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Help with cam for LS1 5.7 Swap in Tahoe

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Old 05-02-2017, 10:38 AM
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Default Help with cam for LS1 5.7 Swap in Tahoe

Basically I have a 1996 Tahoe 2 door 4x4 and just found a huge crack in the L31 Vortec 350 so that engine is going bye. I just bought a 2001 Camaro SS and am pulling the LS1 5.7 to put in the tahoe. Considering this thing weighs about 4700 pounds I should get rid of the "car" camshaft. The tahoe does have 3.73 gears at least with 30.5" tires. I'm going to have 1 3/4" long tube headers, 2.5" exhaust, air intake, electric fans, STOCK STALL CONVERTER, either a TBSS intake manifold or LQ4 intake manifold, and 241 heads. I can upgrade the valve springs if needed. I do want something that is capable to tow if I need to, which would be pretty rare. It would be nice to find a cam that increases low end torque and some horsepower up top (which isn't as important) and gets around the same mileage as the stock cam. I would prefer to find a cam with .550"/.550" or less valve lift since I want something reliable, and emissions aren't as issue since I'm in Nevada, but it would be nice to not have a smelly cam. Max rpm for the engine would be 6000. Thanks for any help.

Last edited by Fast 95 Z28; 05-02-2017 at 10:48 AM.
Old 05-02-2017, 11:12 AM
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Look into the "truck cams" from Cam Motion, Brian Tooley, Tick Performance, Martin Smallwood, or others. Look for durations around 205/210 to 212/218 or so, lifts up to .550" so you can use LS6 springs. Keep the overlap to -10 or more for smooth running if that's what you want.
Old 05-02-2017, 11:28 AM
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Fwiw valve lift doesnt kill the reliability of the engine, cam or springs. You want torque with a smaller duration for a truck then you've gotta raise the lift.
We have 3 or 4 torque cams thatll work with a stock stall no problem.
Our budget cam kits run $515 for cam and beehive pac1218s which are good to .600 lift. You can reuse your stock prs.
For that setup id recommend a 219/223 with .590 lift on a 111+1 you wont have to pull it above 6k and itll have a nice little lope at idle.
Old 05-02-2017, 12:01 PM
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Originally Posted by tech@WS6store
Fwiw valve lift doesnt kill the reliability of the engine, cam or springs. You want torque with a smaller duration for a truck then you've gotta raise the lift.
We have 3 or 4 torque cams thatll work with a stock stall no problem.
Our budget cam kits run $515 for cam and beehive pac1218s which are good to .600 lift. You can reuse your stock prs.
For that setup id recommend a 219/223 with .590 lift on a 111+1 you wont have to pull it above 6k and itll have a nice little lope at idle.
Do you have any idea what kind of hp/tq that would make and I wouldn't have to flycut the stock flat top LS1 pistons for valve clearance?
Old 05-02-2017, 12:07 PM
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No flycutting at all. Your whole drivetrain would suck the power up, but at the crank with your planned upgrades youd see at least 60ftlbs over stock. The horsepower wouldn't be as high due to the 6k max rpm but still a very healthy gain and keep the low end torque.
Old 05-02-2017, 12:42 PM
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Originally Posted by tech@WS6store
No flycutting at all. Your whole drivetrain would suck the power up, but at the crank with your planned upgrades youd see at least 60ftlbs over stock. The horsepower wouldn't be as high due to the 6k max rpm but still a very healthy gain and keep the low end torque.
Yea its not very important, just curious if it would be like 400 crank hp or something. Like I mentioned keeping the idle-low end torque is most important, since I spend 95% of my driving in that rpm range.
Old 05-02-2017, 12:44 PM
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To give you an example the stock ls6 cam gives the ls1 400hp. It is considerably smaller than the torque cam above.
Old 05-08-2017, 10:44 AM
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Originally Posted by G Atsma
Look into the "truck cams" from Cam Motion, Brian Tooley, Tick Performance, Martin Smallwood, or others. Look for durations around 205/210 to 212/218 or so, lifts up to .550" so you can use LS6 springs. Keep the overlap to -10 or more for smooth running if that's what you want.
I think I'm going with this cam Texas Speed Stage 2 Low Lift 212/218, .550"/.550 112LSA. It made 426hp and 411tq on a 5.3L with headers. It made more power everywhere over the stock cam from 2000rpm up from what I see on the dyno. I would think it would make 450hp and about 420tq in the bigger 5.7L engine.
Old 05-08-2017, 11:51 AM
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It made 50hp and 25tq on a gen4 5.3 with an nnbs intake.
Nearly any cam will do at least that and custom ground will make more than that.
Esp with no accessories.

The higher lift cam they have would be a better choice between the two but still is pretty low in gains.
Old 05-08-2017, 11:52 AM
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Guess I'm late to this party. I'd do 214/224-112+4 for that truck 5.7.

Do not expect to see 450hp though.
Old 05-08-2017, 12:19 PM
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Originally Posted by tech@WS6store
It made 50hp and 25tq on a gen4 5.3 with an nnbs intake.
Nearly any cam will do at least that and custom ground will make more than that.
Esp with no accessories.

The higher lift cam they have would be a better choice between the two but still is pretty low in gains.
Isn't the TBSS intake manifold just as good as the NNBS intake? I was saying 450 flywheel horsepower, not to the wheels. I didn't realize they weren't using any accessories either.
Old 05-08-2017, 12:20 PM
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Originally Posted by Darth_V8r
Guess I'm late to this party. I'd do 214/224-112+4 for that truck 5.7.

Do not expect to see 450hp though.
Have any links on that cam or would that be a custom grind?
Old 05-08-2017, 12:22 PM
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100 guys... 100 opinions! Leave it to a real expert. Call Pat G and let him assist you.
Old 05-08-2017, 12:42 PM
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The tbss intake is the nnbs intake.
I believe the only dyno that uses all accy is the one GM uses due to keeping their SAE-J qualifications and certification.
I could be wrong though but most aftermarket use no accy.

Tusky, while we are not patg, we are professionals in this industry and experts as well, and do not charge to custom spec a cam either.
Old 05-08-2017, 12:51 PM
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Originally Posted by Fast 95 Z28
Have any links on that cam or would that be a custom grind?
It'd be a custom grind. One I came up with as a wet dream cam for my suburban. But honestly, it's best to call people who know like Martin Smallwood. I get a kick out of talking cam specs, etc, but even for my own ****, I call people smarter than myself.
Old 05-08-2017, 01:13 PM
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Originally Posted by tech@WS6store
The tbss intake is the nnbs intake.
I believe the only dyno that uses all accy is the one GM uses due to keeping their SAE-J qualifications and certification.
I could be wrong though but most aftermarket use no accy.

Tusky, while we are not patg, we are professionals in this industry and experts as well, and do not charge to custom spec a cam either.
Where is the link for the custom grinds on your store?
Old 05-08-2017, 01:17 PM
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http://www.ws6project.com/user_stor/catalog/index.php?cPath=235_426_73_765

Take your pick!
Or you can email me direct at Rpmspeedtech@gmail.com

Since ill have to ask you all the questions anyway from that link you can go directly to me first.



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