In my discussions with Jim Thompson at Sunbelt Performance Engines, he said the same things that Alan posted above.

So in that case, would the 4 cylinders be the same? I was always told this.........

L16 = 1.6 liter standard pistons and stroke

L18 = 1.8 liter with larger pistons but same stroke as L16

L20B= 2.0 liter with large pistons of 1.8L but longer stroke.

Would this be correct? and if so, do the 2.4 / 2.6 / 2.8 use the same principle?

just wondering.

Dave

if not mistaken the L20B has a higher engine block deck height, which would alow for the longer stroke I guess. If you look at the front cover there is an extra bolt at the top on either side!

Thanks guys for confirming my understanding of the L24 block with 280 rods and crank and 240 pistons

Edited June 7, 201014 yr by rjracin240

if not mistaken the L20B has a higher engine block deck height, which would alow for the longer stroke I guess. If you look at the front cover there is an extra bolt at the top on either side!

Thanks guys for confirming my understanding of the L24 block with 280 rods and crank and 240 pistons

You're right. I remembered last night while installing the new motor in the red Z. If I recall correctly, it's about 19mm taller.