1969 Oldsmobile 455 Big Block

This is a 1969 Oldsmobile 455 big block that I purchased several years ago. My original intent was to install this in my 1981 TransAm, but eventually sold the vehicle. I've put a lot of money into rebuilding this engine, but have yet to actually install it into anything, or even start it for the first time. Below is a run-down of the engine, and all the parts that were used in it's assembly.

Important components:
  - 1969 Oldsmobile 455 Big Block (69 "F" Block, F1 [High Nickle Content])
  - 1969 Oldsmobile 455 "C" Large-Port Heads (2.07:1 Intake / 1.72:1 Exhaust Valves, Stainless Steel)
  - 1970 Oldsmobile 455 HO Toronado "K" Intake
  - TRW Forged Pistons .030 Overbore (w/ Chrome Moly rings)
  - 1969 Hardened Crank / Forged Rods (Shot peened / polished)
  - Joe Mondello JM-20-22 Camshaft (1400-5800 RPM Range, 0.496 In. Lift / 0.512 Exh. Lift)
  - Crane 1.6:1 Roller Rockers
  - Cloyes Tru-Roller Roller Timing Chain
  - 1972 Rochester QuadraJet (Tuned for a 72 Olds 455)
  - GM Performance Parts Hi-Volume Oil Pump
  - Light bowling / port and polish

- More work on the 455, and hit the junkyard!

     I did a bit more work on the Olds 455 today, and also visited the junkyard. There was a nearly complete 1966 Oldsmobile 425 Toronado. The Toronado has some great parts for my engine because it's really the only way I'll be able to stuff this into my Trans Am. The motor was basically complete minus the carb. I snagged all of the accessory brackets including the water pump, alternator, and A/C brackets. I also took the waterpump pulley, crank pulley, and the power steering pump and pulley. Unfortunately, I completely forgot to take the alternator pulley, don't know what I was thinking! I'll post some pictures later when I get them cleaned up and installed on the motor, but right now, they are just dirty grimey brackets not worthy of a picture. Check out the old "50s" style valve covers I put together. There's a company that stamps these old school wire looms. I took a newer style valve cover, welded some upside down bolts to the top, and used the acorn nuts for the finished look. Not half bad if I do say so myself!

- In with the new...

     Well, I just got back from the machine shop. Total cost of the motor (parts, labor, machining costs) came in around $3,200 bucks. It's a bit more than I really wanted to spend, but with the combination I have, people are figuring (compared to similar combos) That I should expect anywhere from 430-450hp and 550-600 ft-lbs of torque. To me, that's just absolutely sick. I've never owned a motor even remotely close to this powerful. 430 doesn't seem like a lot when newer 6 liter V8 cars now come with 400 standard (in the GTO, Corvette, etc...) but they still don't come close to 550 ft-lbs of torque! I'm really excited about this engine!

- What kind of 455 big block?

     I wasted no time in identifying the block. Turns out, it's a 69 455 from a "Full Sized" Oldsmobile. It may not be a Hurst / Olds, but it's the next best thing. Basically, this motor is an "identical core" to what you would use when rebuilding a Hurst / Olds motor. It may not have the right numbers, but it's basically the same motor. The block is identical in every way, shape, and form... and the cyl heads are also the same casting. The difference is in the cam, the pistons, and the way the cyl head was prepped. The ports on the cyl head are identical to the H/O, but the valves that were installed on the H/O were larger. This is easily done on my cyl head, making it basically a H/O cyl head (there would be no other distinguishing marks to differentiate it. I'm pretty excited. With that, I've dissasembled the motor, and dropped it off at the machine shop.

- An Oldsmobile 455 big block?

     I know that I already have a motor, but I scored big time on a solid 1969 Oldsmobile 455ci big block. It's complete with everything. The brackets, the water pump, the alternator, the exhuast manifolds, everything. I couldn't ask for much more... and all for $300. It was quite a drive (from Valdosta, Georgia) but I was able to haul it down with my Harbor Freight trailer and my 2002 Crown Victoria. I snapped a few pictures, loaded it into the garage, and went to bed.


More coming...