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Re: How to Install a 4L80E into 1967 - 72 C10 / C20
Nice work on the conversion! That's how T56 Speedo does it as well. He basically bores the tail housing at a center distance matching the TH350/700R4. Then an aluminum insert is epoxied into the bore. The insert holds a typical TH350 pencil gear housing. The final trick is a drive gear lathed from steel bar. This is set screwed to the 4L80E output shaft.
$350 is reasonable considering the parts and labor involved. Not to mention, this is still more cost effective and more reliable than an electric drive.
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1971 C20 Custom Deluxe, HT383, 4L80E, 3.73 Locker, 4 Wheel Discs
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