1972 TH350 Torque Converter

[Gerrys72]

I am restoring a 1972 Camaro base model with a 307 and TH350 tranny. I know that there were no mods to the engine or tranny since the car has been in our family since purchased new. I believe the factory torque converter should be a 10.7" three bolt, 12" diameter with a 1.703" pilot. The one that was on it has a 9.25" three bolt pattern. Does anyone know why the torque converter would be different from what was supposed to be on it and how would this affect performance? I plan on rebuilding the 307 with a slightly larger cam. I just want a daily driver not a runner but want to know if I should change it out to what was supposed to be on there or what is currently on it.

Thanks.

 

[bigdav160]

A 9 1/2" converter (aka the Vega converter) is not stock with any V8 (or 6 cylinder for that matter).

 

[Gerrys72]

Thanks bigdav160. It would be interesting to know how this made it onto this car. I will be going with the stock setup.

Thanks

 

[Chevyforever]

Is the 9.25" bolt pattern quoted by the OP being confused as an od measurement by bigdav160 ?

 

[Gerrys72]

Is the 9.25" bolt pattern quoted by the OP being confused as an od measurement by bigdav160 ?

The TQ that came off the tranny had a three bolt hole pattern with 9.25" center to center.

 

[bigdav160]

I guess, in my haste, I misread the post. What's the diameter of the torque converter in question?

Sorry, I'm not familiar with a 9.25 bolt circle flexplate/comverter