Largest crank for a 5.3
03-26-2012, 07:55 PM
#2
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The largest stroker kit I've seen for the 5.3 is a 4.0" stroke which makes it 363 CID (5.9L). You can bore the 5.3 block out to 5.7 bore size and then use a LS1 stroker kit for 383 CID (6.2L).
03-27-2012, 05:05 AM
#6
TECH Fanatic
I just installed a 4" crank in my LM7 and the rod bolts have maybe .060-.070" clearance to the cylinder wall edges. A 4.125" crank will likely require some clearancing, but its probably not a big deal.
