The 267's do only 1 thing good and that's sound good with a good dual exzaust just as kevd said but, that's due to the short stroke. Rated stock at 115 horsepower, there not much for any kind of bragging rights. They only made 267's from 1979 until 1981. If you pulled a little more compression with it, by shaving the head to increase to 9 to 1 compression ( stock is 8 to 1 or 7 to 1 ), you'd probably see 20 horse maby, other than that, a set of headders and a 4bbl with good intake, would see you around 200 maby, now if you added this up, head shaving/ head rebuild would run 4-500 bucks probably, headders, good 1's are going to run 120 at least, 4bbl carb and manifold, about 400 for them. add that up and you get 1,020 bucks, go find a good pre '86 GMC/ Chevy pickup truck for 4-500 ( 350 powered ) bucks and get, you get about 250-300 horse right there with the pickup engine, put your 267 in the pickup, and sell it for 3-400 bucks. I had a '81 Impala that had been in a wreck, bought it for the motor for 75 bucks, I thought it was a 350 but, I ended up having it hauled off cause it was a useless engine.