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FED 387 · 06-17-2017, 07:46 PM

Have you ever checked the block and head for flatness? Recently? Also Cometic will tell you to use the "torque specs " that the head bolt or head stud manufacturer recommends SBC usually is 65 but if you are using ARP because of the lube they use to install the studs I'm sure you have to go higher --Even tho Cometic does not recommend it have you tried re torquing the heads to see if they are in spec just in case you mighta missed one-- However if its the ends leaking most likely the heads are not truly flat and might need to be resurfaced--FED 387

06-17-2017, 07:46 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 529 Liked 333 Times in 180 Posts	Re: cometic head gaskets Have you ever checked the block and head for flatness? Recently? Also Cometic will tell you to use the "torque specs " that the head bolt or head stud manufacturer recommends SBC usually is 65 but if you are using ARP because of the lube they use to install the studs I'm sure you have to go higher --Even tho Cometic does not recommend it have you tried re torquing the heads to see if they are in spec just in case you mighta missed one-- However if its the ends leaking most likely the heads are not truly flat and might need to be resurfaced--FED 387