Anyone what the equalivant jet size the stock metering plate is on a 3310?

Chris

holley had an application chart up at their website but the link seems to be bad now.

http://www.holley.com/HiOctn/ProdLine/Products/FMS/FMSCA/MtrPlate.html

looking in my book i dont see any conversion chart or anything, but the 3310-2 and up use a number 21 plate, which has a .081 main hole.

looking over at the jet chart shows a number 74 with a .081 orifice.

Brandon,thanks for the info graemlins/thumbsup.gif

no problem, you doing some tuning?

for comparison im using 73/80s in my 3310-1 with 10.5 powervalves front and rear.

assuming no secondary powervalve i think somewhere between 80-85s in the back would be perfect for your combo.

let us know how it goes graemlins/thumbsup.gif

Brandon,thanks for the input.
Time to dive into the carb,maybe squeek a little MPH gain.
My 3310 is all stock for now,other than #74 primary jets and the tall yellow secondary spring.
I'll be adding the secondary metering block and #80 jets (no sec. power valve) and see how it goes.Track doesnt open until April though :(
Raceway Park in NJ will be open in Feb. but the ride there sucks.

FWIW the Holley 4160 to 4150 secondary metering block conversion kits come (a couple years ago anyway) with #76 jets. Without a secondary power valve and no way to install one in a conversion metering block, you'd think the jets would be bigger. 4150/3310 Holleys with a secondary metering block AND POWER VALVE come with #76 sec jets. And you'd think the 4160/3310 with sec metering PLATE and no power valve would have bigger than .081 main orifices (equiv #74 jet size) but they don't. I don't get it. I put #84 sec jets in mine.