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Discussion Starter #1
Hi folks a newbie here.

I just picked up a pontiac 400 on the cheap but cant figure out what horsepower it is here are the codes

block casting 481988
engine code 0266845 (cant find this code on web anywhere)
date code a235
6x heads


im assuming its 1975 any info would be greatly appreciated

Thanks
 

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Discussion Starter #4
what do you think its worth I got it next to nothing guy wanted it out of his garage
Its a complete engine
Im going with a 455 in my 67 tempest clone and have no use for it

Thanks again
 

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If original bore, I would say 2-300. Since it is the more preferred block number, someone would want it to build a stroker motor. I had the identical motor with 5c heads and 4bbl manifold. Sold it for $425, was a good runner, and had a few extra goodies like aluminum valve covers, etc.
 
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