Jump to content

Kenne Bell or Whipple on 8.1?


Recommended Posts

Posted

Kenne Bell only will program if you have the 4L80e or 4L85e...no programming for the Allison. I've been running the Whipple for a while now with not one problem..very straight forward install and a very good kick in the pants too.

Posted

8100HD,

 

I dont want to start a big supercharger discussion here in the wrong thread, but can you give me a thumbnail on the supercharger install and upkeep? I am REALLY flirting with the idea of adding a supercharger to my 8.1L. What is the basic install like? Did you do yours yourself? I just sort of cringe at the idea of making all the changes needed to add the supercharger. Injectors, wiring mods, new PCM flash (already have the Westers), adding the oil lube line/tapping the oil pan, and whatever else. Is there any upkeep other than the basic 3 month/3000 miles routine? Is the power increase enough justification for the expense? Any other info you may have, or things you would have done different?

Posted

Okay if I miss something, just ask again..After many searches and read threads on many boards I decide to go the Whipple route last year. Arrived at my door without a problem, unpacked it and took an inventory of parts. figured out when I was going to make time for the install and sat down with the install instructions and a cool six pack..I would re-read them off and on for the next couple of days...when the install day came I awoke early to get the truck and head to my shop, I started wrenching at about 9 am following the instructions to a T. Everything went as planned. The splicing into factory wiring was a cake walk, being MECP certified and playing with vehicle wiring for about 14 years now. The instructions from Whipple are very complete and very understandable(if thats even a word) Well I got to the point where I was going to turn the key at about 10pm that night...talk about nervous, she fired without a problem and has been running flawlessly ever since. Since the Whipple compressor is a sealed unit it has its own internal oil that I change at about 5k originally, but plan on stretching the interval a bit more...no tapping the pan and risking a metal chip in the pan. I am running the Whipple kit as it came in the box, which I reccomend to everyone except the guy who needs every single HP out of his motor...my feeling is that when you start messing with their package and changing injectors and tunes you start having some problems, but when set-up as designed by them it runs problem free. I have the 2 additional injectors and the Whipple FMU, put it on a wide band and my A/F ratio is right where it should be. The power increase is like no other mod you can do..it is a complete rush..along with the charger I also have TOG headers, Flowmaster cat-back, DirectHits ignition, modded mafs, and a factory airbox with Whipple mods. I can roast..I mean ROAST my 35's...even at 20mph and punch it she lights 'em up. I still run factory 3.73 gears and tow 8k at times...what a difference :withstupid: As far as numbers go, put it on a dyno this past summer, about 85-90* out with some good old Northeast humidity and rolled a 360/452 with my 35's on....thats hanging right up with a Hot Juiced Dmax...plus I got the cool factor...there is no mistaking my truck coming down the road...nothing sounds close to a Blown 8.1 whining away...let me know if you have anymore questions.

8.1 :chill:

Posted

I've been pondering a Whipple for some time but the new direction I've gone its not a big enough compressor. Never the less a good right up there 8100HD

  • 3 years later...
Posted

I don't see the 8.1 package offered anymore on the Whipple website...

Posted

Yeah, I guess i waited too long to pull the trigger. Although, I still can't afford it.....

Archived

This topic is now archived and is closed to further replies.

  • Latest Articles

  • Posts

    • Looking for advice from this group. Took my flawless 2020 6.2 TB to an unnamed shop for routine rear brakes and oil change. Tech forgot to put oil back in after the full service and needles to say, destroyed my engine.  It’s all on their shop video so they are responsible.   I had my Chevy dealer do the analysis and they confirmed its compromised and said engine replacement. The manager said they only get GM reman engines from GM with full 3 yr warranty and the one they would put in is not same as what’s they are swapping out on 21-25 for recall.    I am looking for advice why that would be a different engine because obviously I had the good 6.2 year and replacing it has my concerns with that recall for 21-15   Also what’s the pros and cons of accepting the engine swap vs telling the shop that bricked the truck to pay up so I buy a new truck. I’m concerned about stigma resale eventually if I just decide to get rid of it after the swap or other issues showing up after the swap out.  
    • Just looked up my records.  I've never gone over 5000 miles between oil changes.  At 46K miles, I have 10 oil changes.  I hope that will help.  I also installed the disabler last year.  I've still had a few times when it didn't seem to engage (which I can tell because the start stop feature kicks in), but for the most part, I think it's working.  For some reason, GM did not include the number of cylinders running in the information screen like I had on other models.  In my Cadillac, it shows me when it's running on 4 cylinders on the fuel milage screen.  I can't find that on my '21 Denali.
    • you might read through the info on gmupfitter.com for your truck, to find a good power source.
    • Melling I believe is/was the OEM on the lifters who explored this problem some years ago. The white paper they generated on the topic indicated two items of note when I read it. 1.) They only fail on the switch. Prevent the switch, prevent the failure. 2.) The majority fail due to deposits messing up the timing of that switch. Anyway that's what I got from it.    Mine have always been active, 195K+ now, and my oil maintenance is surgically clean.    Of course this assumes good parts. That is no heat treat issue or machining flaws. I get comfortable that these issues are in the rearview mirror by about 30K. IMHO naturally. 
    • Yes, the key seems to be with the half tons that if it has the Z71, then it definitely has the two speed. What got me was that the two speed AND the lower geared towing package option could not be chosen together the last few years unless it was mated up to the 6.2. Want the 3.0 duramax and 3.73 tow gears ... nope, can't get the two speed transfer case ( neighbor son realized that after he had bought his used 3.0 half ton .. where the frick is the low range ? ! ).    I am still unsure which truck series, the half ton or the HD truck that the original poster is referring to for sure other than yes his question is in the HD section of this forum but that doesn't guarantee the question got asked in the right section.  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...