This?

Holley 4160 Vac Secondary 600 cfm

or

0-1850S

I used one similar on my 65 Acadian. I'm trying to remember the number. I think it was a 40857. It's a 600 vac secondary. It worked great on there, the little bit that I drove the car before I sold it. The new buyer told me he drove the car a fair bit this summer and it runs great, so I'd recommend that.

1850 was a Universal Holley      

 

 

 

 

I personally only use Edelbrock replacement carbs

This is like asking what kind of spray gun is the best :)

Hard to beat the Q-jet for all around economy and performance. Even a badly tuned Q-jet runs. Here's the key - have someone who knows Q-jets rebuild them for YOUR application. It makes all the difference in the world and believe me I've tried many times with the best intentions to rebuild them myself. I finally gave up and now send them to a shop specializing in Q-jets. Bingo - we have bush. It's not a tinker yourself kind of carb imo for rebuilding but tuned it will go a long time without having to mess with it.

Personally I'm not a fan of Holley carbs. I've had many on cars and it always seems like I'm constantly adjusting them. A plus is they are very simple to work on/rebuild I guess. I've bought them new, used, rebuilt them, and had them built with so-so luck. Maybe I'm jinxed.

Edelbrock (AFB based design) carbs are good but the fuel economy isn't great. Probably not important for most people. Only had one but mine ran good out of the box on a 350hp 350 and was reliable. If you have a stock Quad manifold and have to use an adapter plate - don't! Mine ran poorly when I put it on another engine with the adapter plate and was only better after changing manifold. Easy to tune but the one I had you couldn't tune for a smooth transition onto the secondaries. It had slight WOT bog that drove me crazy.

Just my experiences so far......

I take it you havent had the carb off yet....If you look, there is an adapter under that carb. It is likely the the stock 327 manifold that takes a Rochester 4 jet carb...early 4bbl with smaller venturies than the Holley. Any Holley or Edelbrock (Carter) square bore carb should fit that adapter....but, if it were me, I would look for an Edelbrock Performer manifold and lose the adapter. Adapters tend to make carbs do strange things in my experience

or    install a nice  Q-Jet        

 

Heres a Q-Jet idling 2 min,   after firing up,  after sitting 6 mo...

 

 

 

https://www.youtube.com/watch?v=QXqXzAAwbvw

-- Edited by 427carl on Saturday 3rd of January 2015 10:37:35 AM

i do have a spare square 4G off a 327 that does need a rebuild

.....Quadrajet would be my choice for that manifold.

Johnny Ringo wrote:

---

.....Quadrajet would be my choice for that manifold.

---

 Quad wont fit on that manifold if its for a 4 jet.......you will have take carb off to see what you have

Looks like Johnee has a Squarebore carb with an adapter for a spreadbore Qj manifold.

Maybe you should check with George Kennedy before you make your final decision!!

Thanks
Randy


www.youtube.com/watch

Here's some pictures. Forgot to mention...electric choke.

-- Edited by HonestDave on Tuesday 6th of January 2015 07:31:11 AM