04-02-2014, 10:07 PM | #1 |
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Join Date: Mar 2014
Location: pennylvania
Posts: 3
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TH400 to SM465
hello. i recently purchased a 1987 gmc 2500. it has the turbo 400 trans and np208 transfer case. i am hoping to do a manual swap on it to a sm465 trans. what all would i need to do this? thanks
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04-02-2014, 10:13 PM | #2 |
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Join Date: May 2010
Location: Lewis County, WA
Posts: 1,523
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Re: TH400 to SM465
Besides the trans/transfer case, you'll need to decide if you want a mech or juice clutch...the pedal kits are different. You'll also need a flywheel, clutch, pedal box, floor hump (or cut yours), linkage or hydro components. You'll also likely need some driveshaft work done. Probably some stuff I've forgotten too.
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'77 K35 - 454, SM465/NP205, 4.56 D60/14bFF |
04-02-2014, 10:19 PM | #3 |
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Join Date: Mar 2014
Location: pennylvania
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Re: TH400 to SM465
so not necessarily 'hard' , just finding all the parts to do it
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04-03-2014, 09:04 AM | #4 |
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Join Date: Dec 2012
Location: Hanston, KS
Posts: 94
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Re: TH400 to SM465
Correct. It's easiest to have a donor truck. I would look for a transmission mated to an np205 with a fixed rear yoke. The slip yoke versions are also acceptable if you want less driveline hassle.
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04-03-2014, 03:57 PM | #5 |
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Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,228
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Re: TH400 to SM465
You will need a bell housing to go with the SM465. It has a larger center hole then the 3 speeds or earlier models.
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04-03-2014, 05:54 PM | #6 |
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Join Date: Mar 2014
Location: pennylvania
Posts: 3
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Re: TH400 to SM465
what would be easier? a manual or hydraulic clutch?
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1987, gmc 2500, sm465, th400 |
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