Head Cassting Numbers
Thread Starter
Instructor
Joined: May 2005
Posts: 229
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From: Oreland PA
Head Cassting Numbers
I have a set of heads with the following numbers, can anyone tell me what they are? Thanks!
First one: GM47 3927186
D60
15
Second one: GM 52 3991492
H260
16
The top 2 numbers are listed on top of each other. The 15 and the 16 were located in other areas of the heads
Thanks for the help
First one: GM47 3927186
D60
15
Second one: GM 52 3991492
H260
16
The top 2 numbers are listed on top of each other. The 15 and the 16 were located in other areas of the heads
Thanks for the help
Pro
Joined: Dec 2006
Posts: 665
Likes: 0
From: wilmington nc
The first set 3927186= 69-70 camel humps 64cc ascessory holes 302/350
The next set 3991492 = over the counter camel humps 64cc
here"s the info source http://www.mortec.com/castnum.htm
The next set 3991492 = over the counter camel humps 64cc
here"s the info source http://www.mortec.com/castnum.htm
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
look at the size of the valves and see if they have screw in studs......if they are the larger valve fuelie heads and have screw in studs those are decent old school heads
Thread Starter
Instructor
Joined: May 2005
Posts: 229
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From: Oreland PA
