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Old 01-19-2017, 01:43 AM   #32
americanmusc1e
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Join Date: Jan 2009
Location: Austin, TX
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Re: Which manual tranny did you choose for your LS swap?

Please respond with the details (including manufacturer) on what you used for:
1) Manual Transmission Type and Model NV3500 out of a C/K1500 (they have a different slip yoke in a S10 apparently). Started out with a 89 SM465. recently converted to nv3500

2) LS Engine Type and Motor Mount Adapters Used (did the motor need to be moved forward?) 2000 5.3. bone stock with headers and a CAI. Used ebay motor plates. I'm roughly 1" further back than the old sbc

3) Mechanical or Hydraulic Actuation? If Mechanical, what did you use for Z bar attachment to engine block? Hydraulic. hydraulic master from 89 C2500. SM465 used 89 C2500 hydraulic slave with custom bell housing adapter. NV3500 uses hydraulic throwout bearing from 99 C1500 with a fitting to adapt the clutch line to -3AN

4) Flywheel Type and Size The clutch and flywheel work with both transmissions. Factory 4.8/6.0 flywheel from amazon. dowel pins removed to fit the clutch (Sachs)
5) Clutch and Pressure Plate Type and Size 12" sachs "hd" clutch for 1970 C20 w/396. pressure plate holes slighly enlarged.

6) Bellhousing Type The SM465 used a mid-80s aluminum bell for a sm465. Nv3500 bell is integrated

7) Pilot and Throw-Out Bearing Types Chevrolet Performance Roller Pilot Bearings 12557583

8) Cross Member Type Factory Th350 Crossmember with the top frame mounts removed. factory th350 trans mount.

9) Any type of other critical parts needed (spacers ,etc?)

10) Year of your truck and did you have to modify any sheet metal? low hump cab and SM465 yes! high hump either fits no problem.

11) Level of difficulty from 1-10 (10 being most difficult) SM465 to nv3500 swap is much easier than doing oil pan gasket and rear main seal with the engine in the truck

Also, please include any other additional information you can add that might help another out when doing this. Anything you can think of no matter how small the detail! Pics would be great too.

Also, just your general feeling on how happy (or not) you were with the final outcome and if you would you do it again (or already did). Maybe even some comments on how you use the truck (daily driver or 1/4 mile, etc.). Much appreciated!! I'm never going back to SM465 unless i'm towing a house. I have 3.08 gears right now which makes it even worse.
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