440 roller cam advice needed **UPDATE***
#925828
02/10/11 09:51 PM
02/10/11 09:51 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
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Striving for excellence
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Posts: 18,493
Granite Bay CA
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I'm tired of wiping out camshafts. I know the switch to a roller setup comes with a stiff price tag, but I might be ready to pull the trigger. I have a 440 based 493 with 10.8 to one squeeze. Edelbrock 84cc heads unported, Performer RPM intake, Barry Grant 850VS carb, TTI 2" headers and 2 1/2" exhaust. I know that there a few different manufacturers of roller cams and lifters including Comp cams, but I dont know anyone in my area with experience with any. I want to stay hydraulic so I can keep my stock shaft rocker arms. I am not looking for cam specs here, I'll consult the vendor for that. I just wanted some suggestions on WHICH products are favored by the Mopar faithful. Waddaya say, guys?
Last edited by Frankenduster; 02/15/11 02:20 AM.
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Re: 440 roller cam advice needed
[Re: 440forPOWER]
#925831
02/10/11 10:21 PM
02/10/11 10:21 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Get with Dwayne Porter (802) 951-1955 and have him get you the RIGHT cam for your combo!! You wont be sorry!!
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 roller cam advice needed
[Re: 440forPOWER]
#925835
02/10/11 11:47 PM
02/10/11 11:47 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
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NE Oklahoma
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No, Dwayne does not work at Hughes. Dwayne is one of the best, if not the best Mopar head porter and cam grinders. His business is Porter Racing Heads. IMO, Hughes=
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 roller cam advice needed
[Re: Kern Dog]
#925837
02/11/11 01:50 AM
02/11/11 01:50 AM
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Joined: Sep 2010
Posts: 25 Virginia
red79
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member
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Posts: 25
Virginia
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just run the right oil (zinc is the key), or put in an additive when you change your oil. a properly cared for hydraulic should outlive the rest of your moving parts. roller cam on a 440 is not worth the cost of a conversion imo, and all the oiling mods are a PITA.
Last edited by red79; 02/11/11 01:52 AM.
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Re: 440 roller cam advice needed
[Re: red79]
#925839
02/11/11 02:56 AM
02/11/11 02:56 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
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Striving for excellence
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Quote:
and all the oiling mods are a PITA.
?????????? OILING mods? What the heck? Please explain!
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Re: 440 roller cam advice needed
[Re: red79]
#925840
02/11/11 04:05 AM
02/11/11 04:05 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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master
Joined: Oct 2003
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NE Oklahoma
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Quote:
, and all the oiling mods are a PITA.
Please elaborate....
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 roller cam advice needed
[Re: hemigod426]
#925841
02/11/11 04:06 AM
02/11/11 04:06 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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[quotedoes porter grind them or just pick out cams and have someone else cut it?
Porter picks out the lobes, Comp grinds them.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 roller cam advice needed
[Re: frank]
#925843
02/12/11 12:04 AM
02/12/11 12:04 AM
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Joined: Jan 2007
Posts: 7,664 IN
ahy
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IN
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An observation... if you are running stock stamped steel rockers they are OK up to .5" lift or a bit more if you want them to last. A roller for a 493, even a mild one, is likley to have more lift than that. Even with hydraulic lifters a high performance cam should use adjustable rockers. Bottom line, if you go the roller route you will probably need new rockers.
If you want to keep it simple, another flat tappet may be the best. With good lifter bores which you have and good oil they last. I run Rotella T plus STP because it has enough zinc, is readily available and cost effective. There are lots of other oil solutions.
There are some additionl things you can do to make it even better. Lifters with a small EDM oil hole to the cam face are available from Hughes, "Howards Lifters" and others. Also, if you order the cam from Comp, you can have it nitride hardened for an extra fee.
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Re: 440 roller cam advice needed
[Re: Kern Dog]
#925844
02/12/11 12:39 AM
02/12/11 12:39 AM
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Joined: Oct 2005
Posts: 4,957 WI
Dcuda69
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Joined: Oct 2005
Posts: 4,957
WI
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Quote:
Quote:
and all the oiling mods are a PITA.
?????????? OILING mods? What the heck? Please explain!
Curious myself? I have a Comp solid street roller in my 470" low deck. Only mod I did was the Hemi pick-up. Probably not at all necessary....but I did it anyway. The cam (XR280R) rocks!! Idles at 800 rpm w/ 14" vac. and pulls easily through 6k. Made 420HP at 5500 rpm at the tire...so I'm good!!
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Re: 440 roller cam advice needed
[Re: dodgeboy11]
#925846
02/15/11 02:37 AM
02/15/11 02:37 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
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Striving for excellence
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OP
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I pulled the motor yesterday and tore it down this afternoon. This was my first full teardown since the smoking issue reared its ugly head a few years ago. No smoking gun was found, but here are the findings. Maybe some faithful members can shed some light on the following: Both head gaskets seemed to be sealing well. There was some uneven torque to crack the head bolts loose though. All lifters and cam lobes looked great, so I have some newfound faith in the flat tappet cams since I switched to the valvoline VR1 oil last year. I kept the lifters in order so I may actually keep the cam and reuse it. All rod and main bearings had some slight wear, but nothing bad. The crank journals look great. There was some very slight pitting in the oil pump rotors, so I will replace it. The skirts on the pistons had some scuffing, but not too bad. I'll let the machinist determine the severity and if they can be polished or coated and reused. ALL the rings look fine, not sharp edged or chipped. The tops of the pistons and the combustion chambers were uniformly colored, slighly caramel brown in the middle, and the exhaust valves were tan in color. The cylinder walls were smoother than I expected, but had no up and down scratches. I would have expected a 3000 mile motor to still show some cross hatch pattern. The smoothe cylinder walls have me curious. Can THIS be partly responsible for oil consumption? I also suspect the valve guides, since 2 years ago I had to replace 7 intake valves and one exhaust valve due to stem wear. I wrote on this subject before: The Bronze valve guides should have worn before the Stainless Steel valves, shouldn't they? I'm taking the block, heads, pistons and rods in tomorrow. I'll report back as soon as I know more.
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