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Old 01-22-2012, 09:21 PM   #21 (permalink)
Ecky
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Quote:
Originally Posted by Old Mechanic View Post
Always a trade off in reciprocating engines. Longer rods and longer stroke generally give you more torque at lower RPM, but also increase reciprocating mass which will reduce efficiency.

I think the 225 Chrysler slant 6 had a 3.5 inch bore and a 4.5 inch stroke.

regards
Mech
After some reading, I'm guessing the reason the Slant 6 was a... well, Slant 6, was so they could make it extremely undersquare to develop a lot of torque at low RPM, efficiently, but also have long enough rods that the rod:stroke ratio wasn't too poor (and thus causing excess friction, and bending rods all the time), yet still fit under the hood?

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