Are these Double Hump heads? - Team Camaro Tech
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post #1 of 4 (permalink) Old Aug 8th, 01, 07:29 AM Thread Starter
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Michael
 
Join Date: Jul 2001
Location: Arlington TX
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Hi everyone, recently there was a topic on heads and there casting numbers, I was wondering what mine were. The seem to be the famous double hump heads I hear about, but am not sure. The casting numbers on the head are:
3917291
D257
Any help would be great.
Michael
Old School for life

75 Camaro
350 .040 over, Froged TRW pistons, Double Hump heads with 2.02/1.60 value and fully ported and pollished, Comp Magnum 280H, Comp 1.52 Roller tip rockers, Edelbrock Air-Gap intake, Holley DP 700CFM, MSD powered, Flowtech Long tube headers with full 2.5 into a pair of Flows, TH350 with B&M 2600 stall, 3.73 out back
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post #2 of 4 (permalink) Old Aug 8th, 01, 07:50 AM
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Location: Grand Ledge, MI 48837 USA
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291 heads were used from 1962-1969. HP levels were from 275 to 350. Valve size was either 1.94/1.5 or 2.02/1.6 They did both. They have 64cc chambers with no accessory bolt holes and were double hump heads. Hope this helps.

Your heads were made on April 25, 1967.
D = April
25= 25th day
7 = 1967

[This message has been edited by kurt6325 (edited 08-08-2001).]
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post #3 of 4 (permalink) Old Aug 8th, 01, 09:32 AM
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check out: www.mortec.com
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post #4 of 4 (permalink) Old Aug 8th, 01, 09:50 AM Thread Starter
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Michael
 
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Location: Arlington TX
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Thanks for the detail on the heads, I was looking for info like that. Thanks a bunch!

Michael
Old School for life
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