I just bought a 1973 460 out of a 1973 motorhome that has only 63,000 miles on it. What are the odds that this engine would have a 4 bolt main? I am going to re ring it and put new bearings and gaskets in it since the seals are probably getting pretty old anyway. Should I put a cloyes timing chain in it and run it 4 deg advanced or run it straight up? Don

 

The only thing i think you may find different from a car engine is the connecting rods. You should have the stronger foot ball rod bolts in the rods. Can't help with the rest.

 

it will not have a four bolt main. the only put those in some 429 cobra jet blocks and the 429 boss. only way to tell on the cobra jet is to pull the oil pan and on the boss youll know it when you see it.

 

The CJ motors were only 2 bolt mains. The SCJ got the 4 bolt mains and of course the Boss429 which had a little extra. I was unsure of ford ever put them in anything else.

 

the 427 cammers had six bolt mains! thats crazy. a 460 stock bottom end, 2 bolt main, can handle a lot. i think its 600+ hp or close to it without a problem.

 

only thing i know of the boss went into was the mustang and for race engines

 

all the 70 429 scj and 71 late r 429 cj and scj were four bolt mains, and d7te and d8te were 4 bolt mains.

 

I have never seen a CJ 4 bolt but I guess they are out there. Are the D7TE and D8TE blocks truck blocks? What did they come in? bob

 

yeah the d7 and d8 blocks are truck blocks, that would be 2 tons and dump trucks.

 

Are those 460 motors or are they 370 motors?

 

those are 429 engines.