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Discussion Starter · #1 ·
will 700 cylinders bolt up to 440 cases if so what years cylinders on a 05 440 motor any help on this matter would be greatly appreciated
 

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they will...if you machine the lower ends to fit. There was a sled magazine years ago that did it.
 

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I dont think so. I think you have to put small block cylinders on it. small block 600 cylinders will fit. Stroke is dif so they have to be machined anyway. Then bore them to 700cc (660) or 800cc (797)...its a pain in the @$$ really. You'd have less time and money into a small block motor from ebay.
 

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No they will not.

700 is a big block, newer 440's are small block

In my garage right no I have am 07 440 engine, '98 700(bored to 86mm) cylinder, 440HC head and an 800monoblock twin cylinder. None of these parts are interchangeable.


As far as what Zippi said, he is close. You can bolt 600 cylinders onto your 440 crank/crankcase IF you machine the cylinders or case a couple thousandths to account for the 600 crank being a slightly longer stroke than the 440. You can also bore the 600 cylinders out to 660, 685 or 727

726 engines are the old polaris mod castings and porting
727 is SLP's version of the 726(they bought the casting rights from polaris), it's ported a little slower and safer than the 726 so it's pump gas compatible.
797 engines used custom (usually one off) stroker cranks and the 726 cylinders
 

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Discussion Starter · #5 ·
so what all needs to be done for 600 small block cylinders to be put on 440 sb cases? do i need a 600 crank?
 

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No, you can't just drop 600 cylinders onto a 440 base.

You can either run the 600 cyl's and a 600 crank or send the crankcase or cylinders off to a sled shop to have them machined to make up the difference.
 

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We sold a 726 a couple years ago that was based on a small bottom and the big top. Pro-5 out of MN built to years back. Man, was that thing fast with pipes and all race porting.

Called Pro-5 and they asked, 'How did you get that?' Ha. They didn't want anyone to see it and what they did. I guess they built it for Polaris Race Team.
D
 
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