I am wondering what engines I have recently acquired. They were in the back of an old shed for years. The tag on one says: 429 69 4
and the other says: 429 70 6
Any help would be greatly appreciated!
Probably just a run of the mill pillow barge smog motor. Perfect for a minor rebuild into a 700 horse mountain motor. Get to work!
Actually some numbers aren't adding up. A C9VE block would be a huge surprise on a 73 motor. It should have a D1VE block.
And you can't use casting revision numbers to determine where it came from. Just because it has the V for Lincoln does NOT mean it was ever in a Lincoln but rather that the ORIGINAL use of that engine group was for a Lincoln
BUT the ACTUAL decoding on that engine tag indicates it's a 69 429-4V.
AFAIK those would have been 11:1 compression engines, T bird, Galaxie or Mercury land yachts.
Does it have a 4bbl intake and the words "Thunder Jet" on it anywhere?
The Lincoln connection would be that the 429 and 460 blocks are the same, with Lincoln using the 460 at that time.
As I said earlier, since they have been sitting and since you don't know the condition, a tear down would be a good idea. Also, they probably do not have hardened valve seats unless someone did that later, and with 11:1 compression, they will be hard to please gas wise.
There were Mercury 2bbl 429s, not sure if they found their way into Fords. The Marquis had one as the standard engine. Supposedly the same specs and a "Premium Fuel" engine with the same compression as the 4bbl.
The insurance man would relax if you had a 2bbl, but panic with a 4bbl.
Also, I see 11.3:1 compression referenced for the "Thunder Jet" motor, a figure I recall hearing years ago when these motors were new.
Serving suggestion for that concours restoration you might consider: