[Cliff R]

I don't deal in generalizations, just facts.

Nothing I post up here is Google'd/copied/pasted from the efforts of others.

If I'm sitting there waiting patiently in line at the dyno and there is a 455 ahead of mine with ported iron heads, XE284 cam, single plane intake, and aftermarket 850cfm carb and it can't make 400hp I'm taking notes. What do you folks need on here? You ask for details, information, testing, experiences with these things, even "butt meter" evaluations, so I'm giving you some of it.

So we're on the SAME dyno, SAME day, SAME operator, SAME correction factors and that engine isn't even close to mine even using all those "high performance" parts. I guess I should have told him to carry it to Westech so he could have a dyno sheet showing it made 500hp and 590tq instead.....FWIW.

About 6 months after I dyno'd my engine and did the KRE head testing a local customer here called and wanted to "duplicate" my combination, 6X heads, iron intake (modified), RAIV cam, high ratio rockers, Q-jet, factory HEI, etc.

He did just that and even asked to borrow my carb on dyno day and I let him.

He goes to the SAME dyno, same operator, etc and not making 360hp despite their best efforts that day.

So after getting all the air let out of his balloon he called the shop the next day and talked to me about it. I asked several questions.

Did you zero deck the block......."NO"

Did you check valve train geometry when ordering pushrods....."NO".

Did you use high ratio rocker arms....."NO"

Did you degree the cam....."NO" (At that point he tells me that instead of using the Crower 60919 cam he used the Comp XE-274 cam instead) He was told by several of the "big" Pontiac shops and at least one "guru" that the "modern" lobe profiles would leap taller buildings and walk on more water....blah...blah...blah.

I decided to quit being critical of his build at that point, it doesn't help anyhow.

Will is correct with these things, we should NOT make "generalizations" and also realize that the skill levels of some are not equal to others, nor is there attention to detail, ability to tune, or even set up the car to effectively use the power...FWIW......Cliff