<VV> PG questions

[Frank DuVal]

That sounds good, Bob, but how do I tell which PG is which in my pile?

Also, is there a difference in LM/EM torque converters?

Frank DuVal

Yes, if the diff is still attached it is easy...

BobHelt at aol.com wrote:

> 
>
>Guys,
>Is there any difference between a EM PG and a LM PG?  If  there is, is it 
>significant (like, don't put a EM PG into a  LM)?
>Thanks,
>Andy K.
>
>
>
>Hi Andy,
>Yes there is a big difference between the Powerglide transmissions used on  
>the 140/145 CID engines and the 164 CID ones. That difference is that the 
>LM  trannys used higher internal pressures to accommodate the higher torques 
>of the  LM engines. So it is always advisable to use a LM PG tranny with a 
>LM engine and  vice-versa. 
> 
>Think if it this way. The manual transmission engines used different clutch 
> pressure plate pressures to match the engines' torque capabilities. There 
>were  at least four different pressure plate pressures in production to 
>accomplish  this. So why did the factory spend the money to match PPs to the 
>applications?  So that there would be no unwanted slip and with long reliable 
>life. The same  applies to the PG trannys too. Sure you can "get-away" with 
>using an 80 hp  clutch PP on a 164 CId engine. But it's risky. Same applies 
>to the PGs  too.
>Regards,
>Bob Helt
>
>  
>