destrokin my ls1

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Jan 20, 2008 | 07:50 AM

jkwalkercchs

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From: morristown/newport,tn

destrokin my ls1

im thinkin of putting a 4.8 crank in my ls1
anyone here tried that?
was there any gains?

Jan 20, 2008 | 09:06 AM

Shawn @ VA Speed

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no replacement for displacement-keep the longer stroke,lose torque with shorter stroke-torque is what gets the job done

Jan 20, 2008 | 10:24 AM

jkwalkercchs

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From: morristown/newport,tn

hey thanks i figured that would be the answer
i am havin trouble with figuring out what rod length i need for a ls1 bore on a 5.3 truck block

Jan 21, 2008 | 12:46 PM

zman1969

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From: Dallas Tx

rod

i think they are the same length - the longer the better if you have a choice as it reduces cyl wall thrust and distortion

Jan 21, 2008 | 02:05 PM

Russ K

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Quote:

Originally Posted by jkwalkercchs

hey thanks i figured that would be the answer
i am havin trouble with figuring out what rod length i need for a ls1 bore on a 5.3 truck block

A 5.7 has a 3.897-3.898 bore. A 5.3 bore is 3.779-3.78, are you sure that you can bore the cylinders .118 oversize?

Russ Kemp

Jan 21, 2008 | 03:39 PM

Shawn @ VA Speed

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you can bore the cylinders to a 5.7,and they do have the same rod length stock,i would recommend 6.125 rods,give you less side loading on the cylinders

Jan 21, 2008 | 11:15 PM

cellulis44

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YEA!!! bore that sucker out... you could go 4.8 all forged internals... 13.0:1... nasty cam.. shift at at 7500... lots of nos.. HAHAHA little screamer