Cosmic Charlie

Olds W-31 Dyno Party - High Performance Small Block Tested at Nick's Mopar Garage

Dyno Pulls and Adjustments start at 19 minutes
I really enjoy Nick's Channel though this posting is a bit scattered
Amazing the reported Numbers were What the Factory said +-
Fun Fact - his dyno booth glass window if bullet proof glass from a bank

You Tube

SY2455

Thank you Charlie for posting this. I tried but couldn't figure out how to post it with a link. Lol Must be old age.

v8al

olds 307 and 403

Yeah, he mostly does Mopar but I like him. I would have liked to see a high rpm pull. Plus hard to say what the compression actually is and what was done to the heads, I believe the owner said a 2.07" intake valve. Didn't the Dave's who worked at Oldsmobile said 350 HP at higher rpm? You would think it would make that with full length headers. It did make the factory claimed HP number, slightly short on torque.

Fun71

I remember one of the Daves saying the GM claim of 325 hp @ 5400 RPM was accurate, but it kept making power above that - 360 hp just before 6000 RPM, I think.

69CSHC

Good stuff Charlie, thanks for posting. I enjoyed the entire video thoroughly.

Olds looks to have definitely advertised the W31 on the money. Vintage road tests confirm HP as well... Car Life's road test of a 69 shows 270 HP net. Junker to Thumper showed all accessories eat 43 HP on an old school V8 and then add the header gain...