Thread: 1972 K20: TH350 or 4L80?
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Old 07-09-2019, 02:55 PM   #4
GRADYS Performance
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Re: 1972 K20: TH350 or 4L80?
First gear in a TH350 is 2.52. First gear in a 4L80E is 2.48. Basically the same.
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