Head casting #'s
can someone identify the casting # 8947041 please? :bigears
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Originally Posted by vt65
(Post 1572775963)
can someone identify the casting # 8947041 please? :bigears
..68......327.........."Right angle" casting identifier, 64cc chambers, good HP head, used in trucks, no accessory holes 3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head 3947041X...69-70...302/350......"Right angle" casting identifier, 64cc chamber, 165cc intake port, accessory holes, good HP head 3951598....70......400..........76cc chambers 3964286............350 3965742. |
Originally Posted by midyearvette
(Post 1572776017)
are you sure the first # is not a 3??
..68......327.........."Right angle" casting identifier, 64cc chambers, good HP head, used in trucks, no accessory holes 3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head 3947041X...69-70...302/350......"Right angle" casting identifier, 64cc chamber, 165cc intake port, accessory holes, good HP head 3951598....70......400..........76cc chambers 3964286............350 3965742. |
Originally Posted by midyearvette
(Post 1572776017)
3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head |
Originally Posted by JohnZ
(Post 1572786566)
Bad info - that head was never used on a 302. It was used on the '69 L-48 (350/300hp) Camaro SS; has the 1.94"/1.5" valves. :thumbs:
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Originally Posted by midyearvette
(Post 1572786673)
hmmmm....the info .came from mortec...i guess you never know....:toetap:
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casting numbers
a good reference book I have is 1955-82 Corvette by the numbers by Alan L. Colvin
it shows Head#3947041 on page 153 apply to 1969 350 cu. 300 HP, unverified on the 350 HP, and 1970 350 cu 350 & 370 HP. In the notes section it states the head is identical with #3782461 (a 327 head used in 1965 and 1966) except for a redisgned combustion chamber, the addition of a temperature sending unit boss and 3 accessory bolt holes added to the end of each head. This head was interchanged on some models with #3927186 and 3927187. hope this helps |
Originally Posted by midyearvette
(Post 1572786673)
hmmmm....the info .came from mortec...i guess you never know....:toetap:
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Originally Posted by dn69427
(Post 1572787746)
a good reference book I have is 1955-82 Corvette by the numbers by Alan L. Colvin
it shows Head#3947041 on page 153 apply to 1969 350 cu. 300 HP, unverified on the 350 HP, and 1970 350 cu 350 & 370 HP. In the notes section it states the head is identical with #3782461 (a 327 head used in 1965 and 1966) except for a redisgned combustion chamber, the addition of a temperature sending unit boss and 3 accessory bolt holes added to the end of each head. This head was interchanged on some models with #3927186 and 3927187. hope this helps |
Originally Posted by dn69427
(Post 1572787746)
a good reference book I have is 1955-82 Corvette by the numbers by Alan L. Colvin
it shows Head#3947041 on page 153 apply to 1969 350 cu. 300 HP, unverified on the 350 HP, and 1970 350 cu 350 & 370 HP. In the notes section it states the head is identical with #3782461 (a 327 head used in 1965 and 1966) except for a redisgned combustion chamber, the addition of a temperature sending unit boss and 3 accessory bolt holes added to the end of each head. This head was interchanged on some models with #3927186 and 3927187. hope this helps |
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