maxed out 5.3?

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02-22-2009, 10:26 AM

yrusoslow

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maxed out 5.3?

what are the limits of a streetable 5.3 ? what is max stroke/bore/cubic inch ? what are the max limits of a 5.3L alum head cylinder bore/valve dia,/spring dia./gross lift?

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02-23-2009, 12:24 AM

LS1TRUCKGUY

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just do some searches. you will find everything you want to know. the 5.3 can be safely bored to a 5.7 using stock size ls1 pistons. there are several people on here pushing 600hp on a mostly stock internal motor with boost. as for the heads, i have no idea. lol

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02-23-2009, 01:08 AM

viciousknid

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Testing to see if it works.
Searched for Max Bore and Immediately found "Max bore on 5.3 is about 3.905"
Stroke I can't find a Max for.
And I think heads will depend on the casting but I don't know anything about head work.