Head casting #'s
01-16-2010, 04:18 PM
#2
Le Mans Master
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.
..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.
01-16-2010, 04:35 PM
#3
Safety Car
Thread Starter
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.
..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.
01-17-2010, 04:50 PM
#4
Team Owner
Member Since: Oct 2000
Location: Washington Michigan
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01-17-2010, 04:58 PM
#5
Le Mans Master
01-17-2010, 06:34 PM
#7
Instructor
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
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
01-17-2010, 07:21 PM
#8
Team Owner
Member Since: Oct 2000
Location: Washington Michigan
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01-17-2010, 07:51 PM
#9
Drifting
Member Since: Apr 2008
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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
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
01-17-2010, 09:15 PM
#10
Safety Car
Thread Starter
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
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
