Engine Swap Question

[mattrains]

My k5 blazer currently has a 454 big block and turbo 400 combo. I am trying to swap in a small block motor. My question is can I use the same frame perches that are in there or do I need to find small block frame perches for my motor. I am Not sure if they are different or the same?

I am referring to the peace the motor mount bolts to that connects the engine motor mount to the frame. Also do I need to swap my cross member from a big block crossmember to a small block crossmember?

 

[bradshawtech]

Should be the same frame side mounts for either class of engine.

 

[Deuling]

Huh???

You were putting in an LS 6.2 last I knew....

 

[mattrains]

Going from a big block to L92

 

[Deuling]

Going from a big block to L92

I would have made that more specific as an sbc and an LS based motor are completely different.

 

[mattrains]

My L92 mounts the same exact as a SBC with clamshell mounts.

 

[Deuling]

My L92 mounts the same exact as a SBC with clamshell mounts.

Oh really???

I did not know this.... Sorry bout that then.