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akart · 10-03-2014, 03:21 PM

I have headers to install w/a 5/16 flange and a gasket about 1/16+. I'm looking to use Stage "8" locking bolts. Recommended size is 3/4" bolts. Seems that I will only have 3/8" of thread in the head. Is this correct? How deep is the threaded hole in the head. Engine is stock GM crate. Would like to order the right bolts before I tear things apart. Thank You!

10-03-2014, 03:21 PM	#1
akart Registered User Join Date: Sep 2014 Location: Manley Hot Springs Alaska Posts: 253	Header bolt length I have headers to install w/a 5/16 flange and a gasket about 1/16+. I'm looking to use Stage "8" locking bolts. Recommended size is 3/4" bolts. Seems that I will only have 3/8" of thread in the head. Is this correct? How deep is the threaded hole in the head. Engine is stock GM crate. Would like to order the right bolts before I tear things apart. Thank You!