Need some help on what I should do to my 1978 280z. I had to change the head gasket due to coolant leaking into the combustion.... When I sent the head to the machine shop for resurfacing they found that it was cracked near the exhaust valve on cylinder 3... I read that this is common with the N47 heads.
I am looking for a replacement head and I found a P79. I was considering buying the P79 head and resurface it along with a valve job. Then I plan on getting new flat top pistons (0.020"-0.040" oversized) and replace the dished pistons I have in my current N42 Block and obviously I will have to bore out the block..
I currently have 2.5" exhaust, headers, K&N intake. Is this the correct step I should take or should I look for N47 or N42 head instead?
I plan on using the stock cam.
Thanks in Advance