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03-17-2012, 12:37 AM
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#1 |
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Registered User
Join Date: Jul 2011
Location: hanceville alabama
Posts: 268
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why LS???
Why get an LS motor over a good running carb motor? Is it really that much better? MPG? throttle response? Someone who has did this swap please explain why this is a better choice vs a good cheap carb motor, thanks
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03-17-2012, 01:31 AM
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#2 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: why LS???
1. no carb
/thread seriously tho, at this point its becoming "why buy an old carbed motor?" Gen III/IV motors have come down enough in price, and the stock hp and tq #'s are better than that of many mild 350 builds ive seen, better mpg, the fact that you can start it in any weather, not have to re-jet the thing, just as large of an aftermarket now, in some cases you can build more hp cheaper, especially if you want to play around with forced induction. And if you REALLY want, you can carb an LS and it'll still be better than an old mouse motor rebuild.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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03-17-2012, 09:35 AM
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#3 |
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Still Just Havin Some Fun!
 
Join Date: Jun 2007
Location: Piedmont, Oklahoma
Posts: 1,145
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Re: why LS???
Fuel injection, roller cam, better MPG, easy starts, more instant HP and many other reasons. I have been a carb guy forever and only recently attempted the swap. Now I just finished my 2nd swap. The origanal setup was a 400 small block with World products heads, forged internals, custom built carb and on and on... Had plenty of power and cost a fortune to build. Down side was 5 MPG, overheated often, constant carb adjustments and etc. The new 6.0/4l80e I purchased had less than 4,000 miles on it, I installed a comp cam and springs, FTI stall and had a custom dyno tune done.. Well I have over 400hp, no overheating, seems to be great on gas and I never have to mess with it. The 6.0 setup cost me 1/2 the price of the 400.
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a green one with some stuff done to it.... |
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03-17-2012, 03:16 PM
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#4 |
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Registered User
Join Date: Jul 2011
Location: hanceville alabama
Posts: 268
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Re: why LS???
Cool, i see what you guys are saying. Thank you for the replys
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03-17-2012, 06:24 PM
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#5 |
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Registered User
Join Date: Jul 2001
Location: North Delta, British Columbia
Posts: 1,344
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Re: why LS???
would you want a computer from the 70's versus a computer from today? Technology advancements...
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1992 Gmc 2wd 1972 Chevy Blazer 2wd |
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03-17-2012, 10:35 PM
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#6 |
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Registered User
 
Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,887
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Re: why LS???
Cheap, reliable HORSEPOWER. Nuff said.
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'20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids
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03-17-2012, 10:47 PM
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#7 |
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Registered User
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
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Re: why LS???
because the SBC uses 60 year old technology!
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my build threads '86 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415628 '67 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=635078 '63 GMC http://67-72chevytrucks.com/vboard/s...d.php?t=674682 |
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03-19-2012, 08:00 PM
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#8 |
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Registered User
Join Date: Jul 2011
Location: hanceville alabama
Posts: 268
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Re: why LS???
love you moose.....NO HOMO
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03-19-2012, 08:21 PM
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#9 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: why LS???
Just to echo what everyone else has said. You can get them so cheap now, they are actually very easy to work on, huge gains on technology like sequential multi port fuel injection, a coil for every plug, 6 bolt mains, factory rollor cam, factory aluminum heads, better MPG, better driveabilty, you name it! I really believe that the LS motors are MORE reliable then an old carb/HEI setup. GM has the first major tune up at 100k miles on the LS motors. You better be doing a tune up every 30k at least with the old stuff in my experinece! Nevermind the fact that these engines are designed to last 200k plus miles in high stress conditions using todays oil.
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03-19-2012, 10:32 PM
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#10 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: why LS???
small block size and weight...big block power!
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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03-19-2012, 10:48 PM
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#11 |
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A guy with a truck
Join Date: Sep 2005
Location: Germany, for now
Posts: 5,920
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Re: why LS???
No. Oil. Leaks.
Plus all of the above... Posted via Mobile Device
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-Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy |
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