Re: How much overbore?

Posted by Ross On 2010/12/19 8:01:24

I fully agree with the theory about the convertor lockup contributing to early bearing failure. In stock trim a 56 will lock up long before I would consider putting a stick shift into high--as low as 25, and that with a 3.07 rear. That would be about 950 rpm.

Food for thought; I'll pass along what a couple of oldtimers told me: 320 owners didn't know what bearing trouble was. Whether that was reduced loading, or another harmonic, can't say.

I'm way too cheap to build up an engine as described and took another route: the Stripper Clipper 55 Deluxe I just got was probably one of the fastest cars delivered by the factory that year--lightest weight, stick shift, and 3.9 rear. She's a lot of fun.