All Stroke and NO Bore???
Thread Starter
Melting Slicks
Joined: Dec 2001
Posts: 2,877
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From: Texas
All Stroke and NO Bore???
As some of you are aware, I've been contemplating going the stroker route instead of FI.
I recently heard about some people doing an all stroke and no bore on their LS1. Basically, if I have this right, you keep your LS1 engine and just install a Lunati stroker crank (4.00 - 4.125), Lunati Pro Billet rods Diamond pistons and rings and without boring or buying a resleeved LS1 block you have now increased displacement to 396ci..... Is this right??:confused:
I'm a complete noob to all this, but the impression I have is that this procedure is basically forging the bottom end, and gaining a little more displacement via stroker crank. Is this feasable? Would there be any reliability/longevity issues with just increasing the displacement without bore??
If there is no downside to this, I may consider it as it's much cheaper than going the resleeved block route!
I recently heard about some people doing an all stroke and no bore on their LS1. Basically, if I have this right, you keep your LS1 engine and just install a Lunati stroker crank (4.00 - 4.125), Lunati Pro Billet rods Diamond pistons and rings and without boring or buying a resleeved LS1 block you have now increased displacement to 396ci..... Is this right??:confused:
I'm a complete noob to all this, but the impression I have is that this procedure is basically forging the bottom end, and gaining a little more displacement via stroker crank. Is this feasable? Would there be any reliability/longevity issues with just increasing the displacement without bore??
If there is no downside to this, I may consider it as it's much cheaper than going the resleeved block route!
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Re: All Stroke and NO Bore??? (SvenOdin)
Stroker motors are going to have higher piston speeds, this may generate more heat and limit rpm (component failure).
How does the HP/torque characteristics of this combination match your intended use of the car?
How does the HP/torque characteristics of this combination match your intended use of the car?
Melting Slicks
Joined: Oct 2000
Posts: 2,726
Likes: 24
From: Freehold, NJ
Re: All Stroke and NO Bore??? (SvenOdin)
Is this feasable? Would there be any reliability/longevity issues with just increasing the displacement without bore??
If there is no downside to this, I may consider it as it's much cheaper than going the resleeved block route!
If there is no downside to this, I may consider it as it's much cheaper than going the resleeved block route!
In terms of the LS1, neither strokering or large boring the motor is cheap. A stroker rotating assemble is around $3500 for parts alone. A large bore motor with new pistons will run about $3100 for the block and pistons. Then add assembly for both and installation and it adds up real quick.
Depends on what your goals are, but when you have guys in tbe 10's with the stock block, and H/C/I it doesn't make much financial sense to go stroker or large bore (unless you want to be different)
Le Mans Master
Joined: Sep 2001
Posts: 8,840
Likes: 43
From: State of Confusion.
Re: All Stroke and NO Bore??? (SvenOdin)
If you're on a tight budget, there are places that will make an offset ground crank (budget stroker). The LS1 cranks will take a good amount of power before taking a dump.
Le Mans Master
Joined: Jul 2000
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From: Fort Worth Texas
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Re: All Stroke and NO Bore??? (SvenOdin)
downsides to a stroker motor over a bore motor, are increased sideloading, more weight being thrown, faster piston speeds, and dead time at top and bottom end of the stroke.
with a stroker you get the automatic increase in HP because of displacement, but stroke over bore is more suited to doing a lot of work over a lot of time (ie stump pulling, trailer towing etc... where you do work down low in the rpm range).
With bore over stroke, you get better flow, quicker revving, more HP, better durability. Much more suited to racing.
Either choice you make will be an improvement tho.
[Modified by kewlbrz, 11:13 AM 6/22/2003]
with a stroker you get the automatic increase in HP because of displacement, but stroke over bore is more suited to doing a lot of work over a lot of time (ie stump pulling, trailer towing etc... where you do work down low in the rpm range).
With bore over stroke, you get better flow, quicker revving, more HP, better durability. Much more suited to racing.
Either choice you make will be an improvement tho.
[Modified by kewlbrz, 11:13 AM 6/22/2003]
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Melting Slicks
Joined: Oct 2000
Posts: 2,726
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From: Freehold, NJ
Re: All Stroke and NO Bore??? (kumar75150)
Only problem with bore motors is that there are still leaking issues with most vendors. Just make sure you get a long warranty.
Le Mans Master
Joined: Jul 2000
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From: Fort Worth Texas
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Re: All Stroke and NO Bore??? (kumar75150)
Only problem with bore motors is that there are still leaking issues with most vendors. Just make sure you get a long warranty.
Plus there is the 4.125 C5-R block and the darton sleeved blocks offered by lingenfelter, cartek , and others.
Le Mans Master
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Re: All Stroke and NO Bore??? (kewlbrz)
From the research I have done, about 3 years ago 5/10 bored motors leaked. Now that number has been reduced to about 1/10. Thats still a pretty high percentage.
Personally I know that bore motors make more power than all stroke ones but I just didnt feel too comfortable. Also, you have to decided how much bottle you want to throw at the motor.
Personally I know that bore motors make more power than all stroke ones but I just didnt feel too comfortable. Also, you have to decided how much bottle you want to throw at the motor.
Le Mans Master
Joined: Apr 1999
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From: Burlington ON
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Re: All Stroke and NO Bore??? (kumar75150)
It has been probably two years or more since I have heard of ANY sleeve problems with ARE's resleeved blocks. In the early stages of the resleeve development they had their issues here and there but they always fixed it up for the customer.
I know I personally have put over 20K miles on an ARE resleeved block without any problems.
I know I personally have put over 20K miles on an ARE resleeved block without any problems.
Le Mans Master
Joined: Aug 2001
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From: Savannah GA
Cruise-In IV Veteran
Re: All Stroke and NO Bore??? (MattG)
:withstupid:
I have had an MMS built 388 All-Bore motor for a year and no problems at all. I am pretty sure the old sleeving process has been fixed.
:seeya MattG
[Modified by C5-VERT, 12:00 PM 6/23/2003]
I have had an MMS built 388 All-Bore motor for a year and no problems at all. I am pretty sure the old sleeving process has been fixed.
:seeya MattG
[Modified by C5-VERT, 12:00 PM 6/23/2003]
