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Thread: TH400 flex plate gap
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03-06-2016 #1
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- Join Date
- Aug 2004
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- San Bernardino, CA
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- 883
TH400 flex plate gap
I test fitted my 10" speedway torque converter to my LS/th400 combo. The converter plugged into the trans just fine, two clunks on the input shaft. what do you all think of this gap? its about .20, i stacked all the washers from the ARP bolt set i have and its a perfect fit. do you think i should use all 3 washers or just 2 washers and pull the converter forward a bit? Im using 7/16 x 1.25" ARP bolts. i need to order more ARP washers.
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03-07-2016 #2
Registered User
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- Sep 2010
- Location
- Beach Park IL
- Posts
- 2,849
You need less than .125" and more than .060" clearance between the flex plate and the converter.
Too much clearance and you give up engagement on the pump and that can end badly.
Too little clearance and as the converter expands it has nowhere to go and starts eating the pump up.....and that can end badly.Donny
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