Bore 5 3 To 5 7. What Does A Bore Gauge Measure at Julio Hohn blog Your 5.3 more than likely will not have sleeves, since it is an iron block you can bore a 5.3 to be 5.7 if you have a castiron block you can also bore a 4.8 to be a 5.7 but you have to use the 5.7 stroke crank your 5.3 bore right now is 96mm and your going to bore it to 99mm so yes it will work if you have a cast iron block if you have a aluminum 5.3 you will have to have inserts put in the block and that is very expensive good luck
Impeller 7/8″ Bore, 53/16″ Diameter GPM Surplus from gpmsurplus.com
The combustion chambers on 5.3 heads are about 10% less that the 5.7 or 6.0 heads giving about 1 point more to the compression ratio Even the aluminum 5.3L blocks will go out to LS1 bore size
Impeller 7/8″ Bore, 53/16″ Diameter GPM Surplus
The combustion chambers on 5.3 heads are about 10% less that the 5.7 or 6.0 heads giving about 1 point more to the compression ratio Even the aluminum 5.3L blocks will go out to LS1 bore size Then buy 5.7 pistons and use the 5.3 rotating assembly in the new block
872+ci 5.3 Bore Spacing Engines Reher Morrison Racing Engines. Your 5.3 more than likely will not have sleeves, since it is an iron block -the 5.3 and 5.7 have the same stroke and IN FACT most is not all of the 5.3 cranks have the 12552216 casting number which is the same crank as the 5.7 but WITHOUT the lightening holes which run through the.
Fixed Bore, 1 Groove, Sheave 813GX3AK44X5/8 Grainger. I have seen LS 5.3's bored to 5.7-i thought it was something like .118 to get to the 5.7 bore, or am I wrong Seems pretty far out, unless their the same block, wall thickness, and 5.7 is just bored further Lightweight Forging; Forced Induction or Small nitrous applications