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4.250 stroke

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Old May 21, 2009 | 01:29 AM
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Default 4.250 stroke

Im rebuilding my ls2. Im putting in darton sleeves and i want to know if i will be able to put a 4.250 stroke in it. What is needed and i also want to spray a 350 shot of nitrous. any suggestions?
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Old May 21, 2009 | 02:18 AM
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hmmm, 4.250" stroke, plus 350 hit. Make sure you set your compression height to be able to handle it. Other than that, I don't see a problem with it. You should be able to use the stroke as long as you have the Darton LS7 sleeves, as they are a bit longer and will better accommodate the stroke..
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Old May 21, 2009 | 10:02 AM
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Originally Posted by lsanb05
any suggestions?

We have a 460ci you can a run up to a 200 shot on but 350 is beyond what we would recommend.
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Old May 21, 2009 | 11:10 PM
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what do you mean by compression height? What is recommended
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Old May 22, 2009 | 10:11 PM
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Originally Posted by lsanb05
Im rebuilding my ls2. Im putting in darton sleeves and i want to know if i will be able to put a 4.250 stroke in it. What is needed and i also want to spray a 350 shot of nitrous. any suggestions?
a really short connecting rod.....
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Old May 23, 2009 | 12:38 AM
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So what connecting rod would be the proper length? If compression ratio has anything to do with it i looking to run between 12:1 and 13:1
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Old May 23, 2009 | 01:23 AM
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Look at the ERL 500CI setup....

http://www.erlperformance.com/images...icpriceweb.pdf
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Old May 23, 2009 | 05:40 PM
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Originally Posted by lsanb05
Im rebuilding my ls2. Im putting in darton sleeves and i want to know if i will be able to put a 4.250 stroke in it. What is needed and i also want to spray a 350 shot of nitrous. any suggestions?
Like Haans and Blanco said 4.250 and a 350 shot probably won't play well together due to the piston being too weak. I would do a 4.000 with a 6.100 rod so you have a really strong piston. 350 is a lot of NOS. If you can stay lower on the spray you could run more stoke and the necessarily shorter piston maybe.
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Old May 25, 2009 | 11:53 PM
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Originally Posted by gator's 99TA
a really short connecting rod.....
Thats part of the problem, a really short connecting rod leaves your piston falling out of the bore, while it may only look like a small amount, the taper of your piston is generally to the bottom of the skirt. Once that area exits the sleeve, pretty much a trainwreck at that point.
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