3310-3 jets /shooters /etc
so I will be rebuilding my 750v/s carb to use on my 350 crate engine..
it's a 350vortec crate with the g.m. ramjet rooler cam and 1.6 rockers
it's a 9.4 to 1 with
cam The duration at lash point in degrees (intake/exhaust) is 288/308; duration at .050" tappet lift (intake/exhaust) is 196/206 and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 431/451. Valve lash is zero/zero and lobe centerline is 109 degrees.
the lift will be e.460 I .481
Now I'm a q-jet guy and will be try'n that out also as the edle rpm intake
is drilled for both..
but I have no idea where to start with jetting and such on the holley..
both ends have metering blocks..
the rest of the vehicle is
3.08 gears 26" tire with as of now a th350 with stock(guessing) stall and will move to a 2004r with 2400 stall
I know only an a/f gauge and /or track testing will get me on the money.. but I'd like to be somewhat close to start..
the q-jets will be a 74 chevy truck 350 and a 73 pontaic 455 j-jet
timing I'm going to start with the ramjet specs.. and go from there Ignition Timing: Base 10 degrees BTDC, 32 degrees total
Start with the "stock jetting" stock for that carb is 72 pri and #21 sec metering plate.
a 70 to a 74 primary jet is typical 80 to 85secondary jet is typical.
Work within this range.
usually you end up with a 70 or 71 or 72 primary jet in that carb.
The Proform 750 HP carb body kit for the 750 vac sec carbs (3310) is a nice upgrade.
Downleg booster more flow, more response, adjustability, tuneability. but no choke
You can swap to a secondary metering block or get a secondary metering plate that takes
standard holley main jets or modify the one you got to accept screw in jets.
Get some gears for that pig (4.10's) especially if you are going to a OD trans.
Thats what OD is for. OD and 3.08's is useless.
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