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Old 10-28-2012, 08:25 AM
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i am in no way trying to dislodge, discredit anyone but my general consensus ,at this point, is until there is further solid proof otherwise, the 90 degree v-6 engines have identical bore spacing with the 8 cylinder blocks.

i base this upon several things:

1) Gm themselves have stated this in writing in many places. One example is above.

2) If, let's say, a common pin crank is put into a stock 4.3 engine, then what needs to be done to the block? Specifically concerning the cylinders?

Note, my intention of the discussion at this point is not to discredit, but rather to learn more about this engine.

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Old 10-28-2012, 09:20 AM
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It does seem my memory of the bore spacing of the 4.3's was in error. While I focused on the off-set rods due to the split crankshaft design,I did forget the block casting. It has been about 15 yrs since I was in that deep into the very expensive Bowtie block and the research for the same with many SBC/BBC's engine in-between. Yeah we do buy/sell a bunch of that.

Well I have always told myself it takes alot to admit a mistake. Sorry guys..............
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