Bruce’s Oldsmobile Omega

expand

This is my 1976 Omega Hatchback. Picture was taken in front of Race Rock here in Orlando Florida.

It's powered by a self built 1971 Olds 350. I had it board .030" over and I added TRW 2320F forged 10 to 1 pistons along with Speed/Pro Plazma moly rings. They are connected to the crankshaft by a set of massaged Olds 403 rods with SPS bolts. I had the Nodular Iron Crankshaft turned 10/10. The heads are #7 heads, stock size valves and a little pocket porting. tear dropped valveguide bosses ect. The ports are untouched. They heads were milled .045" for added compression. A virgin Holley Street Dominator Intake is used along with a 750cfm Q-Jet I bought off a Super/Stock racer in the early 80's. The camshaft is a 25 year old Crane Fireball hydraulic with 314 degrees of advertised duration ??? @ .050 and .480" lift with 114 lobe seperation along with Crane springs and stock rockers.

Hooker 1 3/4" headers with 3" collectors exit the exhaust into mandrel bent 3" tubing with Kooks X-Pipe and DynoMax Welded Race Magnums with turndowns just in front of the rearend.

I rebuilt and modified the Turbo 400 per a tech artical that was published in the November 1986 issue of Super/Stock Magazine. I use a Darrell Young 10" 3500 stall converter.

The rearend is Chevy 12 bolt out of a 69 Camero with an Eaton posi unit with 3.73 gears.

I use Weld Pro/Star 15x5" rims up front with 215/75/15 radials and 15x8" with 4.5" backspacing on the rear with 275/60/15 BFGoodrich Drag Radials.

Interor mods, remove frint bench seat, 80lbs easy and install Jazz racing seats, 10 pounds tops. Removed fold down back seat and spare tire hatch/cover/lid, it was pretty heavy. I would say all that weighed 150lbs and my thought was, remove 150lbs and install a weight box at the very back of the trunk area to help weight transfer with less weight. No weight box back there yet.

Chassis mods, move battery to trunk. removed that big chunk of metal from behind the front bumper and hung the chrome front bumper skin to the 5mph shocks with some 1/4 20 bolts. I removed the sway bar to help weight transfer as well remove weight. These mods caused the frontend to sit 1 3/4" higher than stock, so I put my trusty floor jack under the drivers side framerail first. Broke out the trusty torch and heated up drivers side spring and lowered jack very carfully to desired height. Repeted on passengers side. Be careful, not to lower the car too much while the spring is a glowing. I use Comp Enginerring 70/30 shocks up front. I use JEGS bolt in frame connectors and some cheap gas shocks on the rear. Traction bars round things up.

This combo has run a best time to date of 12.96 @ 103.50 mph on the motor and 11.46 @ 123.11 mph with NOS. (Nitrous) Laughing Gas. Needless to say the track told me I needed a roll bar if I wanted to run quicker than 11.50's.

The car is all steel and still have side impact rails in doors and it weighs 3250 and 3470 with driver, do the math.

New heads on page 2.