High torque 6.0 build cam
Idk if those earlier year cummins really even out performs a 6.0 gasser.
I have a dmax with a blown h/g. I bought it that way with intentions on fixing it. Really driving it around a little now and then to keep **** working and the battery charged you wouldn't even know it. But it pressurizes the rad.
I have a dmax with a blown h/g. I bought it that way with intentions on fixing it. Really driving it around a little now and then to keep **** working and the battery charged you wouldn't even know it. But it pressurizes the rad.
On The Tree
Joined: Dec 2018
Posts: 105
Likes: 12
From: Iowa
Look into summit truck cams. They produce lots of low end grunt for a great price. I’ve got experience with a few of them and they have done a great job with them. They all will require tuning though. Also a good upgrade for torque would be to ditch the 317 heads and find some 862s or 706 5.3 heads. Increasing the compression ratio is a huge step forward in increasing low speed torque production. A set of 799s would also be great but people seem to value these higher. You can buy 862s all day long in great shape for 100 bucks.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
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From: Central Cal.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
A bit more civilized than the GM Hot Cam. I agree, would be a good runner with good manners.
You want more torque to 4 things with the cam
1. Keep duration mild on both intake and exhaust
2. Keep a fairly advanced icl like 107 to 109
3. Keep lsa narrow
4. Add lift
This is exactly why a cam like the stage 3 high lift from tsp is the best at what youd want to do. Itll still have negarive overlap but a noticeable idle and make some great bottom end and mid range. I have a dyno graph comparo i post all the time showing the difference in lift and duration of 4 cams the higher lift adds power and torque through literally the whole rpm plus adds a couple hundred rpm on the top end.
There are obviously other things to do with the engine, but as far as trying to match that idea up with any ls6 car cam, they are terrible at all of that. Super wide lazy lsa and weak lift.
1. Keep duration mild on both intake and exhaust
2. Keep a fairly advanced icl like 107 to 109
3. Keep lsa narrow
4. Add lift
This is exactly why a cam like the stage 3 high lift from tsp is the best at what youd want to do. Itll still have negarive overlap but a noticeable idle and make some great bottom end and mid range. I have a dyno graph comparo i post all the time showing the difference in lift and duration of 4 cams the higher lift adds power and torque through literally the whole rpm plus adds a couple hundred rpm on the top end.
There are obviously other things to do with the engine, but as far as trying to match that idea up with any ls6 car cam, they are terrible at all of that. Super wide lazy lsa and weak lift.
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Thread Starter
On The Tree
Joined: Sep 2011
Posts: 179
Likes: 0
From: fredericksburg va
I recently finished up a 6 liter for my brother. He tows a lot. 99’ Silverado ext cab 4x4, so a heavy rig. Went with a 219/230 .607” .603” on a 114. Tony helped me with the spec and had it cut by Comp. Runs very strong everywhere and pulls great. 10.56:1 compression and GMPP LS3 heads with LY6 intake. .030” over and offset dowels on the heads. Combination is everything. Very happy with this setup for the application.
TECH Addict
Joined: Sep 2010
Posts: 2,898
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I recently finished up a 6 liter for my brother. He tows a lot. 99’ Silverado ext cab 4x4, so a heavy rig. Went with a 219/230 .607” .603” on a 114. Tony helped me with the spec and had it cut by Comp. Runs very strong everywhere and pulls great. 10.56:1 compression and GMPP LS3 heads with LY6 intake. .030” over and offset dowels on the heads. Combination is everything. Very happy with this setup for the application.
It just reminded me I need to speak to my engine builder about this.
Do you know if this offsetting will cause any clearance issues with the heads or intake manifold?
It won't affect sealing?
The offset dowels have not affected any manifold alignment on any square port engine I’ve ever used them on, but I always mock up my stuff before assembly and check everything. No sealing issues for me.
TECH Addict
Joined: Sep 2010
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So when you offset the dowels does it change your bore size?
TECH Senior Member
Joined: Feb 2009
Posts: 5,445
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figure you static compression .then start plugging camshaft timing event to get your dynamic compression .the lower lift cams are nice to valve springs and the geometry is easier to attain.the higher lift cams help with more better air flow ,more dynamic compression ,at the cost of better springs .