George Hurst knew what he was doing. He had first approached Pontiac as early at 1967 but was declined. Pontiac suggested he try Olds, the rest is history!
Gotta ask, would there have ever been a W-30 without the success of the ‘68 and 1969 Hurst Olds 455?
That is true but not with the 455 which is point the article and my reply. Not to mention that the hp and tq in the ‘66 &’67 didn’t come close to the ‘68 to ‘71 455 and other later model V8s until the decline from government regulations demanded cleaner emissions thus killing the muscle car until recently. My point about George Hurst was that he helped make mid-size cars with higher cubic inch engines ready available to the market. Yes, Chevy had COPO and individual dealer optioned engine swaps but that was not readily known by the average public or if it was, not affordable. For less than $700, you got a increased cubic inch engine not available any other way, a huge forced cold air intake scoop, working Rear deck foil, Hurst race designed shifter with proven shifting improvements, special exterior two tone paint and hand pinstriping. You had to pay multiple times that for a specially ordered COPO, Yenko, Baldwin-Motion, Nicky or Berger car just for a engine size increase. Hurst was first to bring racing inspired credibility to the masses at a reasonable price. And his success bred improvements within the Industry straight from the manufacture in the final days of the muscle car craze, IMO!
My rotisserie restored
1969 Hurst Olds 455 Convertible tribute with date coded ‘69 455 with Hurst ground cam and “D” heads and Posi-track with Dual gate shifter. Drop the top and cruise or leave it up with factory original Air, tilt wheel and power bucket seat.
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At first I couldn’t post photos at first when reading the article. But after leaving the email article and signing in to the Hagerty site, I went back the the original story and clicked on the reply button under the articles last button as in this photo,
I got the reply box with a mountain photo icon and I clicked on it to attach to my second reply.
About the same time TQ and HP ratings went from Gross to Net, compression ratios also dropped. Therefore the later model engines would have had somewhat less actual power, especially the high performance engines that needed high static compression to compensate for very late intake valve closing angles. That's assuming the camshafts stayed the same.