so the only difference btw the 4.8 and 5.3
#4
Originally Posted by nekkid_hill_billy
i believe you both are wrong...the 5.3 has different piston rods resulting in a different stroke....and if i am not mistaking the crank is different
#7
Originally Posted by GMCtrk
is a different length pushrod???? and that accounts for a $800 price diff 
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#8
Originally Posted by therock
Anyone remember the 1969 Z28 302. A 4.00" bore with a shorter stroke. It really wound up fast.
That motor also had some powdered metal rods if my memory serves me.
#9
Originally Posted by therock
Anyone remember the 1969 Z28 302. A 4.00" bore with a shorter stroke. It really wound up fast.






