what exactly machine work needs a lt1 block to install a 383 or 396 kit?

 

As far as I know, none. You only replace existing parts, that is, crank, rods and pistons.... I'm sure someone else will tell me I'm wrong, but that's my $0.02.

 

so, no clearance for rods or something? just bore to new piston?

 

For a 383 you will at a minimum need to have the cylinder bore.
In most cases the block will need to be machined down by the pan rail so the rod bolts will clear. Some didn't have to clear for that but others have.

Forr a 396 the same will need to be done and in most cases there will need to be clearance in the cam area for the rods. A lot of people run a small base circle cam with 396 setups.

If you do a search on this you should get a mountain of information.
Actually there is a lot of things that should be done to make it last so I definately do a search.

 

anyone have a specific link? i'm doing a search but i haven't found it yet!

 

Call Chad At Golenengineservice.com Their Building My 383. Thie Is One Guy Who Will Build You Engine And Answer All Questions And Not Blow You Off The Phone