steve57104 said:
as far as the cost between chevy and olds, a few hundread dollars to build an olds over a chevy isnt much considering u are already spending 2 to 3 thousand on a good performance engine, when oldsmobile guys come to your car and are proud you chose olds, the few hundread bucks are well worth it, every body puts a chevy in a olds, like putting a dodge engine in a chevy, doesnt make much sense
The engines aren't similar yes, but to say to GM people to put a chrysler engine in a chevy usually won't generate the best reaction. I researched this thoroughly before starting to piece together engine parts for my cutlass. You aren't just looking at cost but also availability and experience. Almost every engine shop knows how to perfectly bore and clearance a 350 small block, probably chevy BB also. It's not every day they come across an olds engine.
But in reality you aren't looking at a few hundred dollars more, you're looking at more like 500 to a thousand dollars more at least when starting from scratch (unless you get lucky or are an engine builder) - if you want more than 350/400 horses out of the engine.