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SierraHD17

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Everything posted by SierraHD17

  1. SierraHD17
    You do realize the 6.6 is an engineered fleet engine designed to be beaten at high rpm just like the L96 was. Oil consumption is an issue on an LSor LT with short sleeves and a 4" stroke... This is a shorter stroke (3.86") and being the rod is the same length as the existing LS and LT engines with a 3.622 stroke ( 5.3/6.0/6.2) it would not surprise me if they raised the deck height to accommodate the longer stroke crankshaft. Let's see... advantages? 25 cubes and will always have that over any 6.2... kind of like comparing a 5.3 to a 6.2 here lol. The 6.6 is a fleet engine. It's going in everything from HD trucks to 25000 lb GVWR box trucks and whatever else. It's going to be as expensive as an L96 is now... Why pay a premium for less engine? And then still get stuck with AFM to delete when you don't have too.
  2. SierraHD17
    Ok.. nothing you said makes any real sense and is actually just rubbish. The rods aren't longer...I mean if you knew anything about how this works you would realize the rods are actually going to be shorter as stroke increases unless the pin height raises or the deck.... look no further than the 4.8 and the 5.3 for rod length using the same piston. The rods are the exact same length as the mighty LT1.... Yes I know for a fact as I have a connecting rod from a 6.6 new in the box sitting right in front of me. 6.098" center to center just like the rest of them. Why do I have one rod? Wanted to see if to use the new crank in my LS3/L9H 6.2 block I would need pistons with an altered pin height or buy the rods... well looks like pistons for me. So whether they upped the deck height on the 6.6 or just moved piston pin height I won't know until I get a block. Funny you mention long rod... odd how all those 800+ wheel hp 4.8's survive under boost with a longer connecting rod bahahahahaha. Guys used to say this sort of stuff back when they thought the 5.7 LS1 was unbeatable.... my how things have changed.
  3. SierraHD17
    The guy is swapping for more power and will be tuning his truck in doing so. So who cares about the stock numbers lol. I mean are you suggesting it has to be left to an unknown bone stock tune wise for 87 octane gas like the HD truck too. Just tune the thing.... it will absolutely rape a 6.2 lol. Mod for mod it will eat a 6.2... Stock is tuned for 87 fuel so put some ignition timing in it and let it eat. 150 lbs is likely closer to 80 to 100 lbs just like the LS iron to aluminum... 100 lbs....whooptee f'ing do on a 6000 lb truck lol. 3200 lb car.. might care... double that? Nope lol. It's a 6.2 with a longer stroke and this isn't hard lol. I know I know... it has 10.8:1 compression... if you think 0.7:1 will offset 25 cubic inches of displacement gained you need to think again. Take the almighty L86 and stroke it... oh wait... GM did it for you and put it in the Heavy duty truck lineup lol. Or.. you know what? It's actually better to think the 6.2 is all that with a bag of chips so the price can stay nice and high and let this worthless fleet truck engine be cheap for the rest of us wanting to make power. As I already said.. the 6.6 is the new 6 liter replacement and will be coming to you in wrecking yards across the country in the next couple years for a couple hundred dollars.
  4. SierraHD17
    The starter will not engage once the engine is running. It has nothing to do with Onstar.
  5. SierraHD17
    I would still hold out for a 6.6... not to mention being the fleet truck engine it will not have that price mystique the 6.2 has as a lot of guys want way too much for the 6.2 and it's not worth it. 6.6 also doesn't have that retarded afm junk in it either as an added plus. Bonus is the 6.6 will be found in pick n pulls everywhere in around 8 to 10 years lol. I'm all about the junkyard LS stuff... my Nova is mild with over 600 wheel on a turbo LQ4 and the bottom end is an unknown mileage wonder mutt. If you do not know the 6.6 is a stroked 6.2 with the block cast in iron...
  6. SierraHD17
    It's about performance.. and buying a new crate engine at full retail is ridiculous... Some of you guys are nuts lol.
  7. SierraHD17
    Wait a little bit and get the 6.6 from the new HD trucks... to heck with the 6.2. No afm hardware to delete and more power potential. And yeah the 6.2 was paired to the 6L80e in 2014.
  8. SierraHD17
    My one truck started its life with a brief stint in Onterrible and came to me equipped with one of those rust preventer modules. The same truck also had been back to the dealer multiple times with electrical problems surrounding the crank position sensor and they never resolved it under warranty. First thing I did was unhook and toss that module in the garbage after the truck went into limp mode and threw a code for the crank position sensor shortly after I bought it. I knew something was up when I cleared the issue by just disconnecting the battery. No module and it's been fine for almost a year now lol. I just pull the taillights and the rocker plugs, flush, allow to dry and fluid film. Much better preventative method.
  9. SierraHD17
    Simple answer is no. You will never make a Gen 3 engine work in a Gen IV platform without doing so much to the engine it's not worth installing. Find another Gen IV ( 07 GMT900 through 09 to avoid the VVT your 08 doesn't have that came along in 2010). Done.
  10. SierraHD17
    Yup. I have a Deka AGM I bought back in 2008 for my SRT8 Charger and ended up being too tall so it never went in the car. It's been my winch battery for my trailers ever since and it doesn't get charged on the trailer... only off the charger in the shop. Still perfect... pulled my K5 on the trailer the other day with it lol. If I don't get 7 to 10 years from a battery it was junk.
  11. SierraHD17
    I agree that drl's are nice other than when you are retrofitting projector lights with incandescent lamps to hid or led lights lol. That said it would be nice if GM wasn't so lazy with programming and allowed headlights off up here while maintaining the drl's.
  12. SierraHD17
    They aren't bad to install at all really. I dropped a 255 lph walbro I had sitting around into my buddies 03 Sierras fuel bucket. That said it's nice to have it all new. The last one I bought was a Delphi for my 04 but i modified it a lot and it has 2 450 lph walbro's in it Haha.
  13. SierraHD17
    You have gotten many answers and struck them all down. What fuel pump brand do you want to buy? Delco or Delphi are the best OEM replacement brands that myself and anyone else here have good luck with... pick one. Walbro makes an excellent pump as a well but they are more geared toward the performance side of things...
  14. SierraHD17
    Yeah dunno what to tell you. Over 200000 miles and 15 years on my 05s original GM installed pump. Surprised it hasn't rusted out and started leaking yet but it's good lol. All I will use for stockish replacements is OEM.
  15. SierraHD17
    Rear defrost is virtually useless... I have mirrors and could not care less about the back window. Every truck I have had for the last 10 or 15 years has rear defrost and I never turn it on. I do like my slider and if the fix is a solid pane I am just killing the defrost and never getting the recall lol.
  16. SierraHD17
    I'm waiting to see them offer replacement solid back windows lol. Like the heated washer fluid delete they did years ago that will be the gm thing to do.
  17. SierraHD17
    Pretty decent numbers for stock. Be interesting to see what ecm gm used and whether or not there is ever tuning for it lol. I know I am going to get an L8T engine as soon as I can and then just run it on the existing e92 ecm obviously not in a 2020 HD truck.
  18. SierraHD17
    Meh. I have a 2013 max trailer 6.2 half ton... its leveled with 33" tires. For fun... it gets the same mileage as my 2017 3/4 ton does lol.. This particular 2017 got really good mileage stock. 17 to 18 mpg highway was no problem when it sat stock rude height, stock tires and its lovely 3.73 fleet order only gears in it. I have to say I drive a 4 cylinder Malibu when I feel like getting actual good gas mileage.... the fuel savings from parking the trucks buy the car and pay all its expenses plus profit.. In the next few months since I work amongst large fleets we will have a bunch of these 6.6 trucks running around being used for what they are designed for... fleet use. It won't surprise me when they get similar mileage to their outgoing 6 liter counterpart.
  19. SierraHD17
    Nope... that's called driving down the highway. If you knew anything about where I live you would realize quickly "perfect" conditions are a fantasy. This 17 is my 6th 6 liter truck and gets better mpg than my others... My old trucks with 4L80e's were worse... I don't even remember what my 09 got lol.
  20. SierraHD17
    Weird. I easily get the 14-15 mpg average with my 2017 6 liter 3/4 ton. That's all highway as there is no urban anything here. And my truck is leveled, 295/60/20 tires and 4.56 gears....
  21. SierraHD17
    K and N filters don't make the bottom end come apart... and would result in high silica on the analysis. These 6.2s have plenty of wrist pin and piston fitment issues.. it's why I have a core one as they are easy to find as warranty replacements.
  22. SierraHD17
    No. Truck is totally stock.
  23. SierraHD17
    Well did an analysis on my 2013 6.2s oil and what a surprise... high iron content to the tune of 91 ppm which the lab is very concerned with. No surprise as the thing has this ridiculous rattle that kind of comes and goes... it's almost a knock in the bottom end. Truck has like 55000 miles on it.... Good thing I have a 6.2 core sitting in the shop I was going to build.. might need it soon.
  24. SierraHD17
    If a whipple on an L96 only makes what a 6.2 lays down it has something seriously wrong with the setup. That said these will be very mild so who knows. The truck will be a 1000 to 1500 lbs heavier minimum which accounts for most of it.
  25. SierraHD17
    It works absolutely fine venting the crankcase. An emissions method is not blowing anything up... same logic that freaks when guys remove catalytic converters. I have the same filtration method on my LS swapped Nova..
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