Which Carb?

[66Sprinter]

Hey,

I have opened up my intake from 1/5" to 1.75". I have an Autolite 1101 carb....

The 1.75" carb opening was stock with the 250 engine. (I think) Is there a better carb for this than my 1101 1bbl?

How about a carb table or list...is there one anywhere?

 

[ludwig]

Check your Ford Six Performance Handbook first. The boys have a lot of carb suggestions and tech stats for you to look at. They even have lists of intake casting serial numbers, especially the ones with the larger valves in the later model years.

If you don't have the book, you need to get one because once you get this done, you'll want even more power. Order it through the Ford Six Shop link at the bottom of the page.

 

[66Sprinter]

I have the book...in St. Louis....

But not with me in Woodstock, Canada. (Weird canadians Eh!)


So I was doing some planning after work in my hotel

 

[ludwig]

Actually, I figured you did because you knew about the 1101. However, there are those new to the faith who have not yet mastered the chatechism and need their own psalter. Eh?

 

[simon]

James,

1101s are usually rated at 210 cfm, the RBS is rated at 215 cfm.

I have both on the shelf (the RBS even fitted with needle bearings on the custom stainless throttle shaft), but I couldn't recommend one over the other.

The RBS has more meat around the throttle shaft bores than the 1101, which was somewhat important to me when I started tinkering with it. The 1101 goes a long way though, not just for retro looks but also for tunability (just spend fifty minutes with some flat steel, a hand file and a drill press to adjust your acc.pump shot)
For the RBS, that'd mean a new (heavier) spring - which you'd have to have made from scratch or find anywhere else.
Seems like jets are far easier available for the autolites, as them 1101s and 1100s use the same thread size as all 2bbl 2100s and 4bbls 4100s found on them V-8 engines.

The RBS also sports a fuel bowl made from stamped sheetmetal for thermal purposes, but the stock air cleaner needs some fabrication to make it fit. I ended up with a stainless kitchen bowl and a neck piece turned from bar stock aluminum to retrofit a '65 air cleaner.

So there you have it - either one is a good and recommendable carb as far as I'm concerned.

 

[66Sprinter]

I have started my rebuild project. Getting components in order and watching the cost rise and rise.

As Mike warned me....if you want a simple six...any $1000 can do...if you want a V8 crate any $3500 will do....but if you want a kick ass 6...

Well start at $4000 and go up....and man..I am there already! No cutting corners and no BS...each component costs if you want to get the best from your 7main beast block!!!!!

 

[66Sprinter]

Simon,

You were posting as I was writing...cool words...so both will work with the larger opening..and your saying no preference for either...just depends on whats in your kitchen??>?

Uhhhh...lemme call the wife and see what we wash dishes in...

BTW...thanks for the help...

Canadian TV sucks..BT....except for this one weird program called LEXX...thats just plain BIZARRO

 

[CZLN6]

Howdy Simon:

A critical part of your decision making process should be what distributor you are using. You mention Petronix in your signature, but not which distributor it is in.

IF it is a Load-O-Matic I'd suggest at 1101 from a '63 or '64 full size Ford car with a 223 six cylinder engine. It will have a SCV for a correct vacuum signal to the L-O-M distributor.

If it is a '68 and later type distributor you can still use an 1101 from a '69 Mustang 260 engine. Both the 1101 and the RBS had the correct ported vacuum tap for the later distributors.

Another difference with the RBS is the throttle linkage is set up for a cable across the top of the valve cover.

How's that for some more stuff to think over. Both carbs are hell for reliable, Both are suseptible to dirt and crud. Both have a relatively weak accelerator pump system. Both can be susceptible to percolation and hard starting hot. Both can benefit from a cold air intake and sheilding from engine heat.

An excellent resource for vintage Ford carbs is the "Ford Carburetor Guide" by Pony Carburetors, Inc. It sure save a lot of time looking through old service manuals.

Adios, David

 

[66Sprinter]

Hi David,

Thanks for jumping in. I have the original 66 dizzy that came with the engine. I just added the Pertronix to it.

I did call Performance Distributors and Mike and would like to upgrade to the DUI.... The guys there said to give them the cam, lift and dura, along with carb info so they can set the dizzy curve.

So I was wonderin if my 1101 is OK for the larger bore. Or if I need a different one.