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Thread: Help with cam for LS1 5.7 Swap in Tahoe

  1. #1
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    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.

  2. #2
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    No one has any ideas?

  3. #3
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    Change cams if you want! The stocker will do fine for all around driving and towing. Anything you do will be better than the old L31!
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  4. #4
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    Quote Originally Posted by GMCwantsLS1 View Post
    Change cams if you want! The stocker will do fine for all around driving and towing. Anything you do will be better than the old L31!
    Well thats good to hear, I was kinda worried about having less low end with the LS1 over the L31, since the L31 is rated like 330 ft.lbs at 2800rpm.

  5. #5
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    I think the LS1 is about 350 at 2800 rpm. 375 at 4400. 385 at 4800. Revs easy to 6200.
    Last edited by GMCwantsLS1; 05-07-2017 at 08:20 AM.
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  6. #6
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    Oh I didn't realize that. I think I'm going with the Texas Speed Stage 2 Low Lift 212/218, .550"/.550" 112 LSA. It made 426hp and 411tq on a 5.3L so I'd expect 450hp and probably 420tq on the 5.7

  7. #7
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    It seems better for a vehicle with more weight than a car to have more low in torque. If you have to rev the crap out of it to get it to move might not be the Best driving experience. Higher torque converter might help even with stock cam.

  8. #8
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    Quote Originally Posted by GMCwantsLS1 View Post
    It seems better for a vehicle with more weight than a car to have more low in torque. If you have to rev the crap out of it to get it to move might not be the Best driving experience. Higher torque converter might help even with stock cam.
    That cam I posted made more power everywhere over the stock cam in the 5.3L on the dyno. I couldn't see the numbers under 2000rpm though.

  9. #9
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    Like I said. Change the cam if you want. The stock one will work fine for a truck.

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