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Author Topic: gt40 heads do I need pedistal rockers? 06expy ¯ Member # 7805 posted                              Just picked up a set of gt40 iron heads. I would like to know if I need pedestal roller rockers or can I just install studs and use stud mounted rockers. any help would be grate Posts: 101 | From: Denair | Registered: Jul 2007  |  : norcalfiddy ¯ Member # 11207 posted                              either one. -------------------- 600HP 1996 7.3L powerstroke single cab short bed race truck Posts: 3393 | From: Brentwood | Registered: Aug 2011  |  : wilit Mustang Messiah Member # 3367 posted                                 Studs come in 3/8 or 7/16 inch threads, pedestal bolts are 5/16 inch. I believe Crane cams has a retrofit kit with a 5/16 lower thread to mount in the head and a 3/8 stud for the rocker. It's part number 36655-16 and summit has it for $120. You also need to make sure you have hardened pushrods too when you convert to guideplates. [ June 06, 2012, 11:21 AM: Message edited by: wilit ] -------------------- "If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr. Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003  |  : 06expy ¯ Member # 7805 posted                              Thanks for the reply Posts: 101 | From: Denair | Registered: Jul 2007  |  :

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