Nate S
Well-Known Member
Here's factory #'s. 383-4, 340-4, 426-2-4 are all mopar 10.75" converters, other big blocks are 11.75". A 400-4 would have had a 10.75".
Awesome! Thanks! They are a lot higher than I thought they would be from the Factory. It has the low stall sticker on it so, what RPM would that be approximately??Here's factory #'s. 383-4, 340-4, 426-2-4 are all mopar 10.75" converters, other big blocks are 11.75". A 400-4 would have had a 10.75".
View attachment 1078651
Figure stall speed is dependent on converter design, diameter and engine torque at appropriate rpm. The 340 and 383-4 had the same converter, just the 383 had more torque, hence the higher rpm. So if your "low stall" is the 11.75 and a 400 is closest to a 383 it's probably around 2000.Awesome! Thanks! They are a lot higher than I thought they would be from the Factory. It has the low stall sticker on it so, what RPM would that be approximately??
Ill leave it as is for now. It is the 10 3/4".Figure stall speed is dependent on converter design, diameter and engine torque at appropriate rpm. The 340 and 383-4 had the same converter, just the 383 had more torque, hence the higher rpm. So if your "low stall" is the 11.75 and a 400 is closest to a 383 it's probably around 2000.
This maybe of some help to you: I worked in the industry and still have a catalog on hand. From my catalog the following listings:Ill leave it as is for now. It is the 10 3/4".
Nothing wrong with a TQ. There's a guy in Spokane WA. that makes then look like and run like new. Had a customer that had one done for his 71 Duster. Wasn't cheap to get restored but he said it was worth every penny.I used to run TQ on my '64 and my '67 R/T wagon, until parts got harder to find. I always tried to use TQ from truck motors, with less emission stuff.