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Roller cam or not?

 
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journeyman
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Joined: 12 Jul 2007
Posts: 107
Location: Moscow
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PostPosted: Fri Mar 02, 2012 6:05 pm    Post subject: Roller cam or not? Reply with quote

Do all Gen 5's have roller cams?
I heard that all gen5 and gen6 motors had them and then that only gen 6 had them. What is the straight scoop?
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Big Dave
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Joined: 04 Dec 2005
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Location: Tampa Florida
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PostPosted: Sat Mar 03, 2012 3:53 pm    Post subject: Reply with quote

Gen V was a hydraulic flat tappet cam with standard lifter bores. It does have the spyder stands and the casting in the front of the block for a hydraulic roller cam but they were not machined. Only a Gen VI block has the tall machined lifter bores and all of the holes tapped ready to bolt in a hydraulic roller cam with dog bone lifter retainers (which limit total valve lift).

Big Dave
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