All Small Six 4bbl carb on stock 200

[chipowers]

Hey everyone, sorry if this has been posted before but I couldnt find it.
I’m looking at buying a 4 bbl carb for my stock 200ci. Whats the best way to convert it from the autolite 1100? I’d be a sniper. I am not looking at making power gains, but instead buying the carb I will (hopefully) need in the future.
Thank you!

 

[wme013]

You can't put a 4 bbl carb on a stock 200!! Well given enough time and money you can, but of no value. Get the correct head and intake first then the 4bbl is easy later.a

 

[pmuller9]

The intake manifold is cast as part of the head and only has an inlet for a one barrel carburetor.
There is a one barrel Sniper or you can get a two barrel to one adapter and use the two-barrel Sniper.

There are a few here that have machined the intake to fit a two barrel directly without having to use an adapter.

 

[powerband]

"... buying the carb I will (hopefully) need in the future."

... theoretically you could stack two carb base adapters - 2X1 and 4X2. Finding a suitable 4Bbl with low CFM spec and 200 Six compatible would be the challenge.

... not sure why your 200 would need a 4Bbl in the future ! - ?

the Holley 2300 - 2Bbl is popular and widely available in 350CFM and 500CFM versions, jets and parts same as a 4bbl. Briefly used the 500CFM on a stock 170 with eye watering over-rich results ...

the Weber 32/36 \ Holley/Weber-5200 is a mechanical Progressive 2Bbl also popular and offers improved tuning capability over early 1Bbl's. Primary barrel used on low speed/cruise and has the "4Bbl Effect" when Secondary barrel opens.

Best performance and mileage is usually at the stoichiometric air to fuel ratio (static) , with 14.7:1 being the perfect value determined for pure gasoline.




Have fun


...did use a Turbo specific Quadrajet carb on a stock 250 cid Draw-Thru project . Built for V6 Buick/Olds/Pont. the Draw-Thru setup needed 950CFM at WOT. Ran good til' pistons gave out.

' .