I'm on the lookout for a 3.0 crank and 3 I've found so far have either been ground or need grinding, is this typical or should I wait for a good standard size crank ?.

 

Why not grind one and build one of those experimental stroker engines with chevy pistons . You should know who to ask about it on this forum. If my new block dies on me i will do that.

 

I want to play safe and do a conservative build, not saying offset grinding wont work but welding onto a forging isn't for me.

 

It isn't welded. Just wanted to be clear . Fully understand the conservative aproach though.

 

Ahh my mistake, so the offset grinding reduces the size of the journal to achieve the longer stroke ?, what mitsi rods and chevy ?
pistons are used to achieve the 3.4 ?.

 

Yes the journals are ground down to much smaller pins. As far as the pistons and rods. We could talk about that privately. Being a bigger engine I don't feel comfortable throwing out the part numbers because there is a bit more to it.

 

My oil leak has me so PO'ed that I am tempted to build one of Sid's engines..

 

I did some research on how I should prep a 3.0 crank when I have one and it seems cross drilling and knife edging isn't all it's made out to be. Interestingly main and big end overlap seems to point to the 2.5 crank being stronger than the 3.0 though I guess you'd need huge output to break either.

 

where have you found these "need work" cranks

 

In the UK. Cost of oversize bearings made me keep looking.

 

I've got one I'd be willing to part with

 

In good condition, or needs work?

 

as far as I know it is perfect

 

Thanks but I'm looking for one that needs work. I'd rather the guys have a virgin crank that need it. For what I do it can be pretty ground up.

 

Thanks for the offer but I'm thousands of miles from you, and I know of a couple of cranks in my country, What do good 3.0 cranks make in the US now ?.