CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: wisemanz28 on March 13, 2011, 08:41:27 PM

Title: 186 cylinder heads
Post by: wisemanz28 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?

Title: Re: 186 cylinder heads
Post by: crobjones2 on March 13, 2011, 11:39:57 PM

Based upon what I have seen, they would line up for your motor build time frame

Title: Re: 186 cylinder heads
Post by: wisemanz28 on March 14, 2011, 01:53:52 AM

Thanks

Title: Re: 186 cylinder heads
Post by: wisemanz28 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.

Title: Re: 186 cylinder heads
Post by: 68Zproject 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?

Title: Re: 186 cylinder heads
Post by: crobjones2 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

Title: Re: 186 cylinder heads
Post by: tmodel66 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.

Title: Re: 186 cylinder heads
Post by: wisemanz28 on March 19, 2011, 02:59:51 AM

Just checked my block, it has a casting date of August 22nd of 69.