I have a 1974 2 door w/ a 472 that started knocking after it overheated. How easily will a 1967 429 longblock fit in its place? I can buy the transmission as well if it is needed. Will the accessories fir (i.e.AC)
:banghead:

I have a 1974 2 door w/ a 472 that started knocking after it overheated. How easily will a 1967 429 longblock fit in its place? I can buy the transmission as well if it is needed. Will the accessories fir (i.e.AC)
:banghead:
The 429 is a completely different engine. I'm not sure how difficult the swap would be but I'm sure you'd need all the accessories and brackets from the 429 and some custom fabrication might be needed too.
Over-heating alone shouldn't cause an engine knock. Any idea exactly what the problem is with the 472?

Myson bought this car from a 92 yr old farmer who couldn't drive it anymore. It had 150,000 miles on it, and supposedly he used to drive it round trip to Florida.
On the way to college this fall, after 60 miles, it overheated from what I believe was a stuck thermostat. I let it cool down, and then refilled it with a 50% Prestone mix. The car went 7 miles and overheated again. When it cooled down the second time, it was knocking. My mechanic tell me it is knocking down low near the firewall. Could be a spun crank bearing.
As a college student, my son just want it fixed cheap.

to answer the origanal question... the 429 isn't a good replacement....

a good replacement would be a blown 500, dual carb. pushing 800+ hp from MTS

a realistic engine would be, rebuild the 472, or find another 472/500..... switching to a 429 would just be too hard and too difficult.... stick with the big guys :)

Do you have a recommendation of a good place to get various repair kits like crank bearings, rods, pistons, rings, and gasket sets? I am just trying to determine the cost of an inexpensive rebuild. My son can't afford to blueprint the engine.:)

Thanks

Get a 472 or 500 from a good running donor car and swap it. I'm sure you could find one cheaper and quicker than rebuilding a motor, if money is an object. 1974 was probably the worst year for these engines, they were choked down by smog regs.

429 would not be the way to go, they are older, heavier, and harder to get parts for.

Also, in northern areas, these cars tend to rust out rather quick, leaving an ugly/unsafe car body and frame, decent interrior, but a perfect running, <100k mile 472/500 under the hood. You can find it either in someones yard or at the junkyard, probably be cheaper just to buy the whole car then yank the engine... if you are lucky and find a formal limo in the junkyard, there is a good chance that it was used for service, meaning they were on a strict maintenace schedual and work was done on time, that would be the way to go.

when I go to get my 472/500 (prefer a 500) if i have a choice, I would like to pull one from a limo, or one that seen that kind of commercial use. Isn't like carrying around 7 or 8 people was any stress on these things anyway.

I bet you could find a junk yard engine, or a car heading to the junkyard for about $300, then swap them over and you are good to go.

Dear Night Wolf,

I took your advice and bought a complete longblock form a 1969 late edition (end of the model year) 472 engine for $156.00. Will swap out this weekend, and will keep my old heads for the next owner.

Thanks