hillbilly pony

I just got the build sheet for my carb and i have no idea what im lookin at. it may as well be in chineese. Here is the way it breaks down.

XC
Main body desc. 780 ADJ SEC BT
Inlet 60 LinkageST
Booster D/Desc 4785EM 28-3p 31uax28-3s
metering block# 11180 FL 451-451a
AF-WD16-40 NS 120
P/S Pump 30/30 Plate# 215-172
P/S sqrtr 40/40

Primary Venturi Specs Secondary Venturi Specs

Baseline lean-rich baseline lean-rich
Main Jet 74 71-77 84 80-86
Hi Air 36-10 40-32 3640-32
idle air 70-10 90-60 70-10 90-60
idle feed 33p33p
PV feed 5543
PV 6.5 PL


PRI JET 74 SEC JET 84


Static Draw Test

200 755 102
250 887 161
300 985 194

mjr46

A 780 is too big for a mild 302 unless it's built to the hilt!!! and even then a 650 to me is sufficient...anyway the oly real important numbers to worry about are jet sizes and a 6.5 power valve is standard but what's your build on your motor for choosing this carb..is it the one in your sig????????

my77stang

a 650 vac. secondaries (and the 650 DP i tried) were both pigs outta the box compared to the cheesy little 4160 holley 600 on my 306 and that thing was nasty

hillbilly pony

mjr it is the sheet for the engine in the sig. I just dont really know what the numbers mean. I had to fill out all of this stuff with pro systems when i ordered it so i have to assume it is good. Can you give me a little learn'n?