[RLEngland]

What do you all make of this wheel? Notice the injection hole is closer to the spokes much like a 70 IC wheel. Looking at many examples of other years, I noticed in all of the 71 small ic, 72 ICX, and 73s with the same sculpting that the injection hole moved further away from the center. This would lead me to believe this is a 69/70 wheel. Unless 73 molds had different positions for the injection holes.

[Tellyshavilli]

Originally Posted by RLEngland

What do you all make of this wheel? Notice the injection hole is closer to the spokes much like a 70 IC wheel. Looking at many examples of other years, I noticed in all of the 71 small ic, 72 ICX, and 73s with the same sculpting that the injection hole moved further away from the center. This would lead me to believe this is a 69/70 wheel. Unless 73 molds had different positions for the injection holes.

What’s the circumference measurement on the grip? I have seen some 69 Trans Am formula steering wheels , obviously the thick one, but there is no IC on the backside.

[RLEngland]

Originally Posted by Tellyshavilli

What’s the circumference measurement on the grip? I have seen some 69 Trans Am formula steering wheels , obviously the thick one, but there is no IC on the backside.

It's thick at 3 7/8 in most places. As far as I know, all these wheels with the racetrack pattern on the back are very close to the same thickness. Who knows how many different molds they had. I'll bet the 69/70 wheels without the IC stamp come from the same set of molds as the ones with the IC stamp. For some reason a single mold or a few didn't have the IC. What I can't see happening is the 69/70 molds having the injection hole near the spokes and the 71-73 moving away from the center, then moving back towards the center like this one. That's why I don't think this wheel was cast in 73. There was definitely more than one mold, so maybe the injection holes were in different places. I guess we'd have to compare a lot wheels to figure that out.

[Tellyshavilli]

Originally Posted by RLEngland

It's thick at 3 7/8 in most places. As far as I know, all these wheels with the racetrack pattern on the back are very close to the same thickness. Who knows how many different molds they had. I'll bet the 69/70 wheels without the IC stamp come from the same set of molds as the ones with the IC stamp. For some reason a single mold or a few didn't have the IC. What I can't see happening is the 69/70 molds having the injection hole near the spokes and the 71-73 moving away from the center, then moving back towards the center like this one. That's why I don't think this wheel was cast in 73. There was definitely more than one mold, so maybe the injection holes were in different places. I guess we'd have to compare a lot wheels to figure that out.

Yes, it would be good for research if we could get several guys with original 1969 TAs with Formula steering wheels to send some pictures (must be original formula wheel ) and measurements . I don’t believe any of the 70 Trans Ams came with without any ic stamp on the backside of formula wheel ,at least none out of the several hundred I’ve researched and Documented but maybe one or two slipped through.

[Ramairnacho]

Originally Posted by Tellyshavilli

Yes, it would be good for research if we could get several guys with original 1969 TAs with Formula steering wheels to send some pictures (must be original formula wheel ) and measurements . I don’t believe any of the 70 Trans Ams came with without any ic stamp on the backside of formula wheel ,at least none out of the several hundred I’ve researched and Documented but maybe one or two slipped through.

Can you explain why my original wheel is a non stamped ic but has injection hole in same location? My car ra3 formula assembled in 1st week on March.