What Jets and Rods?

[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. 

[huntincowboy]

Looks like it's a single

[Ethan1]

Looks like it's a single

 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.

[Ethan1]

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

Thank you!

Then he would need .075" jets.

[Cliff Ruggles]

I've actually done that swap onto a later fuel injected 460 using an early 460 iron intake. 

We can discuss the details when you call to order parts, etc....tks...Cliff

[huntincowboy]

Thanks! I'll call and get with you guys to get the right parts ordered. I'm pretty excited to get this build rolling!

[429bbf]

fwiw i played with that setup of trying to put a quadrajet on a ford spread bore on a 460 . nobody builds anything that i could find that is not difficult to work with . for me the best option was to buy an edelbrock  7166 intake and the quad will bolt right on . it has both bolt patterns . hths