Re: Difference between 2.8 and 3.1???
That is pretty much it... The 3.1 is a stroked 2.8 and the 3.4 is a larger bore 3.1.
Engine____Bore_______ Stroke
2.8_______3.5"________ 3.11"
3.1_______3.5"_________3.31"
3.4_______3.62"________3.31"
Although the older years of 2.8s also had smaller bearings and piston height decreased by ~4mm (12cc dished pistons used) in the 3.1s.
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69 Chevy C10
88 Sierra
02 2500 Suburban
And too many S10s to list!
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