th400 question
Thread Starter
Staging Lane
Joined: Jun 2010
Posts: 68
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th400 question first question is, can i keep my flywheel (m6) and just buy the adapter kit that comes with longer bolts and a few things or do i need to change flywheels and all that.. the other thing is how do i get the speedometer to read right? thanks for any help
You will need an automatic flexplate and a you can get a torque converter for the TH400 that will bolt directly to the stock LS1 flexplate. What are you putting the transmission in? That will help figure out what you will have to do to make the speedo work.
Thread Starter
Staging Lane
Joined: Jun 2010
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my ls1 has a m6 flywheel on it, and in the garage sits my th400 with a normal converter. theres a place that sells and adapter kit that is just bolts and spacer and they say its all you need.. is this true? and its goin in a 67 chevy c10 but i was wanting to take the gauge cluster from my camaro to save me money on gauges.. so it would be all like factory but in the c10 but with a th400 instead of a m6 so thats what i was wondering what to do about the speedo
You cannot use a manual transmission flywheel with an automatic transmission. No one makes an adapter for that.
You need a flexplate and crank spacer.
Thread Starter
Staging Lane
Joined: Jun 2010
Posts: 68
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ok , didnt know that... i just got an auto flywheel from a buddy. so now i should be good to go
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Staging Lane
Joined: Jun 2010
Posts: 68
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no, if you have an auto flex plate, that will work. The flexplate is your flywheel. You will need a converter to go from an LS1 flexplate to a TH400. FTI, yank, etc can make one for you.
Thread Starter
Staging Lane
Joined: Jun 2010
Posts: 68
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so i have to get a converter made? i cant use a normal converter, then the adapter plate with the longer bolts and spacer? because i already have a converter and im on a tight budget
To adapt an old th400 with it's old style converter to an LS1 you need a flexplate and crank spacer.
What to do about the speedo, get a reluctor wheel and vss that fits the th400. These are factory parts.
What to do about the speedo, get a reluctor wheel and vss that fits the th400. These are factory parts.
