5.3 shortblock differances??
11-20-2011, 11:54 AM
#1
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5.3 shortblock differances?? Lately I have been seeing alot of 2000-2001 5.3s on craigs list for cheap. Are there any major changes in the shortblock, (ie crank lenght or anything) compared to a newer motor say an 04 or 05. I'm not concerned with cams or anything as those would be replaced.
Thanks for the info.
Kory
Thanks for the info.
Kory
11-20-2011, 02:24 PM
#4
GEN III 5.3s are essentially the same. There were a few oddball alum block versions thrown in but the LM7 really didnt change
GEN IV 5.3's got the same flat tops as 4.8's for a bump in compression as well as AFM which most owners hate due to the increased oil consumption
Cranks are unchanged for 5.3/5.7/6.0. Car cranks were gundrilled to reduce weight
There isnt any noteworthy difference to suggest one is superior than another
GEN IV 5.3's got the same flat tops as 4.8's for a bump in compression as well as AFM which most owners hate due to the increased oil consumption
Cranks are unchanged for 5.3/5.7/6.0. Car cranks were gundrilled to reduce weight
There isnt any noteworthy difference to suggest one is superior than another
