It's funny watching people get that puzzled look on their face when they look under the hood, I guess they get confused when they don't see a Chevy engine in there, they'll scratch their head and look the car over again before realizing it's an Omega and not a Nova.

The original Olds 260 had been replaced by the previous owner with a 1971 350, it blew a head gasket a couple weeks after I bought the car. One side of the engine had a Orange GM head gasket (which blew) and a FelPro on the other side. It bent 2 rods and scuffed up half the pistions and cylinder walls so I replaced that motor with another 1971 Olds 350 core engine that had been pulled from a customers car a few weeks later. I had that block bored .030" over. I installed a new set of TRW 10.5 to 1 forged pistons and Speed/Pro Plaza Moly rings. I did some mild bowl work on the 7a heads but nothing major and valvejob. The only thingsI used from the previous motor was the cam and valve springs, valvecovers, intake and headers. The camshaft was a hydraulic flat tappet Crane Fireball with 314 degree's of advertised duration, 232 degree's @ .050 and 475" lift, 113 lobe separation. New Anti pump up lifters, pushrods, timing chain, bearings etc were all installed. With a Holley Street Dominator intake and a Q-Jet carb I bought off a Pontiac Super/Stock racer, this combo ran 12.99 best. Then I added the 1970 #6 heads I ported to the engine in 2005. I used FelPro #1185 .039" when compressed Marine head gaskets so the final compression ratio is only 9.5 to 1. The heads were milled .020" but after polishing the combustion chambers on the #6 heads the combustion chambers CCed out to 69cc. Those chambers are smooth and shined like my intake when I was finished them. All the sharp edges were removed. I started with 400 grit wet/dry sand paper and butter bowl half filled with a 50/50 blend of dish liquid and water and finished up with 2000 grit sand paper, all by hand. A set of Oldsmobile 403 rods with SPS bolts, swing on a 10/10 Nodular Iron Crankshaft. ARP Head & Main bolts were used not studs. Externally balanced. I used Mondello valve springs, Crane lifters, new pushrods and new Crane stock replacement rockers. Accel H.E.I dist. and Supercoil. I bought a Holley Street Dominator that has had 10lbs of aluminum tig welded on the top and sides of the runners and flange area so the runners could match BBO heads. The intake has alot of history behind it and has been engines that have run mid 9s in the 1/4 mile. I don't have BBO heads on my engine but I opened up the intake ports on my SBO #6 heads to slightly larger than BBO intake ports, see porting SBO #6 heads link below. I replaced the Q-Jet with a BG Mighty Demon for looks more than anything. The Hooker 1 3/4" Headers came on the car but I replaced the 2 1/4" inch dual exhaust with 3" mandrel bent tubing into a Kooks X pipe and then through DynoMax mufflers with turn downs just in front of the rearend. It runs on pump gas on the street and at the track without any problems. This engine has been in the car since 1985, it has been down the track over 500 times, more than 200 of those runs were with Nitrous. I have put over 68,000 miles on the short block driving it on the street and I even use to pull my 18ft Skeeter bass boat to area lakes for years, some more than 50 miles away without any problems. Anyone who says an Oldsmobile won't live apparently doesn't know how to build one.