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Old 10-11-2003, 06:20 PM
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need confirmation on heads

since we have quite the cord of heads i have been running numbers and i just need to know if im right about some of the more interesting heads

first set
3970126

1967-1970, 194's 150's


second set
3890462

1967 202 160's

and i ran numbers on a 350 of my dads V0715TMT apparently these motors came out of vettes but this particular one did not but were calling it the vette motor now

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Old 10-11-2003, 07:16 PM
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I looked in my book and it says the first set of heads are from a truck. It does not mention valve size. The second set are refered to as "462's". Those can be either 194 0r 202's. I have a set with the same numbers and they are 194's. If the ones you have are 194's you could have them upgraded to 202 by a machine shop but quite honestly I doubt that you would ever notice the difference and could keep the money for something more important. Good luck!!
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Old 10-11-2003, 07:41 PM
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only info I could find on the 126 casting was 1.94 1.50 327/350, no chamber size was given, but I`d think they have large chambers on them. the 462 are good heads for a street bound small block, they have decent ports and respond well to a pocket port and some chamber unshrouding. these heads have 64cc chambers, 160cc runners and came on 327 engines, as Coleman stated they used both valve sizes depending on which application. if you plan to use either set of these heads on your 400, make sure you have the steam holes drilled.
1974 TMT 350 conv.cab 160 2 C-50 & 5000
1980 TMT 350 fwrd cab, a/t, Cal M LT9 170 4 C-30 & 3500
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