Interesting Photo...

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Originally Posted by FUJIMO

..they made decent low cost scuba diving boats though, cause of all the room inside. yeah, they were fugly.

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And that Tri Hull beat the crap out ya..

http://www.quincylooperracing.us/ima...eanYamatoD.jpg

https://4.bp.blogspot.com/-yjfz1umRX.../s1600/33b.jpg

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Originally Posted by Robby321

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My father was an apprentice at Grey Iron when the 396 was being developed as a "marine motor" sh*t in the valve train doesn't even point in the right direction, how that pile of junk became ballyhoooed as one of the greatest motors of all time is way beyond me.

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Originally Posted by Capt.Insane-o

My father was an apprentice at Grey Iron when the 396 was being developed as a "marine motor" sh*t in the valve train doesn't even point in the right direction, how that pile of junk became ballyhoooed as one of the greatest motors of all time is way beyond me.

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...so true. as you know, they morphed into the 427, 454, & so on, over the years. you would have thought GM could have fixed all those decades of bad valvetrain production. nope! as they came from GM, a large percentage failed. particularly the ones that were marinized by marine engine suppliers in stock form. it was up to the customer to spend the bigger dollars to upgrade with an aftermarket valvetrain. ridiculous. sustained 5,000 rpm? hell no.

Twin Kawasaki 1200cc motors mated to a single crank.

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Honda NR750 oval piston

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Originally Posted by Robby321

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Originally Posted by Robby321

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I wonder what kind of boring/honing machine they used.

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Originally Posted by Robby321

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Got picture of the boring bar for that slug?:D