Pontiac 400 Motor Top End Refresh

[bhm1712]

Here's what i've been up to the last 2 months. Decided to bite the bullet and do the top end as it was burning a lot of oil through the valve stems.

Pretty obvious once i got the heads off what had been going on.

Many thanks to Autopontiac for the machining of the valve guide bosses to accept a positive lock valve stem seal!

I'll let the photographs do the talking.




































































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[Davy J]

Well done that man.

[jonbullnose]

sounds healthy mind you you will have a lot more pressure in the cylinders now then before as im guessing there was a fair bit of valve seat recession as per usual on the 400s