General Category > Quadrajet Carb Talk and Tips

What Jets and Rods?

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huntincowboy:
Hi everyone, new here and completely new to carbs! I have a 1990 F250 with a F.I. 460 that I am in the process of converting to carb. What I've decided to do is swap the heads and intake for stocker setups off of a '76 Lincoln. (D3VE heads, spreadbore intake with the 4350 pattern).

I've chosen the quadrajet for my setup and I've bought Cliff's book about rebuilding them. It has a ton of great info on them, but I have a question. My quad came from a 305 chevy engine and as far as i know was never used on anything else. I'm rebuilding it now, but I either didn't notice a section with recommended metering rod and jet combinations, or it wasn't there. My number on the Quad is 17084226. I've got it down and ready to go back together once I order my parts. What would be the recommended setup for this? I'll be running true duals, long tube headers, a mild cam (comp 252H) and that'll basically be it. 

My other question, does anyone know if there exists an adapter to go from the 4350 spreadbore to the quadrajet pattern? I see lots and lots of adapters to go to holley squarebore for either, and if there isn't one to go straight to quadrajet, could I take a 4350 to squarebore and then quadrajet to squarebore adapter and braze them together?

Ethan1:
 Welcome to CHP!

 Is that carb a sing main air bleed or dual? Look on page 32 of Cliffs book. There it will show you a SMAB and a DMAB QJet.

 You may want to talk to Frank400 on here about the 4350/Qjet adapter.  8)

huntincowboy:
Looks like it's a single

Ethan1:

--- Quote from: huntincowboy on March 24, 2017, 01:27:40 PM ---Looks like it's a single

--- End quote ---

 I would go with recipe 1 and use 52M primary metering rods and it all depends on the size of the MABs, on what size jets to use. Secondary metering rods CV or AU will work. K or higher secondary hanger.

carmantx:
Looks like a single main air bleed at .080.
Had 73 jets and 49Y primary rods based on my records.

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