whats needed to run a th400 behind a 5.3 LM7
05-04-2009, 06:20 PM
#1
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whats needed to run a th400 behind a 5.3 LM7 OK i was told to search,but F@#5 there are a million pages here,and I did search and didint find what i need..
I am putting a 5.3 LM7 in my 85 Regal,want to run a TH400,do i need an adapter of some sort or iwll it cbolt right up
Thnks Dennis
I am putting a 5.3 LM7 in my 85 Regal,want to run a TH400,do i need an adapter of some sort or iwll it cbolt right up
Thnks Dennis
05-04-2009, 06:34 PM
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go to summit or HUGHES performance.
Easy way out...
buy the LS1 adapter (spacer) about $58.00
Buy the LS Flexplate about $115.00
**(you could use factory flexplate and longer flywheel bolts)
Thats it... and don't worry about the missing bolt. Thats the way GM designed it.
Easy way out...
buy the LS1 adapter (spacer) about $58.00
Buy the LS Flexplate about $115.00
**(you could use factory flexplate and longer flywheel bolts)
Thats it... and don't worry about the missing bolt. Thats the way GM designed it.
05-06-2009, 10:34 AM
#6
I used the GM spacer and bolts. There is an extra set of holes on the flywheel that fit perfectly for the th350/400 converters. These holes aren't raised like the others so I used a couple washers between the flywheel and converter and it works great.
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05-06-2009, 04:17 PM
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