Custom BLower cam from Richard@WCCH
#14
Notorious BIG
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the patriot dual springs are quieter than the single 918 springs? unless you guys are saying it is really a big deal, i'll just stick with the 918's since i already ordered them through summit and they are already on there way.
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Notorious BIG
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I also forgot to mention, this cam MUST be wife friendly. Meaning i need it to not stall at red lights and such. I know alot of it is in the tuning, but if the cam is too hard for me to tune and the truck won't run good enough for the wifey to drive, it will come out and get sent back. period.
#18
I AM A MOTHERF*CKER
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Hey man,
With the maggie you want a heavy exhaust bias and as close to 0* overlap as you can get. The good news is that 0* overlap and driveability amount to the same thing -- healthy lsa.
The 122H is a healthy compressor, so I'd personally go a bit larger with the exhaust bias than I might with the 112. I'm thinking 12* bias. With the 6.0 stock heads, I'd want 216-220 on the intake with that blower, so...
I'd look at something in between:
216/228 .570/.585 on a 113 lsa
220/232 .570/.585 on a 114 lsa
With that blower, you can probably trade some low end torque for peak power in the cam. The bigger one will be a bit tougher to get to idle, but it won't be too bad like a big overlap cam would be, and once tweaked, won't cause any driveability problems at all. You'll know it's there and a gearhead might hear it, but few others will.
I think those are pretty close to what Grip ended up with (the bigger one at least) but don't recall for sure. Richard can help you out with the lift numbers based on your exact head setup -- I think those are about the max lift you want on stock 317s but its been a while on that
Hope it helps!
With the maggie you want a heavy exhaust bias and as close to 0* overlap as you can get. The good news is that 0* overlap and driveability amount to the same thing -- healthy lsa.
The 122H is a healthy compressor, so I'd personally go a bit larger with the exhaust bias than I might with the 112. I'm thinking 12* bias. With the 6.0 stock heads, I'd want 216-220 on the intake with that blower, so...
I'd look at something in between:
216/228 .570/.585 on a 113 lsa
220/232 .570/.585 on a 114 lsa
With that blower, you can probably trade some low end torque for peak power in the cam. The bigger one will be a bit tougher to get to idle, but it won't be too bad like a big overlap cam would be, and once tweaked, won't cause any driveability problems at all. You'll know it's there and a gearhead might hear it, but few others will.
I think those are pretty close to what Grip ended up with (the bigger one at least) but don't recall for sure. Richard can help you out with the lift numbers based on your exact head setup -- I think those are about the max lift you want on stock 317s but its been a while on that
Hope it helps!
#19
FormerVendor
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Looks like I'm a little late to this thread, but here goes anyways.
This might seem a bit boring, but IMO the ideal cam for this truck is a 218º/224º .563"/.568" on a 114ºlsa. The Comp lobe numbers are 3712-intake and 3715-exhaust. The reason for these lobes and not the larger XER or XFI lobes are because the heads are unported stock heads. Big lift and rapid valve motion is not going to help much and I want to keep the idle and low speed cruising in check. A longer exhaust lobe will cause the low speed tractibility to suffer and I value a nice idle and now speed manners higher than a peak hp number. Also, the converter is a 2600 and is going to be ideal with the 122. This combination is going to have ferocious midrange and still have great driveability.
Give me the thumbs up or down Holty and I'll get a cam in the works.
Richard
This might seem a bit boring, but IMO the ideal cam for this truck is a 218º/224º .563"/.568" on a 114ºlsa. The Comp lobe numbers are 3712-intake and 3715-exhaust. The reason for these lobes and not the larger XER or XFI lobes are because the heads are unported stock heads. Big lift and rapid valve motion is not going to help much and I want to keep the idle and low speed cruising in check. A longer exhaust lobe will cause the low speed tractibility to suffer and I value a nice idle and now speed manners higher than a peak hp number. Also, the converter is a 2600 and is going to be ideal with the 122. This combination is going to have ferocious midrange and still have great driveability.
Give me the thumbs up or down Holty and I'll get a cam in the works.
Richard