Bore 5 3 To 5 7

Bore 5 3 To 5 7. Guidelines for Shaft and Bore Tolerances Encoder Product Company -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. 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

If you can have the block sonic tested and checked for cracks first, you are going to be much more likely to succeed without issue. and all 7 blocks i have done this to have sonic-tested to 5.7 wall specs with very little core-shift

LSXceleration 4.8/5.3/5.7L Small Bore LS9 MLS 7Layer Head Gasket 1422034

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. Most 5.3s can take the 3.9" bore of the LS1 without issue, though not all

5 inch pulley 1 inch bore fast shipping and best service. You'd have to know your head chamber size (61.15cc I believe for 5.3 heads), head gasket thickness and bore, 99mm block bore size with a 92mm stroke, and most importantly piston type 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

IPA 3 3/4 in Brass Bore Brush Set, 5/16 in, 13/32 in, 7/16 in, 9/16 in, 5/8 in, 3/4 in Brush Dia. Most 5.3s can take the 3.9" bore of the LS1 without issue, though not all If you have a 10 to 1 CR it will make it close to 11 to 1 CR.