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Boring 413 to 426 ???
#169959
12/18/08 12:59 PM
12/18/08 12:59 PM
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Joined: Aug 2006
Posts: 2,535
God's Country Maryland
GODSCOUNTRY340
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Posts: 2,535
God's Country Maryland
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I've got a '64 413 HP block and was wondering how many of you have bored your 413 out to a 426 cid, any problems? Thanks.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Boring 413 to 426 ???
[Re: 62maxwgn]
#169962
12/18/08 01:55 PM
12/18/08 01:55 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
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Posts: 25,200
Upper Midwest
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Quote:
Truck block yes,standard 413 no unless its Max Wedge block.You need to bore .125,thats 1/8",too much in my opinion.Not saying it can't be done but I wouldn't do it. 
I don't know where you got your math but when I went to school 4.18 from 4.25 was .070.
To answer the question Many 413's were bored to 426 spec's long before sonic checking was heard of and lived.
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Re: Boring 413 to 426 ???
[Re: MoparforLife]
#169963
12/18/08 01:59 PM
12/18/08 01:59 PM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Quote:
Truck block yes,standard 413 no unless its Max Wedge block.You need to bore .125,thats 1/8",too much in my opinion.Not saying it can't be done but I wouldn't do it.
I don't know where you got your math but when I went to school 4.18 from 4.25 was .070.
To answer the question Many 413's were bored to 426 spec's long before sonic checking was heard of and lived.
If you were as old as I,maybe you would forget.You bore yours at what you want and I'll do the same. 
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Re: Boring 413 to 426 ???
[Re: MoparforLife]
#169968
12/18/08 05:16 PM
12/18/08 05:16 PM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Quote:
Quote:
Quote:
Truck block yes,standard 413 no unless its Max Wedge block.You need to bore .125,thats 1/8",too much in my opinion.Not saying it can't be done but I wouldn't do it.
I don't know where you got your math but when I went to school 4.18 from 4.25 was .070.
To answer the question Many 413's were bored to 426 spec's long before sonic checking was heard of and lived.
If you were as old as I,maybe you would forget.You bore yours at what you want and I'll do the same.
Very likely as old or older. Was there & twisting wrenches when these engines were pretty common.
I was there before they made them !
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Re: Boring 413 to 426 ???
[Re: Supercuda]
#169971
12/18/08 06:50 PM
12/18/08 06:50 PM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
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Blair County,PA
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Quote:
Quote:
I was there before they made them !
Then you must of forgotten that a .060 over 413 is only .010" smaller than a stock bore 426.
Ran plently of .060" over 413's with no issues and another .010" will not make a difference.
BTW, an eighth of an inch is .125".
and two times that makes a quarter.
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Re: Boring 413 to 426 ???
[Re: ScottSmith_Harms]
#169972
12/18/08 07:59 PM
12/18/08 07:59 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
Yes, as long as it passes the sonic check you shouldn't have problems with most blocks, I have one that I had bored to 426 (1959 casting date passenger car block) and it passed the sonic check with flying colors, no problems, the thinnest spot was 170 AFTER it was bored, most mearurements were still over 200.
Agreed.
I have a 61 413 block that sonic checked THICK.
We're boring it to 426 size and putting it in my wife's 64 fury. Walls are so thick, it could even be bored to 440 size and still be ok.
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Re: Boring 413 to 426 ???
[Re: G_bob]
#169973
12/18/08 09:41 PM
12/18/08 09:41 PM
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Joined: Jun 2003
Posts: 190
Wilmington,NC
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Posts: 190
Wilmington,NC
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Quote:
Quote:
Yes, as long as it passes the sonic check you shouldn't have problems with most blocks, I have one that I had bored to 426 (1959 casting date passenger car block) and it passed the sonic check with flying colors, no problems, the thinnest spot was 170 AFTER it was bored, most mearurements were still over 200.
Agreed.
I have a 61 413 block that sonic checked THICK.
We're boring it to 426 size and putting it in my wife's 64 fury. Walls are so thick, it could even be bored to 440 size and still be ok.
If you are using the crank that came with the block I suppose you are using the 61 transmission also.Otherwise it wont work with the 62 and later 727.
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Re: Boring 413 to 426 ???
[Re: ScottSmith_Harms]
#169977
12/19/08 01:28 PM
12/19/08 01:28 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
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Riverside, Ca
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Quote:
You might luck out and have a 6 bolt crank/aluminum 727, look at the rear flange and count the bolt holes in the crank and you'll know for sure.
Confirmed, 6 bolt crank, still in great shape. Just needs polished and standard bearings.
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Re: Boring 413 to 426 ???
[Re: MoparforLife]
#169978
12/18/09 09:52 PM
12/18/09 09:52 PM
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Anonymous
Unregistered
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Anonymous
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Quote:
Quote:
Truck block yes,standard 413 no unless its Max Wedge block.You need to bore .125,thats 1/8",too much in my opinion.Not saying it can't be done but I wouldn't do it.
I don't know where you got your math but when I went to school 4.18 from 4.25 was .070.
To answer the question Many 413's were bored to 426 spec's long before sonic checking was heard of and lived.
well your bore spec is wrong. 413 have a 4.1875" bore so a .0625 over is required. but the smart
ones bore it .060 and then finish hone it to each piston. bore it .070" over + hone and your gonna
have problems. also when it comes to cylinder block thickness, there is no difference between the
truck/industrial/ or passenger car engine.
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Or just find a 440 block if cubic inches is your goal . 
