Lanny - email or PM  me your snail mail address and I'll send you a copy.  I don't have it set up on my computer


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Thanks again for all of the input.  Sounds daunting!  Over the winter I will work up the two outside carbs, find some linkage, and find a couple blocking plates.  Paul, I would like to get the paper re: load-o-matic and tri-power.

Re the 1-1/16" venturie Holleys. Not sure of the cfm, but I believe they were std equipment on 1956 272" Ford engines.. Other uses?


Paul

3 2s

Lots of information here that’s for sure.
I have a couple of questions.  What is the CFM of a Holly 94 marked 1 1/16? What are the issues I keep hearing about idling problems, is it leakage from the throttle shafts and if so can a nylon spacer or o ring added to the throttle shaft against the base. 

For anyone who wishes to try this on an early Tbird, you should know that hood clearance is an issue.  I had to run screens in my carbs because I couldn't find air cleaners that would fit. 

RE the Offy intake itself.. Offenhauser is of course a storied name in racing.. However, as I understand it, most or all of the Offy Tri -Power intakes were not manufactured by the original Fred Offenhauser's company, but by a nephew of his, with the same first & last names company. A Law suite resulted but the Judges decision didn't really resolve the issue. Fred eventually sold his company to I believe Meyer- Drake & retired.. but to get to the point, if that intake manifold is the same design as the one that our Ted @ Eaton Specialty tested against 6 other Y-Block intakes, it's a poor performer & rated in last place..   


Paul

This is not meant to be discouraging. There’s plenty of reasons to run the tri power on the street, appearance being one of them. Here’s 2 articles from Ted’s site on them. A lot more motor than you’re talking about. The second one, by Joe has some interesting info on the air cleaners most of us have run. Right at the end. Made me smile, I had a set on the Offy manifold on my stock 292 bird years ago.

https://www.eatonbalancing.com/2013/12/18/y-block-ford-3x2-intake-testing/

https://www.eatonbalancing.com/wp-content/uploads/2020/10/YBlock-146-Craine-3X2-Test.pdf



miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

By all means use a 57 and up distributor.  You have to change the gear to yours and the oil pump to a 55 and later pump if you have an early (54) 256 (assuming the later 55 256 is like all the rest 55 engines).  The end carbs must be modified - take out the power valve on the ends and screw in the idle screws if you go with a progressive set up.  Also block off the vacuum fitting on the side (all three carbs).  The block off for the end power valves is available from Holley.  You don't need to run vacuum advance with the later distributor.  Just run centrifugal advance. 

Charlie Price should have the best progressive linkage around.  You might try Speedway to see what they have.  Looking at progressive linkages, I got my own parts and made mine, which worked ok.

There is carb rebuilder named Charlie NY on Fordbarn who is supposed to be one of the best rebuilders around if you want to go that route..
Some time ago  Ted Eaton had  step by step instructions on modifying the early carb for a later distributor.  Might be on his web site.  If not, I have the article if you want a copy.

In addition, I have an article describing how to use a three carb set up using the load-o-matic distributor




54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Your distributor is set up for vacuum only advance. You need one with centrifugal advance also. When you step on it and open the outer carbs, your vacuum drops and the timing changes back to close to what you had at idle. With centrifugal advance your timing stays where it needs to be and your motor keeps pulling.



  Dennis in Lititz PA