The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 350 TH pump lip seals

clinebarger · 08-28-2020, 10:23 PM

The case looks pretty good far as TH350 cases go (It does have a little wear). It also has a "Case Saver" installed in place of the factory "Anti- Clunk" Spring.

I usually recommend/install a 4L60/4L60E Center Support that utilizes a wider Roller Clutch, But you MUST watch the Lo/Reverse Clutch Clearance. I like .080" to .095"

I also like to use Late 4L60E/4L65E (Turbulated) Lo/Reverse Steels.......Here's some selectable thicknesses available from Raybestos..........
*.047" thick Part# 511594
*.069" thick Part# 511589
*.089" thick Part# 511591

The TH350 uses .099" thick Lo/Reverse Frictions & the 700R4/4L60/4L60E uses .087" thick Lo/Reverse Frictions......Either friction can be used to set the desired clearance.
Yes.....You can mix them together in the same stack!

08-28-2020, 10:23 PM	#16
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 350 TH pump lip seals - internal The case looks pretty good far as TH350 cases go (It does have a little wear). It also has a "Case Saver" installed in place of the factory "Anti- Clunk" Spring. I usually recommend/install a 4L60/4L60E Center Support that utilizes a wider Roller Clutch, But you MUST watch the Lo/Reverse Clutch Clearance. I like .080" to .095" I also like to use Late 4L60E/4L65E (Turbulated) Lo/Reverse Steels.......Here's some selectable thicknesses available from Raybestos.......... .047" thick Part# 511594 .069" thick Part# 511589 *.089" thick Part# 511591 The TH350 uses .099" thick Lo/Reverse Frictions & the 700R4/4L60/4L60E uses .087" thick Lo/Reverse Frictions......Either friction can be used to set the desired clearance. Yes.....You can mix them together in the same stack!