dadodgekid
When in doubt... floor it
Specifically the 4.250 Stroke for a B deck engine. Anyone use one or have hands on experience??
440 Source lightweight crank shaft
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Dartn440
Well-Known Member
I went with it in my 512 in the 72 Dart. Still breaking in the motor. So far no issues.
jbc426
Well-Known Member
I have been running one for over 7 years at or near the 700hp level. I like the quicker rev, and I'm hoping the lighter weight helps the stock block last. I had the motor apart to lower the compression and address some valve train instability issues I was having, and there was zero signs of cap walk. I do run a Hughes girdle on the thing.
My Ross pistons weigh in at 524 grams with pin. Not sure what the bob weight is with the 7.1" Chevy journal rods, but the thing spins up in an instant.
dadodgekid
When in doubt... floor it
Very cool, Fit and finish was nice??
jbc426
Well-Known Member
It's beautiful. Very impressed. People don't realize that some of the most modern, automated and efficient steel mills in the world are now in China. I would still have everything checked, measured and balanced before you throw one in a motor.
dadodgekid
When in doubt... floor it
Oh for sure. Im a bit OCD when building an engine. Thank you for the input!
Dartn440
Well-Known Member
Same as above. I bought the entire assembly from 440 Source and took it all to the machine shop as I bought the unbalanced and had them check everything and balance.
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