1966 GTO 421??

[442w30]

There is a thing called PHS, which stands for Pontiac Historical Services. They will send you an invoice of your car.

Next time you see the guy at a show, ask him if he has the factory invoice proving his car is a 421.

As men have fragile egos, at this point you will be on your own. [img]/ubbthreads/images/graemlins/burnout.gif[/img]

[rafbody]

I learned my lesson on egos when I questioned a guy about his '69 Z/28 and he got mad and said it is a z/28 with the 302. [img]/ubbthreads/images/graemlins/bs.gif[/img]It is an X-44 car, column shift auto and factory a/c. I left him alone after that.

Russ

[442w30]

I've had a few run-ins too. Was never questioning the legitimacy of their cars. Just Baby Boomers gone wild. But sometimes people don't know any better.

[A100]

I'm pretty sure Royal Pontiac was doing 421 conversions on GTO's by then... but to the best of my (limited) knowledge there were no factory 66' 421 GTO's made

[Norm reynolds]

There was one car that did come from the factory Jim wagners had the 421 put in a GTO for a test car for car & driver magazine at the time they were told it had a 389 in it Jim wanted to really impress the magazine guys and I guess to help sell more cars
It was not till many years later that Jim confessed that car never had a 389 but a 421 and that he pulled one over on car & driver magazine guys

[442w30]

That car did not come with a 421. It was a transplant.

[Chevy454]

Diego:

Did you get to hear John Sawruk speak in Stanton at the PS event? Was WAY COOL. If I'm not mistaken, I believe he had a couple of stories about the 421 swap fiasco.