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E-Bodies.org Cuda Challenger Forum

Technical Shop => Engine, Transmission & Rear End => Topic started by: 73440 on June 03, 2020, 04:26:46 AM

Title: Cylinder head date code ?
Post by: 73440 on June 03, 2020, 04:26:46 AM
Pulled the valve cover to confirm cylinder head casting number and am wondering if the other number is a 10,000 day calenders date code or is it a day / year code ?
The 10,000 seems more plausible with block date and casting numbers.
Haven't found head date code info in MMC Detroit Body of Knowledge book.
Title: Re: Cylinder head date code ?
Post by: 6bblgt on June 03, 2020, 11:07:35 AM
cast # 2406516

date code 02155 = 02/15/65

1965 big block 361/383/413/426
Title: Re: Cylinder head date code ?
Post by: 73440 on June 03, 2020, 05:35:00 PM
Thank you @6bblgt (https://forum.e-bodies.org/mlist/6bblgt_211) .
Hmm, on a 440 2536430-6 block cast 10-3-67.

Who knows the changes thru the years.
Title: Re: Cylinder head date code ?
Post by: Chryco Psycho on June 03, 2020, 11:43:56 PM
Most people hate those castings , install big valves & hardened seats , do some port work & they mae a lot of power , they are closed chamber heads & are great for making quench !
Title: Re: Cylinder head date code ?
Post by: 73440 on June 04, 2020, 02:57:06 AM
Thank you @Chryco Psycho (https://forum.e-bodies.org/mlist/chryco-psycho_4) .
Sounds like they have some good attributes, just need some upgrades to realize their full potential.
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