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Re: Minnesota Daily Driver
Once I got inside of the 400SB I found that some body had replaced a head at one point so it had mismatched heads. One side had the 1.720 intakes and the other had 1.940. I measured all the wear surfaces and found the block & crank to be in pretty good condition. So I tore it down completely and brought it to the machine shop. The blocked was bored .020 and the mains .010.
I found a matching set of 1.940 heads and drilled steam holes in them. I installed a towing and R/V cam and reassemble the engine finishing it off by repainting it the factory blue:
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