71ChargerRT
Well-known member
I have a set of 318 or 360 rods with pistons still installed you can have, if you want.
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- Thread starter 71ChargerRT
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Dr.Jass
Pastor of Muppets
It does not. The only difference in the 360 is the bottom of the block, with larger main saddles since the crank has larger main journals than the 273/318/340. If it had a taller block height, the intake wouldn't interchange with other LA engines.
273 and early (pre-'71) 318 rods won't last in a high-horsepower application. They're too small and spindly, which is why the 340 had the bigger rods from Day One. That was the whole reason they went to the later rods across the board--rather than have two different forgings they just put the 340 rods in everything (although the 273 never got 'em). For economic reasons, they were not bushed for floating pins in the 318 and 360 applications. I'm sure they'd last in a stock 340, but Chrysler knew that engine was going to be raced, built up, etc. The other problem with the early rods is it completely screws up the balance of a heavy-rod engine. You'd have to add mallory metal to the crank to make up for the lack of connecting-rod weight.
273 and early (pre-'71) 318 rods won't last in a high-horsepower application. They're too small and spindly, which is why the 340 had the bigger rods from Day One. That was the whole reason they went to the later rods across the board--rather than have two different forgings they just put the 340 rods in everything (although the 273 never got 'em). For economic reasons, they were not bushed for floating pins in the 318 and 360 applications. I'm sure they'd last in a stock 340, but Chrysler knew that engine was going to be raced, built up, etc. The other problem with the early rods is it completely screws up the balance of a heavy-rod engine. You'd have to add mallory metal to the crank to make up for the lack of connecting-rod weight.
Stretch
Hey! There’s no easy button for a body like this!
Ok well i didnt think the 360 intakes did interchange. I guess I was wrong across the board. Now that I'm clear on the deck height it all makes sence. I did know the "small" end of the rods was the same and could be bored to make floaters.