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GRX · 08-22-2017, 10:29 AM

Yep. Obvious blown head gasket. That pitting is actually caused by 'cavitation' from compressed coolant I would say.

Not to scare you. Be sure to check radius of head combustion chamber for cracks too. Probably more than half the 235 heads I magnafluxed had one there. If not to water yet they can be in future.

08-22-2017, 10:29 AM	#16
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: Pitting in block/combustion chamber Yep. Obvious blown head gasket. That pitting is actually caused by 'cavitation' from compressed coolant I would say. Not to scare you. Be sure to check radius of head combustion chamber for cracks too. Probably more than half the 235 heads I magnafluxed had one there. If not to water yet they can be in future. __________________ 1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed.