Author Topic: 186 cylinder heads  (Read 1977 times)

wisemanz28

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186 cylinder heads
« on: March 13, 2011, 08:41:27 PM »
I'm looking at a set of 3927186 heads on ebay, the casting dates are H 14 9, my engine pad reads H 25 9. Would these dates be okay for my engine or are they too close?

crobjones2

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Re: 186 cylinder heads
« Reply #1 on: March 13, 2011, 11:39:57 PM »
Based upon what I have seen, they would line up for your motor build time frame
Chris
69 SS 350

wisemanz28

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Re: 186 cylinder heads
« Reply #2 on: March 14, 2011, 01:53:52 AM »
Thanks

wisemanz28

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Re: 186 cylinder heads
« Reply #3 on: March 16, 2011, 12:11:56 AM »
After rechecking those heads the dates are H 15 and H 18, I'm hoping these dates are okay for my August 25 th motor. What is the rule of thumb for date coded engine parts ( such as heads)? How close can you get to the engine pad date? Any help is appreciated , thanks.

68Zproject

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Re: 186 cylinder heads
« Reply #4 on: March 16, 2011, 01:47:53 AM »
Do you know the cast date on the block?  That's what I would go by.  If the heads cast dates are somewhat close to the block cast date I think you would be alright.  On other posts, I think JohnZ said there was an example or two of blocks being cast one day and assembled the next day?
68Z28

crobjones2

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Re: 186 cylinder heads
« Reply #5 on: March 16, 2011, 02:43:16 AM »
My block was cast on may 22nd and assembled on the 25th, I believe the norm is to be within a week of casting
Chris
69 SS 350

tmodel66

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Re: 186 cylinder heads
« Reply #6 on: March 16, 2011, 02:59:18 AM »
My block was cast on the 23rd and assembled on the 26th so that's about the same as yours and my heads are 9 and 11 days off the block cast.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

wisemanz28

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Re: 186 cylinder heads
« Reply #7 on: March 19, 2011, 02:59:51 AM »
Just checked my block, it has a casting date of August 22nd of 69.