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Old 05-26-2013, 09:29 PM   #1
naystcb
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1971 C-20 Longhorn SM420 to 700R4 conversion

I am swapping out the SM420 in my 1971 Cheyenne Longhorn C-20 with a 700R4 and need to know if and what type of flexplate or flywheel I need to get to make this conversion work or can I use existing flexplate? Please advise.
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Old 05-27-2013, 08:11 PM   #2
clinebarger
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Re: 1971 C-20 Longhorn SM420 to 700R4 conversion

Quote:
Originally Posted by naystcb View Post
I am swapping out the SM420 in my 1971 Cheyenne Longhorn C-20 with a 700R4 and need to know if and what type of flexplate or flywheel I need to get to make this conversion work or can I use existing flexplate? Please advise.
Manual transmissions use a Flywheel, Autos use a Flexplate.

153 tooth flexplate & '92-'96 Corvette/Denso replacement starter...... Flexplate bolts, Torque converter bolts, & starter bolts are available from you local GM dealer
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Old 05-27-2013, 08:37 PM   #3
Clyde65
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Re: 1971 C-20 Longhorn SM420 to 700R4 conversion

What about an nv4500 5speed to keep it manual?
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