Muncie M21 nouns?

Need to know 1st. gear ratio.Trying to choose a rear running out gear raito. 327 ci engine

Why does my engine hiss at big...



Answers:    Identification and ratio information is provide below. These grooves are typically cut across the clutch spline on the input shaft:

Muncie 4speed

Number of ID Groves 1st 2nd 3rd 4th
No groves 2.58 1.91 1.48 1.00
1 2.20 1.64 1.28 1.00
2 2.52 1.88 1.48 1.00

Possibly NOT a blown chief gasket?


Year 1963-1974 Type: M21 Ratio: 2.20 / 1.64 / 1.28 / 1.00 / reverse - 2.27

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