Summit ls turbo cams?
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From: Norn Iron
The only true test....is testing. Which is why cam naming is bullshit, and all this "custom cam" nonsense is also bullshit. Without back to back testing....nobody can tell you what cam is best for any given combo.
Although keeping it simple...you'd need to be retarded to actually pick a very bad cam on an LS combo.
Except it wasn't proven. They ran different setups NA and added boost. They didn't keep the setup identical and only swap cams. And the video you posted exactly shows that they didn't perform the same.
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Megawankpot lol. I think the Pro LS movement made creating cam names a sport and we love the legendary ones and have them all in a spreadsheet. Our "Stage" convention is a little dry, but it's helpful for people to pick things out and know what they're getting due to the incremental growth in valve events from stage 1 - 4. Mavn's Ghost cam was too good to pass up so we added that. The latest is our SUM-8721 Saturn Stage 5...We couldn't help ourselves there either...Too much 'Merica in that 247/255 cam to leave it simply "Stage 5".
Megawankpot lol. I think the Pro LS movement made creating cam names a sport and we love the legendary ones and have them all in a spreadsheet. Our "Stage" convention is a little dry, but it's helpful for people to pick things out and know what they're getting due to the incremental growth in valve events from stage 1 - 4. Mavn's Ghost cam was too good to pass up so we added that. The latest is our SUM-8721 Saturn Stage 5...We couldn't help ourselves there either...Too much 'Merica in that 247/255 cam to leave it simply "Stage 5".
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On The Tree
Joined: Mar 2007
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From: Calgary, AB
Summit Ghost Cam installed in a 5.3 here. Made 340rwhp@5700 thru a 4L80e at 3000ft altitude. Naturally aspirated for now. Drives great, very smooth, very peppy, Little bit of a lope.
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
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Summit Ghost Cam installed in a 5.3 here. Made 340rwhp@5700 thru a 4L80e at 3000ft altitude. Naturally aspirated for now. Drives great, very smooth, very peppy, Little bit of a lope.
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
Summit Ghost Cam installed in a 5.3 here. Made 340rwhp@5700 thru a 4L80e at 3000ft altitude. Naturally aspirated for now. Drives great, very smooth, very peppy, Little bit of a lope.
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
My Tuner says stock 2wd Chevy 5.3 trucks on his dyno usually make 240-250rwhp, so this cam picked up nearly 100hp...
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The Ghost cam would be excellent in an LS3. Its design is related to our own Stage 3 SUM-8710 and Stage 4 SUM-8711 “LS3” specific cams. The main difference in those cams is different intake lobe profiles. This is to gain more piston to valve clearance with the big 2.165" intake valve.
The Ghost cam’s smaller intake duration allows the heads to be milled .030" for increased compression and torque. The negative overlap offsets the LS3’s increased chance of reversion. With all Pro LS cams, we aren’t big on late exhaust closing. This helps prevent reversion at part throttle which is where most engines often live.
An LS3 with the Ghost cam will be plenty enjoyable!
On The Tree
Joined: Mar 2007
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From: Calgary, AB
Need some advise on a cam for a twin turbo ls1, 317 heads, precision 6262s. I think Ill give one of these Summit cams a shot.
Forged iron block, 900-1000hp. I just saw that stage 4 is a max effort build cam. Id like some lope, not sure if I fall into the max effort category lol.
Forged iron block, 900-1000hp. I just saw that stage 4 is a max effort build cam. Id like some lope, not sure if I fall into the max effort category lol.
Last edited by ascastil; Jul 10, 2020 at 12:31 AM.
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I have the stage 3, its lopey. Enough to shake the truck at idle if that's what you're going for. The stage 2 will make 1000hp. Hell, the stage 1 ghost cam will probably make 1000hp. So your HP goal isn't really what will determine the cam needed.
Is this a street car? Drag track car? Mix of both? The stage 3 and 4 will require a high stall converter, the stage 4 probably needs about a 3800 stall, I ordered a 3400 for mine and it ended up stalling at 3100 and it does pretty good with the stage 3.
My buddy did the stage 2, it doesnt have nearly the idle lope the 3 does but it seems to pull about the same and he has a stock converter. It all really depends on where in the RPM's you prefer the power at.
I would pick a 2 for you by default, in fact I kind of wish i did the stage 2 instead. I don't think the 3 makes any more power and it just pushed the power up to 5-6k range instead of 4500-5500.
Is this a street car? Drag track car? Mix of both? The stage 3 and 4 will require a high stall converter, the stage 4 probably needs about a 3800 stall, I ordered a 3400 for mine and it ended up stalling at 3100 and it does pretty good with the stage 3.
My buddy did the stage 2, it doesnt have nearly the idle lope the 3 does but it seems to pull about the same and he has a stock converter. It all really depends on where in the RPM's you prefer the power at.
I would pick a 2 for you by default, in fact I kind of wish i did the stage 2 instead. I don't think the 3 makes any more power and it just pushed the power up to 5-6k range instead of 4500-5500.
I have the stage 3, its lopey. Enough to shake the truck at idle if that's what you're going for. The stage 2 will make 1000hp. Hell, the stage 1 ghost cam will probably make 1000hp. So your HP goal isn't really what will determine the cam needed.
Is this a street car? Drag track car? Mix of both? The stage 3 and 4 will require a high stall converter, the stage 4 probably needs about a 3800 stall, I ordered a 3400 for mine and it ended up stalling at 3100 and it does pretty good with the stage 3.
My buddy did the stage 2, it doesnt have nearly the idle lope the 3 does but it seems to pull about the same and he has a stock converter. It all really depends on where in the RPM's you prefer the power at.
I would pick a 2 for you by default, in fact I kind of wish i did the stage 2 instead. I don't think the 3 makes any more power and it just pushed the power up to 5-6k range instead of 4500-5500.
Is this a street car? Drag track car? Mix of both? The stage 3 and 4 will require a high stall converter, the stage 4 probably needs about a 3800 stall, I ordered a 3400 for mine and it ended up stalling at 3100 and it does pretty good with the stage 3.
My buddy did the stage 2, it doesnt have nearly the idle lope the 3 does but it seems to pull about the same and he has a stock converter. It all really depends on where in the RPM's you prefer the power at.
I would pick a 2 for you by default, in fact I kind of wish i did the stage 2 instead. I don't think the 3 makes any more power and it just pushed the power up to 5-6k range instead of 4500-5500.
Mostly street some track. Car is a 6 speed C5 with the Huron twin turbo kit with 6262s. I would like some lope but not a deal breaker. I really dont know what to pick. Probably not stg4, that says max effort single turbo. Stage 2 says high lift version of stg 4. So im guessing itll be a stg 2 or 3. I just want to pick the right one and Summit is too busy to talk, text, or FB message me lol.
from the Dyno I’ve seen, it was only a few hp difference between the stage 1, 2, and 3. Basically what it boils down to is sound and drive ability. Especially with a turbo car. So what if you gotta run 1/2 psi of boost to make up the difference between the stage 1 and 2 or 3. If you want it rowdy, get the stage 3. If you want a decent lope but note too rowdy, get the stage 2. If you don’t care if it has much lope, get the stage 1.
do note, as you go up in cam, you’ll need to go up in stall. I have a stage 1, it has very little lope in my 5.3, and drives like stock. However, it loped more in my 5.7 because I had probably at least a point more compression. The 5.3 is like 9.4 to 1 and the 5.7 was like 10.5:1.
from the Dyno I’ve seen, it was only a few hp difference between the stage 1, 2, and 3. Basically what it boils down to is sound and drive ability. Especially with a turbo car. So what if you gotta run 1/2 psi of boost to make up the difference between the stage 1 and 2 or 3. If you want it rowdy, get the stage 3. If you want a decent lope but note too rowdy, get the stage 2. If you don’t care if it has much lope, get the stage 1.
do note, as you go up in cam, you’ll need to go up in stall. I have a stage 1, it has very little lope in my 5.3, and drives like stock. However, it loped more in my 5.7 because I had probably at least a point more compression. The 5.3 is like 9.4 to 1 and the 5.7 was like 10.5:1.
do note, as you go up in cam, you’ll need to go up in stall. I have a stage 1, it has very little lope in my 5.3, and drives like stock. However, it loped more in my 5.7 because I had probably at least a point more compression. The 5.3 is like 9.4 to 1 and the 5.7 was like 10.5:1.
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