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GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion Community Links Social Groups Pictures & Albums Members Search Forums Show Threads Show Posts Tag Search Advanced Search Find All Liked Posts Go to Page... 6.0 vs 8.1? Reply Subscribe Thread Tools Search this Thread Jan 30, 2013 | 08:14 PM #1 gmc123 Thread Starter Staging Lane iTrader: (2) Joined: Aug 2011 Posts: 89 Likes: 0 From: MI 6.0 vs 8.1? Just wondering what you guys think about the 8.1 vs the 6.0. It seems like most people on here do the 4.8/5.3 to 6.0 swap (myself included) but i dont see too many people with 8.1's. The reason why im asking this is because my buddy is swapping an 8.1 and an allison trans into his 87 silvy and that made me think why isnt everyone else doing stuff like this? ik the 8.1's are HUGE jw what you guys think about the comparison if any of the two. Reply 0 0 gmc123 View Public Profile Find More Posts by gmc123 View iTrader Profile Jan 30, 2013 | 08:51 PM #2 Suburbazine TECH Fanatic Joined: Feb 2009 Posts: 1,635 Likes: 1 From: Baton Rouge, LA Nobody swaps 8.1 cause it's a turd with no aftermarket support. Reply 0 0 Suburbazine View Public Profile Visit Suburbazine's homepage! Find More Posts by Suburbazine View iTrader Profile Jan 30, 2013 | 09:42 PM #3 RacinRust TECH Apprentice Joined: Feb 2011 Posts: 396 Likes: 1 From: North Texas Raylar Power. But don't count on using the factory heads they are junk for peformance! And open your wallet WIDE. Reply 0 0 RacinRust View Public Profile Find More Posts by RacinRust View iTrader Profile Jan 30, 2013 | 10:41 PM #4 Beatdown Z Laid Back iTrader: (18) Joined: Jan 2007 Posts: 2,389 Likes: 10 From: Newark, DE The only advantage to the 8.1L swap is raw bottom end torque. Besides that, the 6.0 shines everywhere else. I have an old lifted '81 Chevy and as much as i'd like to do an LS swap, i think a mild high-torque big block would be much more fun. Reply 0 0 Beatdown Z View Public Profile Visit Beatdown Z's homepage! Find More Posts by Beatdown Z View iTrader Profile Jan 31, 2013 | 04:59 AM #5 Suburbazine TECH Fanatic Joined: Feb 2009 Posts: 1,635 Likes: 1 From: Baton Rouge, LA Quote: Originally Posted by Beatdown Z The only advantage to the 8.1L swap is raw bottom end torque. Besides that, the 6.0 shines everywhere else. I have an old lifted '81 Chevy and as much as i'd like to do an LS swap, i think a mild high-torque big block would be much more fun. For the effort, you're better off dropping a LLY/LBZ in there. Reply 0 0 Suburbazine View Public Profile Visit Suburbazine's homepage! Find More Posts by Suburbazine View iTrader Profile Jan 31, 2013 | 07:02 AM #6 gmc123 Thread Starter Staging Lane iTrader: (2) Joined: Aug 2011 Posts: 89 Likes: 0 From: MI Yeah I gotcha that pretty much answers my question. Thanks guys I always wondered why. Reply 0 0 gmc123 View Public Profile Find More Posts by gmc123 View iTrader Profile Feb 13, 2013 | 07:17 PM #7 sleeperlqx TECH Resident iTrader: (3) Joined: Nov 2009 Posts: 814 Likes: 0 After many nights of a research the 8.1 vs the 6.0 added up to a hell no. The 6.0 makes more hp as well. Plus with the mid to top end, it will walk right around the BBC while sipping on fuel, running low on gas. Reply 0 0

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sleeperlqx View Public Profile Find More Posts by sleeperlqx View iTrader Profile Feb 14, 2013 | 03:16 AM #8 07NNBSVMAX Launching! Joined: Sep 2010 Posts: 254 Likes: 0 Yep my 6.0 flat smoked an 8.1, all I had was exhaust and cold air at the time. He had exhaust and a wait4me tune Reply 0 0 07NNBSVMAX View Public Profile Find More Posts by 07NNBSVMAX View iTrader Profile Feb 19, 2013 | 01:54 PM #9 hog TECH Fanatic Joined: Oct 2005 Posts: 1,379 Likes: 0 From: Woodstock Ontario Canada For towing, 8.1 all the way. For performance use, 6.0 mods are cheaper and more plentiful. One torques along, other requires revs to use its power. Stock they were 340hp@4200rpm/455 lb/ft@3200rpm the LQ9 6.0 was 345hp@5200rpm/380lb/ft@4000rpm. LQ4 6.0 was 300hp@4400rpm-325hp@5000rpm/360-370lb/ft@4000rpm for torque depending on application. Dart now makes heads for the 8.1. You can get pistons, valvetrain, cams, intakes from the aftermarket. The marine 8.1 came in 2 official flavours, 375hp and 425 hp. In 2003 GM was testing a crate engine in boat racing that used the truck longblock with ported stock heads, different cam and valvetrain that made 525+hp/560+ lb/ft torque which is nothing to sneeze at. peace Hog Reply 0 0 hog View Public Profile Find More Posts by hog View iTrader Profile Reply Subscribe Related Topics Thread Thread Starter Forum Replies Last Post What kind of performance platform is a Yukon Denali? GMCtrk GMT 800 & Older GM General Discussion 18 Oct 6, 2015 04:48 PM 01 c3 ecsb awd 6.0 turbo turbo6c3 Trucks and SUV Classifieds 1 Oct 5, 2015 07:11 PM Bought a truck and the tq converter is not locking, any idea? Cammed4ever GM Engine & Exhaust Performance 5 Sep 30, 2015 04:38 PM swapping alum block for iron trevorh1 INTERNAL ENGINE MODIFICATIONS 4 Sep 27, 2015 09:47 PM my new boosted engine sTNT971 FORCED INDUCTION 6 Sep 26, 2015 05:22 PM Tags 1500, 53, 60, 81, 81vs, hp Back to Subforum GMT 800 & Older GM General Discussion View Next Unread Help with interior clips Thread Tools Show Printable Version Search this Thread Advanced Search Thread Tools Show Printable Version Email this Page Advanced Search Reply Closed Thread Share

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