880 sbc block 4 bolt main install?

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Schurkey
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Re: 880 sbc block 4 bolt main install?

Post by Schurkey » Sun Nov 11, 2018 10:53 pm

pdq67 wrote:
Sun Nov 11, 2018 3:34 pm
How about using an 880 block for a long rod, 3" stroked engine?
Short cylinder shouldn't make a bit of difference with a short stroke.

I think you could do a lot worse. 'Course, an aftermarket Dart block at 4.125+ bore would be even more fun.

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Re: 880 sbc block 4 bolt main install?

Post by ProPower engines » Mon Nov 12, 2018 2:52 am

I have done a 3" stroke 6.22 rod in an 880 block still going strong after 9 years.
The blocks came in both 4 bolt and 2 bolt mains. Mercury marine used then for the 6.2 Lt marine engine and I have seen them in both 2 and 4 bolt versions and they have no issues. They are a very heavily loaded engine in a larger boat they get used in and run at 3800-4200 all day long under load with cast pistons and PM rods.

Using steel caps makes the block stiffer and allows more power to be put to the crank without the caps flexing. Makes a tidy street engine or moderate race engine package.
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