Originally Posted by
GLHS60
It's the crankshaft that determines if it's a 2.2 or 2.5.
From 1989 on the blocks can be interchangeable.
As mentioned, measure the piston travel from BDC to TDC
A 2.5 will measure a bit over 4 inches, (4.09")
A 2.2 piston travels closer to 3.5 inches (3.64")
Try and keep questions short and precise if possible.
Old jokers like me find it hard to follow rambling posts.
I'm not saying you're rambling, it's an in general request.
As Johnny rambled, there are times when 2.2/2.5 electronics are compatible.
Like everything in life, it depends on the combination.
Thanks
Randy