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#1
02-12-2010, 08:51 PM
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1968 #16 heads question of HP rating
I have a pair of #16 heads dated 1968 and am wanting to know what codes determine what horse power rating.
The dot clock in the rocker valley is at the 9 position, to continue. . . . I have decoded: 9 pm on January 22nd of 1968 General Motors #16 The arrow to the 3 and the number 7 above the last exhaust port are my curiosity. I found two #16 head codes for '68 1st code is for a 400 engine at 330, 335, 350, 360 cc 72 High Output 2nd code is for a 428 engine at 375, 390 cc 72 Thumbnail preview attached Thanks for the insight Alex |
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