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Speaking of 426H valve train... #3103478 12/19/22 12:25 AM 12/19/22 12:25 AM
Joined: Nov 2003 Posts: 1,362 Out of the State of Confusion blue_stocker OP pro stock
blue_stocker OP pro stock Joined: Nov 2003 Posts: 1,362 Out of the State of Confusion	I'm curious to what problems a 6500 rpm mechanical flat tappet cam bracket engine would encounter with production adjustable rockers...140-150# on the seat and around 400-420# on the nose...HMM?!? Last edited by blue_stocker; 12/19/22 06:59 PM. I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them. Thomas Jefferson Freedom must be repurchased by every new generation General Daniel Jones, WW2 Tuskegee Airmen

Re: Speaking of 426H valve train... [Re: blue_stocker] #3103497 12/19/22 03:03 AM 12/19/22 03:03 AM
Joined: Jan 2012 Posts: 2,643 Stuttgart, Arkansas rickseeman master
rickseeman master Joined: Jan 2012 Posts: 2,643 Stuttgart, Arkansas	No problems. 2011 Drag Pak Challenger

Re: Speaking of 426H valve train... [Re: blue_stocker] #3103556 12/19/22 12:00 PM 12/19/22 12:00 PM
Joined: May 2019 Posts: 712 Lake Villa Il INTMD8 super stock
INTMD8 super stock Joined: May 2019 Posts: 712 Lake Villa Il	Originally Posted by blue_stocker I'm curious to what problems a 6500 rpm mechanical flat tappet cam bracket engine would encounter with production adjustable rockers...140-150# on the seat and around 400-420 on the nose...HMM?!? I think you would be fine. Running the stock rockers on mine at 7600 and 245 seat 613 over the nose. 69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700

Re: Speaking of 426H valve train... [Re: INTMD8] #3103577 12/19/22 01:23 PM 12/19/22 01:23 PM
Joined: Dec 2006 Posts: 2,109 Byron, NY W.I.N. Racing top fuel
W.I.N. Racing top fuel Joined: Dec 2006 Posts: 2,109 Byron, NY	Originally Posted by INTMD8 Originally Posted by blue_stocker I'm curious to what problems a 6500 rpm mechanical flat tappet cam bracket engine would encounter with production adjustable rockers...140-150# on the seat and around 400-420 on the nose...HMM?!? I think you would be fine. Running the stock rockers on mine at 7600 and 245 seat 613 over the nose. with both replys, Have run higher presures on Stock wide pads to 8500 with no issues. Last edited by W.I.N. Racing; 12/19/22 01:26 PM. '01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd

Re: Speaking of 426H valve train... [Re: W.I.N. Racing] #3103613 12/19/22 03:06 PM 12/19/22 03:06 PM
Joined: Aug 2005 Posts: 4,101 Yes S sixpakdodge master
sixpakdodge master S Joined: Aug 2005 Posts: 4,101 Yes	Originally Posted by W.I.N. Racing with both replys, Have run higher presures on Stock wide pads to 8500 with no issues. I saw an AH car at Indy with wide pads on the exhaust side within the last few years, and it was not the slowest car there either.

Re: Speaking of 426H valve train... [Re: sixpakdodge] #3104220 12/21/22 12:02 PM 12/21/22 12:02 PM
Joined: Jan 2003 Posts: 6,392 nielsville, minn. Q quickd100 master
quickd100 master Q Joined: Jan 2003 Posts: 6,392 nielsville, minn.	I run a set of corrected widepad rockers on my motor. .767/676 lift. In 13 years I have broke one intake rocker. I've also gone though a couple sets of springs, retainers and keepers, and pushrods. The valvetrain is good to at least 8000.

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