c0rey

Well after trashing everything in the bottom end of my lt1 block and taking out the block. I have been researching and reseaching and still need a couple answers. I have a reg gen 1 sbc bottom end sitting here. I am trying to figure out how in the hell to get my lt1 topend on it. Here is a list of questions for the experts.

Are the heads and direct swap?

I know I need a electric water pump.

With the accessory bracket from a lt1 bolt up to a gen 1 block with lt1 heads?

How can I internal balance the bottom end so I can run a lt1 balancer hub?

Will I be able to modify a gen 1 cam to have a cam dowel on it?

Anything else i am forgetting let me know. I want a lt1 topend of a gen 1 bottom end.

FastZinTennessee

They will bolt on, but the cooling passages are different so it's a no-go.

I believe it would.

The LT1 cam is simply a standard small block cam with a longer dowel pin.

You're starting off this project all wrong. While parts can be modified, usually it ends up being someone chasing horsepower and converting gen I heads to the LT1 block, this is way beyond the scope, and way beyond being worthwhile money-wise from a basic rebuild standpoint. How much money do you have available to get this motor going again?

Injuneer

You can't use the LT1 fuel injection without the Opti, and you can't put the Opti on a Gen 1 block, at least not without inventing the conversion for the front of the block. Someone has mounted a distributor in the conventional position and managed to adapt the Opti optical sensor.

MachinistOne

That's only true if he has a factory roller cam block, otherwise the snout of the cam is diferent, and does not use a retainer plate.