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Big Cube 226

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Conley707 View Drop Down
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Joined: 24 Jul 2022
Location: Michigan
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conley707 Quote  Post ReplyReply Direct Link To This Post Topic: Big Cube 226
    Posted: 24 Jul 2022 at 4:32pm
I am sure it has been talked about before. But what are some of the bigger 226 builds out there? And what is to big?
We are pondering the idea of a 485 cube.
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2022 at 4:41pm
Let us know how that works out. I've heard of some in the 440 cube range and also heard they maybe don't last all that long. Both will require custom rods or rods much smaller in diameter on the crankshaft end. Bore max for me is 4.630" and the block eventually splits down the middle.  I've gotten by for years at 390+ cubes with a ton of compression.
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Conley707 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conley707 Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2022 at 6:18pm
One concern is can i feed that kinda cubes with a leroy head. We cant run custom intakes or heads in D3 as of right now we are going to try 4.875 by 6.5.
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2022 at 6:58pm
Don't know how you'll ever get a 4.875" bore unless the LeeRoy block is better than a D-17 block.
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Robacpuller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robacpuller Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2022 at 8:44pm
4.600 bore, 6.250 stroke.
Mine is 4.600 bore 6 inch stroke. A lot of air flow work.
Really good cam. 290 lbs of compression low 120's for power.
18.4 x 34 tires
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d17brown View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d17brown Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2022 at 8:32pm
had a 429 cubed D17, not much room left. just saying
phil
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Post Options Post Options   Thanks (0) Thanks(0)   Quote allispuller45 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2022 at 8:16pm
You cant make one that big. We have a 226 that is has been bored and stroked to 419. and it is about the max you can safely build one in my opinion. 
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cms View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cms Quote  Post ReplyReply Direct Link To This Post Posted: 07 Dec 2022 at 9:04am
450 is possible, have a 426 in shop for freshening up that can be bought.
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Conley707 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conley707 Quote  Post ReplyReply Direct Link To This Post Posted: 07 Dec 2022 at 10:09am
What's the info on that engine?
 
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NEVER green View Drop Down
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Joined: 28 Feb 2013
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 07 Dec 2022 at 11:00am
If you filled the water jackets with liquid cast would that help strengthen the block??
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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cms View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cms Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 2022 at 8:12am
The 426 is 4.625/6.3125. the 450 was 4.75/6.25. The 426 was easier to keep running. The 426 is built inside a 201 block. Have plans on going to 6.375 on the next build and keep a nice size journal. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 41wc Quote  Post ReplyReply Direct Link To This Post Posted: 27 Dec 2022 at 7:23pm
How are you keeping the mains intact and not tearing themselves out of the 201 block? I do not mean that sarcastically, I have one I’m trying to figure that out on right now. I’m assuming billet main caps, but I’ve been warned that my 391ci is going to pull the mains out. 

Edited by 41wc - 27 Dec 2022 at 7:24pm
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