good starting place For my vortec 350