GTO + Motion = ?

[Vern B]

In that era Michigan plates began with two alphabetic characters followed by four numbers. It's probably just a coincidence that these plates began with GM. The manufacturer plates had an M in the middle of several numbers, similar to copo9566aa's post of the car with the dealer plate. The car in copo9566aa's post was probably driven to the track from Royal Pontiac with the dealer plate. I think Motown has had an M plate or two for sale in the past. We used to always be on the lookout for M plates when cruising the Drive-In's on Woodward Ave back in the 60's. Saw some neat cars back then if you kept your eyes open. The M plate cars always attracted attention. I still watch for them today, as I live in an area of Michigan that is used extensively for testing and filming commercials.

Vern Bauer

[copo9566aa]

About these GM plate
This is not a Michigan Dealer plate but a GM corporate licence plate.
GM used these plate for prototype test cars. [img]/ubbthreads/images/graemlins/beers.gif[/img]

[copo9566aa]

All SuperCars is welcome to Motion Performance Club [img]/ubbthreads/images/graemlins/biggthumpup.gif[/img]

[Bobcat]

The connection, Royal Pontiac/ Motion Performance was through CARS MAGAZINE. Jim Wangers would supply the cars to Joe Oldham For articles to be published the magazine. Joe would then take the Pontiac's, GTO's Firbirds etc. to Joel Rosen at Motion to attend to the cars. After all the cars had been driven to NY from Detroit ad Joe felt they would need a tune up. The cars where generally returned to Royal broken. Specific tune up instuction accompanied the cars along with mounted slicks in the trunks. Other than the CARS MAGAZINE/ Joe Oldham connection, there really wasn't anything else.

[tjs44]

those are 455 heads,look at the missing header bolt

[copo9566aa]

This is a remake of the original "HP Cars" test
Possibly the author hack a little bit and ad this picture
to the article. [img]/ubbthreads/images/graemlins/eek.gif[/img]
This is not new with MuscleCars SPS. [img]/ubbthreads/images/graemlins/headbang.gif[/img]

[copo9566aa]

Full page 2 [img]/ubbthreads/images/graemlins/biggthumpup.gif[/img]
Judge by yourself..... [img]/ubbthreads/images/graemlins/beers.gif[/img]

[Steve_Hoog]

I just looked at a set of 73 SD's in a pic, they don't have the dummy hole and they have the fifth altenator bracket hole boss.

Another pic has the II's, they look just like your pic but they don't show the intake side. Without the fifth hole boss.

Assuming these pics are accurate of course.

[Steve_Hoog]

Live inspection shows the 72 7F6 to be the only round port with the dummy hole.

Can that correlate with the date of your article?