Building a STROKER motor question
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Le Mans Master
Joined: May 2008
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From: Helotes TEXAS
Building a STROKER motor question
Okay all you engine builder guru's....
I'n considering building a stroker 427 for my FRC. I've done some research and have noticed a lot "stroker" motors built with LQ9 / LQ4 6.0 iron blocks.
My question is can you do the same with a 6.0 aluminum block ?
I'n considering building a stroker 427 for my FRC. I've done some research and have noticed a lot "stroker" motors built with LQ9 / LQ4 6.0 iron blocks.
My question is can you do the same with a 6.0 aluminum block ?
Le Mans Master
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Well think of it like this.........GM makes a LS-7 engine..right???
Team Owner
Joined: May 2005
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From: Flagstaff Az.
You can. There used to be some concern about the sleeving process for the aluminum blocks, but those problems have been addressed. Go with a builder with a good rep and you should have no trouble. As I recall the slightly smaller 406-408 engines were a lot less in price. 
Team Owner
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From: At the beach in little Rhody
Check out the thread by member WKMCD who is not running a sleeved LS2 built by Virginia Speed. Lots of good information, photos, etc. From what I understand you are much better off sleeving an LS2 block because you will get better piston support at bottom of the stroke. Its pretty much a bolt in as well since you don't have to deal with the dry sump issue either as you do with the LS7.
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From: Pasco WA
Check out the thread by member WKMCD who is not running a sleeved LS2 built by Virginia Speed. Lots of good information, photos, etc. From what I understand you are much better off sleeving an LS2 block because you will get better piston support at bottom of the stroke. Its pretty much a bolt in as well since you don't have to deal with the dry sump issue either as you do with the LS7.
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Drifting
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From: New Hartford IA
The guys doing them with an iron 6.0l block are overboreing then .060"+ and running a 4.125" stroke. Not ideal as a iron block has the shortest sleeve by a small amound to it's aluminum brother and piston rock at BDC can cause problems over time. People do it all the time though, but it's hit or miss as to the longevity ov the build.
Most would only take a 6.0l aluminum ls2 block .020" over though some have gone .030" without problems. Sleeving is the best way to go bigger, but it's a decent amount out of pocket.
Most would only take a 6.0l aluminum ls2 block .020" over though some have gone .030" without problems. Sleeving is the best way to go bigger, but it's a decent amount out of pocket.
Pro
Joined: Dec 2003
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From: chandler az
I would rather just buy the short block and have it shipped right to my door. It depends what your time is worth and if you have a local builder who can do sleeve work. If you have to pay for truck freight back and forth you may well just pay to have the short block shipped once.
If you buy a new block from GM, you still have to machine it. They don't come ready to assemble. It needs the full machine work. Sleeving is something special and not all machine shops can do this right.
If you buy a new block from GM, you still have to machine it. They don't come ready to assemble. It needs the full machine work. Sleeving is something special and not all machine shops can do this right.
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Thread Starter
Le Mans Master
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From: Helotes TEXAS
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From: Pasco WA