Possible forged steel crank?

[Kohburn]

didn't even think about clearance up top.. would explain the rods being .2" longer - had to move the cylinders up away from the crank more

Actually the block still has a 8.818 deck height, the cylenders went nowhere. But on the 3900 however... they moved outward? I read it somewhere.

really? that'd mean that the wrist pin is .2 higher making for some seriously thin piston ring area..

[Fierobsessed]

Looking at the pics V6h.o. posted in his other thread about the 3500 engine... You can see that the pin bore comes REALLY close to the rings.

[Q]

Don't be scared of a pin bore cutting into the oil ring groove. The procedure is to run an oil ring support - basically another flat ring - in the groove. There are no stresses on the oil ring that would require material below it.

Here's a KB stroker piston:

[Fierobsessed]

Hey that's pretty slick... Maybe I should go with those 6.0"ers But if I go with the 3500 crank, I'll be looking for rods that might not exist, to pull that off.

[fieromadman]

That would be awesome if it worked. Im alittle bit concerned about the rods too though. Good luck man, let me know if it works

[Kohburn]

i'd just as soon have the rod journals turned down to match the 3400 rods if there is too much interfierence with the block