2008 Cobra Jets belong in Stock

[mtkawboy]

Seems to me that the 50 chosen few didnt have any problems running the Canadian CJ heads against everyone else that didnt have then at the time

[GUMP]

How much HP did a bone stock L72 or ZL1 Camaro make back in 1969? Not the published numbers.

[art leong]

Originally Posted by X-TECH MAN

Acid porting is a "misnomer". The "acid" and now today "Media blasting" just hides the port work being done. Its been more than 20 years since I first became aware of it and the "powers to be" just turned thier heads exceot for the S/S head rule change. Let the games begin.

I know it was done in 1979 I have quite a story about that. Won't get into it here.
And NO we never ran anything but a "true" stock head.( A look at our MPH could verify that).One of the main reasons we quit stock eliminator in 1981. If we continued to race in stock, we would have been forced to do it. And if we were to get caught I didn't want "the world" to think we were doing it all along.
Thats is why I get hostile when somebody talks bad about boost on the turbo cars. To raise airflow on a turbo car it costs about a dollar. How much is it to acid port, chemically clean, media blast,etc a head and intake manifold? Run a "stocker" cam? ETC. ETC.
I always thought stock should be kept as low buck as possible. I remember winning the York US 30 invitational and having to spend the Monday following the race at the track because they paid us by check and the banks weren't open till Tuesday. Once we made the semi finals we spent what gas money we had on food, knowing we were in the money.

[Jeff Lee]

Amazing how "off topic" you guys can go here!

[Tim Kish]

You think people are crying about the Cobra Jets, allow a ZR1 corvette to run Stock. Since from the factory this car has: Titanium Rods, Titanium Valves, CNC ported heads, a dry sump oil system, tubular exhaust manifolds that are as good as most headers and the same demon blower as the Cobra Jet ( different housing but same size displacement blower). And come to think of it, with all that and at a larger displacement than the Cobra Jet (6.2L vs 5.4) its only rated at 638HP. And to get that 638HP the factory exhaust system has vacuum actuated cutouts to bypass the mufflers.

The key everyone keeps missing is that NHRA's system uses what they call a HP rating but if there is a single car out there that actually only produces the rated HP level it can't run the index. These new performance cars come from the factory with a large percentage of the tricks that get Stockers to the level they are today as legal mods above and beyond the base HP rating. As such they can not be compared on the same scale.

[junior barns]

A few years ago I remember reading a post about aero (drag coeficiant) on cars posted by Matt Morgan
This was back when Top Stock just started in IHRA. It showed the diff in #'s between 68,69 Camaro, corvettes, and the (at the time) new firebirds. Astonishingly the numbers were almost identical! If I remember correctly it was his estimate that unless the car reached 150mph you would not see any benefit in the body.

My point is

If this is true I'm sure the Mustang probably is'nt any better in a wind tunnel than the newer firebirds which would take the aerodynmics out of the equation.