I had a variety of rocker studs on hand last year, various lengths, and they all had virtually the same shank (unthreaded area) length.
I bought two packs of ARP 200-8747 washers, to use between the nut and the pivot ball of the rocker. These have a 0.437 i.d. (fits nicely over a 7/16" stud) and a .875"o.d. (so it is slightly small than the pivot ball). The thickness is 0.120" which gives almost 2.5-turns more adjustment.
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'73 T/A (clone). Low budget stock headed 8.3:1 455, 222/242 116lsa .443/.435 cam. FAST Sportsman EFI, 315rwhp/385rwtq on 87 octane. 13.12 @103.2, 1.91 60'.
'67 Firebird [sold], ; 11.27 @ 119.61, 7.167 @ 96.07, with UD 280/280 (108LSA/ 109 ICL)solid cam. [1.537, 7.233 @93.61, 11.46 @ 115.4 w/ old UD 288/296 108 hydraulic cam] Feb '05 HPP, home-ported "16" D-ports, dished pistons (pump gas only), 3.42 gears, 275/60 DR's, 750DP, T2, full exhaust
My webpage http://lnlpd.com/home
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