['68OrangeSunshine]

I have no 250 experience, so my view is admittedly biased. I really like the 292 over the V8s. I have a crate Mr Goodwrench 350 in a '71 [K/5] Jimmy and once ran a 454 in a '67 K/10 Suburban. My '68 C/10 Stepside w/ L6 292 has better torque that the stock BBC, and better acceleration than the stock 350. It's also lighter: ~125# less than the SBC and ~200# under the BBC.
The 454 had an iron intake and iron exhaust manifolds and a 625 CFM Carter AFB. The 350 has Heddman headers, a Weiand intake and a Carter 600 CFM AFB. The 292 is bored .030-over, has oversize intake valves [307 V8=1.86], a Crane cam 260H, Badger cast pistons, and Offy 4V intake, Clifford headers, and a 500 CFM Edelbrock 4 Bbl "Performer" [AFB clone]. It's the original engine, rebuilt once. So it may be unfair to compare a hand built engine with 2 stock factory engines. My last L6 engine, a '67 292 block, I built in 1977-- it ran 25 years and 250,000 miles. It was bored .030 over, but other wise stock [or OEM "heavy duty" parts from the dealer.] I ran the same intake and Clifford [Research] headers and a Holley 390 CFM. After a 500 mile break-in on the new engine, the Holley gave up the ghost, and I went with the Edelbrock.
From my perspective-- running and gunning 292s since 1973, in contrast to Mr Slick, the 250 looks too small.
Rick: Sweet engine and welcome to the Board.