2004 6.1 hemi camshaft on 2007 5.7 hemi
#11
10-05-2011, 08:58 PM
Dunno where you would get a 2003 or 2004 6.1 cam? the 6.1L HEMI's weren't introduced until 2005. Regardless of the year, 6.1 cams are not a popular choice for rams especially QC's.
The 6.1 does gain you some top end power, but sacrifices a good bit of the low end torque which is what you need when your trying to move a 5500 lb truck. Lots of the 6.1 cams are used for regrinds to something with more torque like a crazy spartan, crazy Jay, comp 210, 210X, or FRI sidewinder.
nateroach
The 6.1 does gain you some top end power, but sacrifices a good bit of the low end torque which is what you need when your trying to move a 5500 lb truck. Lots of the 6.1 cams are used for regrinds to something with more torque like a crazy spartan, crazy Jay, comp 210, 210X, or FRI sidewinder.
nateroach
What are the specs of the stock 6.1 cam?
Last edited by IndyRamMan; 10-05-2011 at 09:00 PM.
#13
10-05-2011, 09:56 PM
no chance they re grind them into any of the aforementioned cams then
Last edited by IndyRamMan; 10-05-2011 at 09:59 PM.
#14
10-05-2011, 10:29 PM
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#15
10-05-2011, 10:32 PM
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#16
10-06-2011, 09:11 AM
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#17
10-08-2011, 08:36 AM
you can not add more profile to a lobe, nor can you change the intake or exhaust centerlines. You can only regrind to less of a cam than you have, never more. all of those cams listed have either more lift, or different intake/exhaust centerlines. you give them your cam only as a waver for a core charge, those cams are all new. regrinds stopped back in the day of mechanical tappets. its a thing of the past.
Last edited by IndyRamMan; 10-08-2011 at 08:38 AM.
#18
10-08-2011, 06:00 PM
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you can not add more profile to a lobe, nor can you change the intake or exhaust centerlines. You can only regrind to less of a cam than you have, never more. all of those cams listed have either more lift, or different intake/exhaust centerlines. you give them your cam only as a waver for a core charge, those cams are all new. regrinds stopped back in the day of mechanical tappets. its a thing of the past.
For example, here is Rubberfrog's 6.1 Re-Grind specs
6.1 reground by Inertia Motorsports
Duration: Intake 212* Exhaust 212*
Lift: Intake .536 Exhaust .536
Lsa: 115
Alsmost all of the performance cams (minus the 5.7 mopar cams) are regrinds of the 6.1 cam or cam core. The larger of the cams cannot be reground from the 6.1 cam, they use the 6.1 cores.
#19
10-09-2011, 11:38 AM
Are you just stupid or ignorant to what they do with the 6.1 cams. They do and they have done regrinds to similar specs to a crazy jay, crazy spartan, Spartan, 260 and FRI. Its been done. I am not saying that they are identical but they are pretty damn close minus the tighter LSA.
For example, here is Rubberfrog's 6.1 Re-Grind specs
6.1 reground by Inertia Motorsports
Duration: Intake 212* Exhaust 212*
Lift: Intake .536 Exhaust .536
Lsa: 115
Alsmost all of the performance cams (minus the 5.7 mopar cams) are regrinds of the 6.1 cam or cam core. The larger of the cams cannot be reground from the 6.1 cam, they use the 6.1 cores.
For example, here is Rubberfrog's 6.1 Re-Grind specs
6.1 reground by Inertia Motorsports
Duration: Intake 212* Exhaust 212*
Lift: Intake .536 Exhaust .536
Lsa: 115
Alsmost all of the performance cams (minus the 5.7 mopar cams) are regrinds of the 6.1 cam or cam core. The larger of the cams cannot be reground from the 6.1 cam, they use the 6.1 cores.
thanks for the name calling. but you're dead wrong. you can not under any circumstances move a lobe on a cam. they are not adjustable. its a solid piece of steel that is cut to a shape. you must have no concept of how a cam actually works for you to believe they use a 117* cam core for a 115* cam. this can not be changed.
enjoy the ignore list.
#20
10-09-2011, 12:22 PM
NOW THAT WAS A LITTLE UNCALLED FOR, TRUCKIN... We can disagree without name calling here!
Now as far as re-grinding a cam goes, yes you can change not only duration but LSA as well. It's commonly done by grinding down the non-lobe part of the cam, increasing the distance between the low points and the high points.
This DOES however create some issues that must be overcome. First, they cannot grind past the outer, hardened layer or they've destroyed the cam so you cannot make extreme changes. Secondly, this results in a slightly smaller cam and the slack this creates has to be accounted for somewhere else.
This is usually accomplished by using adjustable rockers or adjustable pushrods or in cases, both.
As far as welding material onto a Camshaft, I've heard of it done, but I've never seen it.
I hate to disagree with you RamMan, but I have seen a pile of 112* LSA cams re-ground to 108* a few years ago during a tour of a facility that offers the service...
Now as far as re-grinding a cam goes, yes you can change not only duration but LSA as well. It's commonly done by grinding down the non-lobe part of the cam, increasing the distance between the low points and the high points.
This DOES however create some issues that must be overcome. First, they cannot grind past the outer, hardened layer or they've destroyed the cam so you cannot make extreme changes. Secondly, this results in a slightly smaller cam and the slack this creates has to be accounted for somewhere else.
This is usually accomplished by using adjustable rockers or adjustable pushrods or in cases, both.
As far as welding material onto a Camshaft, I've heard of it done, but I've never seen it.
I hate to disagree with you RamMan, but I have seen a pile of 112* LSA cams re-ground to 108* a few years ago during a tour of a facility that offers the service...