Valve cover on AFR heads
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Valve cover on AFR heads Hello all,
I have a pair of AFR 210 cylinder heads on my LT1. I've read that the stock valve cover bolts should be torqued to 106 inch pounds. I torqued mine to 80 inch pounds which felt awfully tight especially was a 3/8 in ratchet. I'm a little afraid to go any tighter. I do not want to strip the threads in the cylinder head, but I also do not want any oil to leak. l am using a Fel-Pro silicone gasket. Every single surface including the gasket itself was cleaned with degreaser 2 X. Does anyone have any experience with aftermarket cylinder heads and valve covers and their specific torque numbers?
Thanks!
I have a pair of AFR 210 cylinder heads on my LT1. I've read that the stock valve cover bolts should be torqued to 106 inch pounds. I torqued mine to 80 inch pounds which felt awfully tight especially was a 3/8 in ratchet. I'm a little afraid to go any tighter. I do not want to strip the threads in the cylinder head, but I also do not want any oil to leak. l am using a Fel-Pro silicone gasket. Every single surface including the gasket itself was cleaned with degreaser 2 X. Does anyone have any experience with aftermarket cylinder heads and valve covers and their specific torque numbers?
Thanks!
Thread Starter
Launching!
Joined: Apr 2015
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Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
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TECH Regular
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From: Tucker, GA
Just as an FYI, some of the AFR LT heads have incorrect bolt hole depths. They were drilled way too shallow and the bolts will bottom out well before proper torque has been reached. You may need to either cut down the VC bolts or put washers under them to get a good seal.
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
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Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
Likes: 2
Just as an FYI, some of the AFR LT heads have incorrect bolt hole depths. They were drilled way too shallow and the bolts will bottom out well before proper torque has been reached. You may need to either cut down the VC bolts or put washers under them to get a good seal.
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
Great Point thanks for sharing.
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Launching!
Joined: Apr 2015
Posts: 200
Likes: 2
Just as an FYI, some of the AFR LT heads have incorrect bolt hole depths. They were drilled way too shallow and the bolts will bottom out well before proper torque has been reached. You may need to either cut down the VC bolts or put washers under them to get a good seal.
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
I had a set of AFR 195's and every single bolt hole was too shallow. It made for a very challenging install and soured me on AFR stuff from that point on
I just took three to four threads off each Bolt. They went in excellent at exactly torque specs in the book 106 inch pounds each. Thank you.
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From: Tucker, GA
I'd advise you to check all the exhaust manifold holes, as well as the ones that hold in the accessories and coil/icm bracket. On the AFR set had, all of them were too shallow.
Thread Starter
Launching!
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Please let these threaded holes be deep enough. I seriously will be pissed if they are too shallow....
Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
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