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Old 06-03-2010, 09:28 PM   #1
snowball
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Default 6.0 max bore and stroke

i was looking at building a 6.0 for drag racing was goint to switch to carb setup
what is the max bore& stroke that block will handle???
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Old 06-03-2010, 09:31 PM   #2
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Default Re: 6.0 max bore and stroke

NA racing I assume. Practically the largest easy to balance strokes 4.125-4.250 but I doubt you'll get anything over a 4.125 in a stock block without a bunch of work. As for the overbore sonic checking will reveal the total overbore capability. I have heard of guys going as big as 4.100 but I doubt this is a commonly found block thickness.

I haven't run anything over a 4.00 stroke becuase I don;t like the way the piston pins gets.
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Old 06-03-2010, 09:34 PM   #3
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Default Re: 6.0 max bore and stroke

what do you think max hp potential would be on with alky carb and mildly worked over heads l92 heads
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Old 06-03-2010, 10:29 PM   #4
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Default Re: 6.0 max bore and stroke

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what do you think max hp potential would be on with alky carb and mildly worked over heads l92 heads
with alky you'll need a bigger port on average. 700ish or more with the right builder at 400ci without to much effort.
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Old 06-04-2010, 02:35 AM   #5
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Default Re: 6.0 max bore and stroke

We've got a 6.0L block out here that we plan on getting sonic tested. Hoping to see if we can get a 4.125 or so bore out of it, but we'll see. 4.125 crank and 4.000 stroke could make a 427 and would be a cheaper way to do it.
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Old 06-04-2010, 04:55 AM   #6
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Default Re: 6.0 max bore and stroke

We bored mine to 4.125 and 3/4 filled the block, no problems. And 4.100 stroke.
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Old 06-04-2010, 05:39 AM   #7
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Default Re: 6.0 max bore and stroke

You can make a 427 out of that.... 4.075" bore x 4.125" stroke, but if I was building a drag race motor depending on the quality of the head porting and RPM range I would go 4.075" x 4.00" for something in the 8Krpm range or smaller for more RPM. You could get 900+hp out of a Iron 6.0L block and L92 castings if you knew what you were doing... actually I honestly think right at a grand is doable with a small motor and once I get a few of my pet projects done this will be a project of mine.

Bret
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Old 06-04-2010, 09:56 AM   #8
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Default Re: 6.0 max bore and stroke

wow 4.125 with a 6.0 block, I didn't know you could do that. I thought I was adventurous with a 4.060 bore iron block back in 2001.
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Old 06-04-2010, 10:01 AM   #9
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Default Re: 6.0 max bore and stroke

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wow 4.125 with a 6.0 block, I didn't know you could do that. I thought I was adventurous with a 4.060 bore iron block back in 2001.
depends on casting shift etc.
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Old 06-04-2010, 10:08 AM   #10
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Default Re: 6.0 max bore and stroke

do all of the cast iron 6.0 have same wall thinkness?
is there some years that are thinner or thicker?
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Old 06-04-2010, 10:10 AM   #11
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Default Re: 6.0 max bore and stroke

While some of the smarter LS guys are in here, how big can you typically go on an aluminum 6.0 block? I've always heard it wasn't much but have never had one to find out.
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Old 06-04-2010, 10:13 AM   #12
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Default Re: 6.0 max bore and stroke

this is impressive!!

who would you suggest to do a build like this?


Quote:
Originally Posted by SStrokerAce View Post
You can make a 427 out of that.... 4.075" bore x 4.125" stroke, but if I was building a drag race motor depending on the quality of the head porting and RPM range I would go 4.075" x 4.00" for something in the 8Krpm range or smaller for more RPM. You could get 900+hp out of a Iron 6.0L block and L92 castings if you knew what you were doing... actually I honestly think right at a grand is doable with a small motor and once I get a few of my pet projects done this will be a project of mine.

Bret
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Old 06-04-2010, 10:25 AM   #13
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Default Re: 6.0 max bore and stroke

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Originally Posted by Mike Moore View Post
While some of the smarter LS guys are in here, how big can you typically go on an aluminum 6.0 block? I've always heard it wasn't much but have never had one to find out.
sleeves are thin. I would not go over 4.020 IMHO even that might be to much. I limit my factory sleeve overbores to 10 thousandths and thats it.
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Old 06-04-2010, 12:12 PM   #14
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Default Re: 6.0 max bore and stroke

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Originally Posted by Collinsautomotive View Post
sleeves are thin. I would not go over 4.020 IMHO even that might be to much. I limit my factory sleeve overbores to 10 thousandths and thats it.
Thanks Shawn, that's what I heard but I wanted to hear it from a reliable source.
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Old 06-04-2010, 12:38 PM   #15
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Default Re: 6.0 max bore and stroke

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Thanks Shawn, that's what I heard but I wanted to hear it from a reliable source.
Not a problem dude. Those are safe maximums I know work.
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