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How to ID Solid or Hyd Roller Cam Without Teardown #705589 05/23/10 10:57 AM 05/23/10 10:57 AM
Joined: Aug 2008 Posts: 773 San Antonio, Tx B bulletpruf OP super stock
bulletpruf OP super stock B Joined: Aug 2008 Posts: 773 San Antonio, Tx	Fellas - Didn't get a whole lot of information on the 426 hemi in my Roadrunner when I bought the car, and really need to know whether the roller cam is hydraulic or solid. Is there a simple way to id this without pulling the cam out? Thanks! Scott Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: bulletpruf] #705590 05/23/10 11:48 AM 05/23/10 11:48 AM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	You can pull a valve cover and see how many rockers have loose lash-wiggle ability. THere should be more than half of them on base circle, so they should wiggle easy if a solid. You should be able to easily stick an .010" feeler gauge between rocker tip and valve stem on the loose ones. If you can't it may be a hyd. If you can spin the pushrods easily with your fingers, then you could crank one down a couple turns of adjuster, or until pushrod is hard to turn, walk away from the car for 1/2 hour or so, come back to it and if the rod then turns easily, it would most likely be a hyd cam.

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: buildanother] #705591 05/23/10 11:52 AM 05/23/10 11:52 AM
Joined: Nov 2007 Posts: 21,831 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,831 Kirkland, Washington	or pull a rocker arm off and fish a lifter out with a magnet and inspect. Instant 100% certainty there.

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: buildanother] #705592 05/23/10 12:02 PM 05/23/10 12:02 PM
Joined: Jul 2006 Posts: 4,319 Puyallup, WA S StealthWedge67 master
StealthWedge67 master S Joined: Jul 2006 Posts: 4,319 Puyallup, WA	Quote: You can pull a valve cover and see how many rockers have loose lash-wiggle ability. THere should be more than half of them on base circle, so they should wiggle easy if a solid. You should be able to easily stick an .010" feeler gauge between rocker tip and valve stem on the loose ones. If you can't it may be a hyd. If you can spin the pushrods easily with your fingers, then you could crank one down a couple turns of adjuster, or until pushrod is hard to turn, walk away from the car for 1/2 hour or so, come back to it and if the rod then turns easily, it would most likely be a hyd cam. Once a valve cover is off, you should be able to feel whether there's lash in the valvetrain or not. Hydraulic will have tension on all, solid will have some lash figured in. LemonWedge - Street heavy / Strip ready - 11.07 @ 120

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: Pacnorthcuda] #705593 05/23/10 12:12 PM 05/23/10 12:12 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: or pull a rocker arm off and fish a lifter out with a magnet and inspect. Instant 100% certainty there. Kinda hard to do with roller lifter with the tie bars & what not.... FWIW I've read that Hemis don't do hydraulic rollers well do to the extra height of the lifter body creating a severe angle on the pushrods..

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: 1_WILD_RT] #705594 05/23/10 03:39 PM 05/23/10 03:39 PM
Joined: Aug 2008 Posts: 773 San Antonio, Tx B bulletpruf OP super stock
bulletpruf OP super stock B Joined: Aug 2008 Posts: 773 San Antonio, Tx	Thanks, fellas. It's a solid roller. Scott Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos

Re: How to ID Solid or Hyd Roller Cam Without Teardown [Re: bulletpruf] #705595 05/23/10 07:48 PM 05/23/10 07:48 PM
Joined: Aug 2008 Posts: 773 San Antonio, Tx B bulletpruf OP super stock
bulletpruf OP super stock B Joined: Aug 2008 Posts: 773 San Antonio, Tx	Also found some paperwork when going thru my files; someone wrote down some part numbers of pieces/parts for the motor. Didn't find a cam part number but did find a part number for Comp solid roller lifters, so I think the case is closed on this one. Thanks, Scott Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos

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