Pontiac 455 hp reduction

[oldskool]

Originally Posted by Glenn Briglio

Could someone explain the hp reduction listed yesterday on the two pontiac 455 combo's.

Don't think very many will have to worry about that change. That was a rare engine, SD455.

http://www.classracerinfo.com/Engine...0&MAKE=Pontiac

As far as I know, there is only one '73 Stocker & one '74 Stocker running that engine. Don't think those 2 will be in enuff heads-up runs in a season, to cause the other brands much trouble.

Considering the rarity of those heads, & current price, I don't think there will be a rush to use this engine.

But hey, what do I know.

Here's a 455 which I think could really use a big reduction. It's the '76 455. It has HUGE chambers, resulting in LOW compression, & from what I've read, poor flowing ports. But, from what I gather, somebody has to build one 1st, run it for a while, THEN ask for a reduction. I don't look for that to happen. I've never seen or heard of a '76 Pontiac running that engine. In fact, I've only seen ONE '76 Pontiac Stocker, of any kind.

http://www.classracerinfo.com/Engine...7&MAKE=Pontiac