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I called ARP again today regarding an oversize head stud kit for the L engines. Apparently they have bot looked into the option, and the guy in special orders recommended to have the z car and L engine people post a request and recommendation for the kit. So that being the case here is the link to the request for the kit. The standard kit is 202-4206 and the oversize kit would be an 11mm Z 1.5mm pitch thread. Two studs a 9ea 5.900" stud and a 5ea 6.770" stud. Guys this is an easy upgrade. The difference in the hole size is .040" so when you drill the hole there is still some thread left from the 10mm thread, so using an 11mm X 1.5mm tap is very easy to do. The tap will locate on the old threads so screwing up the threaded hole IS POSSIBLE if you are a gargoyle with a tap, but DIFFICULT to do. The gains in the holding pounds of the new stud is about 3000 pounds, well worth the effort. So if as many of you as possible can fill out the form on the ARP site, they just may decide to do the new over size kit. Here is the link to the form: https://arp-bolts.com/p/kitsuggestions.php so please take the time to fill out the form and let's see if they will go for the upgrade kit. Your help in the matter would be very much appreciated and good for all of the L engine guys.
 
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