Header trouble.

I use RTV only, no gaskets, on the drag race engines,


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also use these studs- easy on or off, No water leaks
http://www.jegs.com/i/ARP/070/245-1301/10002/-1

The studs say they are for a 3/8 thread, the heads on the 360 are 5/16. Are you sure these work with the la heads? Just curious because I was looking for a set of studs.