Ad Radar
High Performance Pontiac
Click here to find out more!

Engine & head identification

  
High Performance Pontiac
Item Posts    Sort Order

Engine & head identification

 
daddy_ja daddy_ja
New User | Posts: 2 | Joined: 07/14
Posted: 07/26/14
04:57 PM

Hello all,  
I have been trying to identify what my engine came out of and if the engine and heads are matching.  They are currently in a 68 bird, which is not obviously what they came in.  I have been able to narrow down that the engine came out of a b-body car I believe, but from there I guess my research just isn't cutting it.  Here is what I have.

400 Block, XH with casting number 9790071 and the date code is kind of fuzzy, but I believe it is a229.  The front of the block also has the number 488635 on it, but it am not sure what that number is for.  My belief is this is a 69 block produced 22 Jan 1969.

The heads are 62 with what I think is a date code of a279. Not sure if they are ra1 or what.

Any help you could provide in figuring out what this motor came out of would be much appreciated.  

Thanks,
Jason  

shyrgfuh3 shyrgfuh3
Enthusiast | Posts: 496 | Joined: 11/13
Posted: 07/26/14
06:10 PM

XH code for 1968

1968 400 350 HP XH A 10.5 066 16 1-4 7028262 GP Block Casting # 9790071


this is the XH code for model year 1969

1969 400 350 HP XH A 10.5 066 62 1-4 7029268 GP Block Casting # 9790071


i have never seen heads dated after a block but i have not seen a ton of pontiac heads with the orig blocks.  

bigD bigD
User | Posts: 155 | Joined: 05/14
Posted: 07/26/14
10:54 PM

http://www.pontiacpower.net/castnum01.html

http://www.spottsperformance.com/engineid.htm

http://www.pontiacpower.net/engcode01.html

http://www.classicalpontiac.com/cgi-bin/cp/global/engine.cgi