lincnman

Hi all, i have a 1971 Linc Mk lll 2dr the guy I got it from put a 72 429 in it out of an LTD Station wagon,Anyways the carb is missing and it has a 70's edel brock manifold old style street masters the inlet has adjustable bolt holes for differnt spread carbs and the inlet is square with no seprations just a square hole can i put a motorcraft/autolight 4300D 4V carb on this,(what is the cfm)will it work? The carb is of a 1973 lincoln continental with 460 eng
thanks

Paul Kane

Not sure of the cfm of that 1973 carb but I think it's around 600 cfm. It ought to fit the edelbrock single pane intake. If you can mix match parts and the engine runs fine then go ahead...unless there is an emmissions testing issue. Adjust timing/fuelmisture as needed (not likely a necessity in a bone stock applicaton, but check plugs for mixture).

I'm not a fan of the Autolite carbs...might want to try a Holly 600 or 750 cfm. Also, careful with the 1972 engines as they have a single year only cylinder head, the D2VE casting. It's an open chanmber head and can be detonation prone in performance applications. In a stock passenger car application you'll be okay but may need to run fuel with an octane rating better than today's regular fuel.

Paul

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lincnman

Thanks for the info i'm sure i'l make it work.Bythe way do you know how i can tell if this is a 429 or 460 would the casting numbers tell me? just trying to see if it really is a 429 or 460 and the year of the motor.

Paul Kane

The 429 and the 460, on any given year of production, use all identical parts except for the cranksaft (stroke) and psitons (pin location). So other than the crank and pistons, all the parts are the same for any given year. Therefore, the external appearance leaves almost no clue for verifying engine displacment if the engine tag is gone. If your engine is installed, it's pretty hard to identify displacement except for maybe measure the stroke though a spark plug hole with a piece of straight wire.

Other ways to evaluate whether you have a 429 or 460:

One way is to flip the motor over and unbutton the pan. One of the crankshaft countrerweights has alphanumeric markings stamped on it's edge, and these markings identify whether it's a 429 or 460 crankshaft.

429 = 4U, 4UA or 4UAB

460 = 2Y, 2YA, 2YAB or 2YABC....or 3Y or 3YA.

Example:



Also, for quick identification of the crankshaft, you may look for the nodule or embossment between the first main journal and counterweight. The 460 is embossed there, while the 429 is not:

429


460


Paul

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lincnman

Thanks for all your help I do have one more problem I noticed someone took the starter off the engine I did get the correct starter,but have no bolts.if i knew the grade, thread style,length and size,, I could get some do you know? or know where i can get this info?

thanks

Paul Kane

I think they are 3/8-course (3/8-16). I think they are 1-1/2 inches long. Any grade bolt will do (Grade 5 & up).

Paul

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