Mike Graham/Gary Summers

[Billy Nees]

Originally Posted by QuickII

I heard from a reliable source it was for altering the intake casting number, and booster modifications, not the head at all.

I have been told on numerous occasions by numerous Tech people (including Gracia) that NHRA Tech ONLY checks carb model,throttle bore and venturi size. Period.
If there has been a change in that policy, I'd sure like to know!

[Bob Mulry]

Originally Posted by Billy Nees

I have been told on numerous occasions by numerous Tech people (including Gracia) that NHRA Tech ONLY checks carb model,throttle bore and venturi size. Period.
If there has been a change in that policy, I'd sure like to know!

Billy,

I don't want to get pissy, BUT, so it's OK to polish the secondary bores on a Q-Jet, grind off all of the casting flash, remove he choke plate and machine off the choke horn????

CARBURETOR
Must be correct year, make, and model specified for car’s engine;
fuel or air bleed passages may be resized. Drilling idle holes in
primary
throttle blades permitted. Other modifications prohibited.
Sandblasting, grinding, flash removal, dry film coating, or any
other modification to carburetors prohibited. Replacement
carburetors permitted provided they are same model, type,
throttle bore, and venturi size. Computer carburetors use latest
model non-computer carb for engine application.

Doesn't look like it to me, but on the other hand...….

WTF do I know????

[Hacksaw]

Originally Posted by Billy Nees

I have been told on numerous occasions by numerous Tech people (including Gracia) that NHRA Tech ONLY checks carb model,throttle bore and venturi size. Period.
If there has been a change in that policy, I'd sure like to know!

You may be correct, but don't you think an official should drop the hammer if he sees a funky casting number mod? Of course. They are looking, maybe not checking.

[Billy Nees]

Originally Posted by Hacksaw

You may be correct, but don't you think an official should drop the hammer if he sees a funky casting number mod? Of course. They are looking, maybe not checking.

NHRA hasn't checked carb #s for years!

[Jeff Stout]

How about intake numbers altered or otherwise?

[Shadylane]

Originally Posted by Jeff Stout

How about intake numbers altered or otherwise?

They did on my car!

[Rich Biebel]

Issues with accepted parts has been going on for many years.

In 1966 the car I was partners on was thrown out at Indy for a Chevy cam that was not accepted even though it was the only cam you could buy from a Chevy dealer at the time. It was right out of the GM tube. We were the class R/UP and the winner was also thrown out. Not sure but I thought he was also tossed for his camshaft. Same engine/car combo. A few weeks after Indy we received a letter stating the cam we were tossed for was now accepted and ok!

Cheater (duration) cams may have been out there already but we did not have one.

50+ years later same stuff still happening

[Billy Nees]

Originally Posted by Rich Biebel

50+ years later same stuff still happening

Yes, it is. But it's not being fixed...........or caught. Depending on your point of view.

[Billy Nees]

Originally Posted by Jeff Stout

How about intake numbers altered or otherwise?

Thankfully, they still check them.