LSx '85 C10

Can a 4.250 crank be made to work in a 5.3 bored to 3.905 and get a 408 out of it?

Silver408z

iTrader: (1)

That's going to be a fairly expensive crank I would think. You would be better off getting a 6.0 block and staying with a 4" crank. Less expensive and more available. I have also seen shops say they really prefer staying with a 4" cranks due to rod angles or something like that.

redtan

iTrader: (5)

It can be, wouldn't want it in my car. Can you imagine how much the piston would rock at the bottom of the bore and how much oil you'd burn.

All for what, a savings of a few hundred bux by going with a 5.3 iron block as opposed to a 6.0 iron block.

Do it right the first time. If you want a 408, get an LQ4/9 block.

Gray86hatch

iTrader: (83)

you could do it but is not a good idea the piston would be way out of the bore at BDC. Custom pistons would be a must.

Better off spending $2200 and having the block sleeved and use stocking part # crank rods and pistons

Tim

jgb454ss

Summit sells a ready to go 6.0 block that is bored and clearanced for stroker for around 750