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View Full Version : Head studs and head gasket



majestic
01-20-2020, 04:51 PM
Which ARP head studs are the correct/best? I see the 151-4202 and 151-4702 available. Which ones are better or preferred. Also, looking to get a cometic head gasket. Any recommendations on that?

SchoolBoy
01-21-2020, 07:23 PM
Which ARP head studs are the correct/best? I see the 151-4202 and 151-4702 available. Which ones are better or preferred. Also, looking to get a cometic head gasket. Any recommendations on that?

The thing with the cometic gasket is it requires a surface finish that most shops can't actually give. Its a level of smoothness that can't be discermed by hand. It take an expensive scanner.

brsvo
01-22-2020, 08:50 AM
I don't know what your goals are but the standard Fel Pro works great for most app's.

majestic
01-22-2020, 08:58 AM
Ended up going with a McCord 7062M and the 151-4202 studs. I remember the McCord being an upgrade over stock and found one online. Machine shop said the 4702 undercut studs would be for an aluminum head.

MikeFleming
01-23-2020, 08:38 AM
... s would be for an aluminum head. You will need to do something to allow the use of a MUCH largerr outer diameter hardened washer under the nuts. The washers that come in the kit are not appropriate for soft heads.

See the Red baron Power thread for my experiences with the sift aluminum used in the Essy heads and how the washers sink, not allowing hte fasteners to stay tight..

majestic
01-23-2020, 09:50 AM
You will need to do something to allow the use of a MUCH largerr outer diameter hardened washer under the nuts. The washers that come in the kit are not appropriate for soft heads.

See the Red baron Power thread for my experiences with the sift aluminum used in the Essy heads and how the washers sink, not allowing hte fasteners to stay tight..

I don't have the aluminum head.

MikeFleming
01-24-2020, 06:16 AM
Nevermind.