Jump to content

5.3 l83 6.2 L86 Cam Swap

Brooks Blake

By Brooks Blake
in Engines & Drivetrain

 Share

Recommended Posts

Brooks Blake New Member

Brooks Blake

Posted
Posted

Has anyone ever replaced the stock l83 cam with a stock l86 cam?  If so were there any gains from it.  I am looking to get some extra torque out of my truck i know i can do the afm delete and put a stage 1 in there which i am also considering but i am trying to weigh out my options as far as cost in parts and time it will take to do the job.  Any helpful feedback will be much appreciated.

lucas287 Enthusiast

lucas287

Posted
Posted

Start with this YT channel: https://www.youtube.com/user/pmoore4321/videos

 

He did quite a bit to his L83 before going boosted. L86 Cam, intake, LT headers, etc.. 

 

If you want extra torque is doesn't get any more simple than converting to E85! I have the L86 with a bunch of torque already but I notice a huge difference when I run E85. 

lucas287 Enthusiast

lucas287

Posted
Posted
2 hours ago, Inacanyon said:

You want the lt5 cam so you can dump the afm lifters

Good call. Looks like the specs are identical except it's non-AFM. 

flyingfool Senior Enthusiast

flyingfool

Posted
Posted (edited)

if you like getting 30mpg, I would keep the AFM and rock the 6.2 cam, with full 6.2 induction, can,t cost more than $100 from GM, or get a used ebay cam for $20.. should make another 15-20 hp

 

its more work than its worth IMO,, ide keep stock cam, delete AFM and run a low boost turbo kit.

Edited by flyingfool
lucas287 Enthusiast

lucas287

Posted
Posted
11 hours ago, flyingfool said:

if you like getting 30mpg, I would keep the AFM and rock the 6.2 cam, with full 6.2 induction, can,t cost more than $100 from GM, or get a used ebay cam for $20.. should make another 15-20 hp

 

its more work than its worth IMO,, ide keep stock cam, delete AFM and run a low boost turbo kit.

Mmm love me a quick spoolin' lil' turbo! Yep, you convinced me lol

  • 2 weeks later...
Brooks Blake New Member

Brooks Blake

Posted
  • Author
Posted

Thanks for the info I am currently running e85 and it’s tuned. I have headers and a cai just ordered l86 intake and tb have also considered doing a boost setup. Taking it one upgrade at a time. 

lucas287 Enthusiast

lucas287

Posted
Posted (edited)
17 hours ago, Brooks Blake said:

Thanks for the info I am currently running e85 and it’s tuned. I have headers and a cai just ordered l86 intake and tb have also considered doing a boost setup. Taking it one upgrade at a time. 

That's the way to do it. My dad told me from my first vehicle that the goal is to get your ride "sweet street". Rides good, looks good, hauls ass, but still is reasonably quiet and get's decent fuel mileage. Baby cammed my first truck along with full bolt ons = perfect. My Mustang = WAY overboard. Spent too much and it still wasn't as fast as Cobra and wasn't very daily driveable. I've spent a lot and learned a lot lol 

Edited by lucas287
Brooks Blake New Member

Brooks Blake

Posted
  • Author
Posted
2 hours ago, lucas287 said:

That's the way to do it. My dad told me from my first vehicle that the goal is to get your ride "sweet street". Rides good, looks good, hauls ass, but still is reasonably quiet and get's decent fuel mileage. Baby cammed my first truck along with full bolt ons = perfect. My Mustang = WAY overboard. Spent too much and it still wasn't as fast as Cobra and wasn't very daily driveable. I've spent a lot and learned a lot lol 

Yeah I don’t want to go too far at all because it has to be reliable as well. But it’s been fun at least learning and researching so far. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      So, do I go elbow-deep on this thing or list it for sale and play dumb? Seems to "runs good."   I'm about $1200 away from having: -a rebuilt injector ($300) -a new cat ($250) -a new cat back exhaust (OE style) ($300) -a new AC compressor ($200) -AC refrigerant charge ($150)   In theory, this should rectify the obvious detracting issues from its value and operability. Cold AC with a non-squeaking AC pulley both sounds and feels good. An exhaust that isn't cut/hacked in 17 different places and doesn't vibrate on a crossmember would make it sound and feel less janky. A working cat would help the stink, and will save the earth, but *if and only if* the fuel system is working properly, which would also address the intermittent "rich" CEL.   Heard a good one... CEL for "Rich condition" means you haven't spent enough money on the truck lately, and it's letting you know.   Rebuilding the injector would seem to be the most important part. Replacing the cat would be secondary. I don't think mine is plugged or overly restricted, but it might be a little restricted? I have no good way to tell other than seat of the pants feel. I hate the smell.   The current theory is I have a rich idle problem: A bad fuel pressure regulator, or a leaking injector(s) being the highest probabilities. I already replaced the FPR but that doesn't mean its replacement isn't also bad. It was a new part from Dorman, but the packaging looked like it had been sitting on a shelf for 20 years.   This is the (single) upstream O2 sensor shown at idle. I'm getting a lot of "rich" it seems. Sometimes it stays high like that and doesn't drop down. That makes me think it's processing injector leaks or a partially stuck open injector.     Other times it looks like this. Nice oscillations between rich and lean, which is what I think it should be. Under load and at speed, the oscillations are nice and tight and uniform looking, high and low.     Fuel trims suggest the PCM is compensating pretty hard at idle to pull fuel out. But it's not enough to trip a CEL. Something about slowing to a stop: brake vaccum booster, EGR, or the EVAP purge is delayed, or there's pooled fuel in the intake again that's draining into a cylinder is enough to set the CEL. Of course, in two days of driving, it hasn't set. I was hoping to actually look at the freeze-frame data when it sets. IAT is high because it's idling on an 83 degree day here.  
    • Another JR
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By Another JR · Posted

      Have considered installing a DC to DC charger in your camper to replace your isolator?  
    • newdude
      Gas fill door

      By newdude · Posted

      Common failure.  You need to replace the fuel door housing.   The painted cover transfers over to the new housing.  To remove the old one there is 4 spots where you poke the plastic to release it.  
    • newdude
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By newdude · Posted

      No such thing as regenerative braking on a pure ICE vehicle.     Regenerative braking is the re-capture of energy from electric motors and stores it in the battery pack.  So hybrids, PHEV and EVs have regenerative braking.     What you are seeing is the charging system changing modes is all.  Its likely entering charge mode for some sort of reason is all.  All of the charging modes will be listed below.   As for L10 vs D.  L10 turns off automatic grade braking.  L10 puts you in control of grade downshifts where in D it will automatically do it based on brake pedal position and other factors.  Otherwise L10 and D drive exactly the same aside from that one aspect.    Battery Sulfation Mode The BCM will enter this mode when the interpreted Generator output voltage is less than 13.2 V for 45 minutes. When this condition exists the BCM will enter Charge Mode for 2–3 minutes. The BCM will then determine which mode to enter depending on voltage requirements.   Charge Mode The BCM will enter Charge Mode when ever one of the following conditions are met:   Windshield wipers are ON for more than 3 s. Climate Control Voltage Boost Mode Request is true, as sensed by the HVAC control module via serial data. High speed cooling fan, rear defogger, and HVAC high speed blower operation can cause the BCM to enter the Charge Mode. The estimated battery temperature is less than 0°C (32°F). Battery State of Charge is less than 80%. Vehicle speed is greater than 145 km/h (90 mph) A current sensor malfunction exists. System voltage is determined to be below 12.56 V When any one of these conditions is met, the system will set targeted generator output voltage to a charging voltage between 13.9–15.5 V, depending on the battery state of charge and estimated battery temperature.   Fuel Economy Mode The BCM will enter Fuel Economy Mode when the estimated battery temperature is at least 0°C (32°F) but less than or equal to 80°C (176°F), the calculated battery current is less than 15 A and greater than −8 A, and the battery state-of-charge is greater than or equal to 80%. Its targeted generator output voltage is the open circuit voltage of the battery and can be between 12.5–13.1 V. When fuel economy mode is active, the generator is not charging, only maintaining open circuit battery voltage. The BCM will exit this mode and enter Charge Mode when any of the conditions described above are present.   Headlamp Mode The BCM will enter Headlamp Mode when ever the head lamps are ON (high or low beams). Voltage will be regulated between 13.9–14.5 V.   Start Up Mode When the engine is started the BCM sets a targeted generator output voltage of 14.5 V for 30 s.   Tow/Haul Mode (if applicable) Pressing the Tow/Haul Mode button located on the center stack, the vehicle system voltage is raised and the remote (non-vehicle) battery will be charged. Having the headlamps on will raise the system voltage and if the Tow/Haul button is applied it will not serve any purpose. The voltage is regulated between 13.9-14.5 V.      
    • jaszr2
      Active Grille Delete

      By jaszr2 · Posted

      Hello from Australia Just sharing that there is now a way to delete the active shutters entirely with just a plug in module. Opens up tons of room to light bars etc.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...