OK,
not sure if you just want to drop in a no custom do not do modifying drop in type engine?
This would not be a drop in exchange engine, but,,I would build a 292 if you are wanting for it to keep up w/the V-8's & are naturally aspirated.
If you build a 250, you are going to need gearing, better trans,converter, etc to be really pleased with running a 250.
Cubic inches is what you would need if going N/A (Naturally aspirated)
I know EFI will chime in and offer a 4.2 trailblazer engine, but that is even more work involved over a 292 engine.
So, do you still want a standard 250 engine in their, or??
MBHD
