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Discussion Starter #1
what is the difference?

Can you increase the CID without anyone knowing by physical inspection?

Do you have to change the block? What are the regular upgrades that are done to stroker motor?

I do not know anything about strokers and would appreciate anyone that would take the time and explain it in general?

Thanks
 

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I'm no expert, but all bore motor refers to increased CID by bore increase only. Stroker motor increases length of stroke as well, for increased CID.
Block remains the same, the sleeves can be changed out for bigger bores. A 427 looks the same as a 383 or 350, they just don't sound or behave the same.
Try a search, there are many threads available to answer your questions.
 

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Cartek recently finished my 382 4X stroker , It's a stock bore with a 4" forged crankshaft. Zrod has it mostly right, between new Darton sleeves and a stroker crankshaft Cartek is building motors above 450 cubic inches using the stock LS1/LS6 block. As to the sound, my 382 only sounds different from my 346 because of a more radical cam; I doubt if anyone could identify the extra cubes from the sound. There may be more difference in the sounds of a 427 or bigger, I never paid much attention.
 

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An all bore motor is just that. A sleeved block with a 4.100 piston and the stock stroke of 3.622 would be an all bore 382.
A stock block, pistons 3.898 with a 4" crank would be a stroked 382.
Combine the 4.100 piston with the 4" stroke and you have a bored and stroked 422. :coo:
 

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Short version
All bore = revs quicker higher RPM capability
stroker = more torque down low


:z:
.
 

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To put this info in perspective, the LS6 is very good at producing high HP numbers. However if you want to best utilize your performance out of this motor, by keeping an equal HP Torque output, stroking is the way to go IMO. A good heads and cam can net you say 470rwhp, 430tq. Go with a stroker 383, you will pickup quite a bit more Torque over HP and keep the motor well balanced, say 500rwhp/490rwtq.
 

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Discussion Starter #8
Thank you all for your explanation. I have a few more questions now:
1- What is involved in sleeving a block?
2- What is the difference between wet sleeves and dry sleeves?
3- What is the maximum cid you can reach with a stock ls6 block?
4- what is the difference between 382 and 383 setups?
 

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2002Z06Yellow said:
4- what is the difference between 382 and 383 setups?

I got this one! No difference...it's all in how you do the math and what numbers you start with. :D :thumb:


*note...not including the all bore motors. :pp:
 

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A stroked 382 (381.88) is stock size pistons 3.898 with a 4" stroke.
A stroked 383 is usually a 3.903 (382.86) or 3.905 (383.25) piston with a 4" stroke.

The largest you can bring a LS block out to right now is 4.160 bore and with some cutting inside the block you can get a 4.25 crank in there. 462.12 ci
 

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Discussion Starter #11
FRC Tom said:
A stroked 382 (381.88) is stock size pistons 3.898 with a 4" stroke.
A stroked 383 is usually a 3.903 (382.86) or 3.905 (383.25) piston with a 4" stroke.

The largest you can bring a LS block out to right now is 4.160 bore and with some cutting inside the block you can get a 4.25 crank in there. 462.12 ci
why is the 427 the more common number? are there any issues with going bigger?
 

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2002Z06Yellow said:
why is the 427 the more common number? are there any issues with going bigger?
Before the Darton sleeves the largest dry sleeve was a 4.120 bore and with a 4" stroke produced a 426.61 CI. The intro of the C5R block brought the bore up to 4.125 and with a 4" stroke produces a 427.65 CI. The 4.125 crank is a tight fit and is not used very much and a 4.250 crank has to be custom made plus the removal of some material in the block.
334s and 447s are more common since the intro of the Darton sleeve.

Andy from A&A made mention that Darton was working on a 4.25" sleeve.
 

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"Andy from A&A made mention that Darton was working on a 4.25" sleeve."

Hmm. 468 cid..............................Hmmmmmmmmmmmmm
 
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