TH350C tips

[matt69olds]

Can you dual-feed the direct clutch in a th350c? I seem to recall hearing that the converter wont lock when you dual-feed. Any truth in that? This trans is going in my dads 81 GMC truck 4X4 ( was deisel powered,now has a 455 Olds !) I dont want to have to remove the trans and transfer case later to install the center seal if this mod wont work. Any other high performance tech tips for a 350C? I love this forum, I learn somthing new almost every day! Thanks!

 

[jakeshoe]

Dual feeding shoudn't cause any issue.

Jake

 

[GNeric]

Been dual feeding both TH350 and TH350c trannies since I started 21 years ago and no adverse affect on the lockup trans at all.

 

[darkhorsebob]

You'll have to plug the reverse feed side of the direct clutch in the case. This is where the pump assembly mates to the case.Otherwise the converter will not lockup. Use a 5/16 cup plug and leave 4th sealing from the end off the stator support.

 

[matt69olds]

Works for me! Thanks for the help, looking forward to getting this truck on the road again!:smile: