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#1
02-09-2010, 10:10 AM
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Re: MUNCIE METAL TAG ID
have a 3946797 tag. original. M20
not typo james 530.941.4399 
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#2
02-09-2010, 05:56 PM
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Re: MUNCIE METAL TAG ID
[ QUOTE ]
have a 3946797 tag. original. M20 not typo james 530.941.4399 [/ QUOTE ] That is what my M-20 has. I beleive that is correct for 69 Camaro with Z/28 or L78.
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Don't believe everything you read on the internet ... Ben Franklin
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#5
02-23-2010, 11:55 PM
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Re: MUNCIE METAL TAG ID
The 3946797 is for the 1969 M20 Trans. I'm looking for 3946798 if anyone has an extra.
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67 Z/28 Butternut Yellow 69 Z/28 Rally Green 69 Z11 Pace Car (2) 69 RS/Z28 Lemans Blue / Olympic Gold 2010 2SS RS Aqua Blue 68 Z/28 Lemans Blue C7 Corvette 68 SS Lemans Blue 69 RS/Z28 Maroon JL8 66 Corvette Ermine White L75
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#6
02-24-2010, 06:43 AM
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Re: MUNCIE METAL TAG ID
From the assy manual for 1969 Camaro (don't know about Chevelle or 67-68 Camaro)
3950356 is for RPO M20 with L48, L34, L35, LM1 3946797 is for RPO M20 with Z28 & L78 3950316 is for RPO M21 with L34 3946798 is for RPO M21 with Z28 and L78 3950318 is for RPO M22 with Z28 and L78 Evidently, from this and from the RPO spreadsheet file in pdf available at camros.org, you could not order a close ratio (M21 or M22) unless you had L34 (M21 only) or Z/28 or L78. Now, for another question: Why is there a different tag number for the M20 behind a Z/28 or L78 as opposed to the one behind an L48 engine? They would be identical outside dimensions. The Z and the L48 would have identical shifters and brackets. Was there anything internally different between a Z/28 M20 and the regular small block SS M20? There had to be something different about these transmissions to warrant different tags. Maybe the standard rear gear ratio?
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#8
02-19-2013, 03:48 AM
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Re: MUNCIE METAL TAG ID
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lynn</div><div class="ubbcode-body">From the assy manual for 1969 Camaro (don't know about Chevelle or 67-68 Camaro)
3950356 is for RPO M20 with L48, L34, L35, LM1 3946797 is for RPO M20 with Z28 & L78 3950316 is for RPO M21 with L34 3946798 is for RPO M21 with Z28 and L78 3950318 is for RPO M22 with Z28 and L78 Evidently, from this and from the RPO spreadsheet file in pdf available at camros.org, you could not order a close ratio (M21 or M22) unless you had L34 (M21 only) or Z/28 or L78. Now, for another question: Why is there a different tag number for the M20 behind a Z/28 or L78 as opposed to the one behind an L48 engine? They would be identical outside dimensions. The Z and the L48 would have identical shifters and brackets. Was there anything internally different between a Z/28 M20 and the regular small block SS M20? There had to be something different about these transmissions to warrant different tags. Maybe the standard rear gear ratio? </div></div>I don't think they had identical shifters.I don't think they had identical shifters. One would have had a Hurst and the other a Muncie.
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