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02-10-2012, 10:51 PM
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#1 |
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Registered User
Join Date: Dec 2009
Location: Gap PA
Posts: 280
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Transfer case swap.
Well, basically I'm removing the SM465/NP208 from a 1988 Blazer and replacing it with a rebuilt SM465/NP205 from a 1980 Blazer.
The 12 bolt rear is already in it, so the front and rear driveshafts will bolt right in. Going to use the 1988 hydraulic bell since it's already set up for that. Have the crossmember, and new mounts are going in. Anything I'm missing? ...what's funny is this whole idea started because the Blazer needs a rear main 
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1991 Mustang GT Vert, T-5 w/ Pro 5.0, Trick Flow upper & lower, BBK cold air intake, 3:73, BAMA chip, etc. 1988 K5 Blazer, [coming soon] TBI 400, SM465/NP208, 12 bolt rear, 3:08's, looks like a 1980. 1998 Jeep Grand Cherokee 4.0 fully loaded daily driver! Where there's a will, there's a rig! |
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02-10-2012, 11:10 PM
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#2 |
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Registered User
Join Date: May 2008
Location: Waukesha, WI
Posts: 904
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Re: Transfer case swap.
The rear driveshaft may need work if the 208 has a slip yoke and the 205 has a bolt on yoke.
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70 stepside 76 blazer 86 Silverado 20 Max Trailering 6.2 Crew 71 Nova SS My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=363634 |
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02-10-2012, 11:41 PM
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#3 |
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Registered User
Join Date: Dec 2009
Location: Gap PA
Posts: 280
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Re: Transfer case swap.
I have the bolt on yoke driveshaft
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1991 Mustang GT Vert, T-5 w/ Pro 5.0, Trick Flow upper & lower, BBK cold air intake, 3:73, BAMA chip, etc. 1988 K5 Blazer, [coming soon] TBI 400, SM465/NP208, 12 bolt rear, 3:08's, looks like a 1980. 1998 Jeep Grand Cherokee 4.0 fully loaded daily driver! Where there's a will, there's a rig! |
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02-14-2012, 10:12 AM
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#4 |
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Registered User
Join Date: Aug 2011
Location: Long Island, NY
Posts: 84
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Re: Transfer case swap.
The hole in the floor for the shifter didn't quite line up when I converted my 85 shortbed GMC into a 1 ton with the 208-205 swap. It wasn't really a big deal but it was something that I didn't really put much thought into until the trans and case were in place. One thing I can tell you is that if you have a factory large style cat it'll have to go because it will hit the transfer case. The trans tunnels bolt into the 84 and earlier trucks but 85-up get spot welded in. If you got the tunnel out of the 80 you could always drill out the spot welds and swap them
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1970 Chevelle SS396 1984 K5 Blazer -First Truck! 1999 Big Block K2500 'Burb |
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02-14-2012, 10:14 AM
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#5 |
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Registered User
Join Date: Aug 2011
Location: Long Island, NY
Posts: 84
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Re: Transfer case swap.
ohh almost forgot that if you want to keep the 4x4 switch for the dash light you'll either have to splice the wires or swap out the switch. Same thing with the reverse light switch on the top plate of the transmission. Again, no big deal but much easier to get to before the trans is in place.
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1970 Chevelle SS396 1984 K5 Blazer -First Truck! 1999 Big Block K2500 'Burb |
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