ENGINE YEAR

DESCRIPTION

CASTING # Part #
w/o cam
 General Motors Inline 6 Cylinder 
194,
230,
250
 
62-67 w/o A.I.R., large spark plugs, 
temp send in water outlet (not in head)
  4601
68-69 w/o A.I.R., large spark plugs, temp sending unit in head   4602
250,
292

 

 

 

 

 

 
68-69 w/A.I.R., large spark plugs, temp unit in head   4603
70-85 w/o A.I.R., small spark plug, 
head & intake manifold separate
  4604
70-85 w/A.I.R., small spark plugs, 
head & intake manifold separate
  4605
75-76 Integral head & manifold, 7 wide valve cover  7585, 0696 4613
77-78 Integral head, narrow (5") valve cover, w/o A.I.R. 7131, 2012 4614
77-78 Integral head, narrow valve cover, w/A.I.R. 14002012 4617
79-85 Integral head, tubular manifold, 2 barrel, 
specify 4 or 5 A.I.R. holes
3364 4615
4.2L       4642
292
(4.8L)



85-90 w/large A.I.R. holes, 1/8" NPT temp sending unit hole,
manifold separate
3411149, 86411148, 93413990 4629
85-90 w/o A.I.R. 3411149, 86411148, 93413990 4628
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