09-10-2014, 03:38 PM | #71 | ||
145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
Location: Conshohocken, PA
Posts: 1,146
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That being said, your assumption is also wrong. My argument was based on WEIGHT. Quote:
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09-10-2014, 04:16 PM | #72 |
Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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It does not weigh more. In fact the oil tank only weighs a few pounds and the lines are only a few pounds. Plus, who cares power per lb the motor weighs.
Where is the 50lb+ lbs coming from? LS7 uses Ti rods, ti valves, and lightweight materials. More displacement means less material on the block. In fact if you look at the motors in similar options the ls7 is 8lbs ligher according to GM authority. LS3 in grandsport vette with dry sump is 466, ls7 in z06 vette with dry sump is 458. Katech said a loaded ls7 long block without the oiling accessories comes in right at 430lbs which is ligher than the ls3. It all depends on how you are weighing it. Just long block (shortblock + heads) or with all the accessories which vary car to car, or ready to drop in with harness/etc. That is why you are seeing different numbers on the weights. You are comparing a bare ls3 long block to a loaded ls7 block. Take the power steering/brackets/alternator/etc off and it is within a few lbs. Just block weight LS1/2/3...........106 LS7..............107 RHS..............110 Dart Billet......128 6.0L Iron.......216 (weighed another block and changed this; first block had some weight added in the deck) LSX..............230 Billet heavy duty main caps on the ls7 block add about a lb.
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Nick
Corvette Z06 -1200ish rwhp Last edited by Unreal; 09-10-2014 at 04:26 PM. |
09-10-2014, 05:16 PM | #73 |
Jim
Drives: 2013 Black 2SS 1LE Join Date: Apr 2013
Location: Scottsdale, Arizona
Posts: 645
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State of Tune
[QUOTE=guerrillakilla13;7929153]I have a pretty good understanding of how motors work (and the anatomy of a motor), but I have a hard time understanding something. Why is it that the 5.0 coyote motor produces as much horsepower and torque as a 6.2 ls3? Our motors are huge so you'd think they'd produce more power. Why don't they? Is this a design thing or something?
EDIT sorry accidently posted in wrong forum[/QUOTE A lot of great comments and insights on this thread that explain the differences very well. However I have not heard about 'State of Tune'. GM tunes the SS through the ECU and cam to deliver the HP that will make the car competitive, get decent mileage and not infringe on the mighty vette. So comparing it by displacement alone to the 5.0 is not quite right. It is easy to imagine a different tune on the ECU and a slightly different cam and you would have 480 HP instead of 426. Just my two cents. All the other differences between basic design philosophy of DOHC and push rod engines aside. Jim
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Jim's Mongoose, 2013 1LE with Airraid CAI and PTB, mild to wild switch, and Vitesse throttle controller.400RWHP on Mustang Dyno In Phoenix, AZ on a 75 degree day.
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09-10-2014, 07:59 PM | #74 |
Drives: 2010 Camaro 2SSRS RJT L99 Join Date: Jun 2010
Location: Fort Shaw, Montana
Posts: 1,242
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Exactly what I was thinking.
You can order a GM built crate motor right now that is the LS3 376ci 525 HP 490 ft/lbs torque. http://paceperformance.com/i-1672048...te-engine.html Just one of many places you can order it from but has all the specs here. Just a bit of cam work and your at 525 HP.
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Fiftydriver
2010 SSRS, RJTC, L99, Maggie 2300 SC, 3.4" pulley, Roto-Fab CAI, Dynatech Supermaxx LT headers, Dynatech High Flow cats, Corsa Cat back exhaust, Dual Elite Engineering catch can, MSD wires and Jannetty custom tune, JRE custom diff w/ posi mod, 3.91 LPE gears, Pfaht trailing arms, Pfaht trailing arm and Diff bushings, drop springs and sport sway bars front and back, Fesler dual guage pillar pod w/ AM Cobalt Boost and A/F guages. More to come!! |
09-10-2014, 08:49 PM | #75 | |||
Drives: 2013 A6 GT 5.0 Join Date: Nov 2009
Location: Edmond, OK
Posts: 2,909
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Let me quote you again so you can see how incorrect your info is or can you not read what you wrote? You said and I quote " size wise the LS7 is a better comparison to the Coyote than the LS3 is" what part of this info is correct? How am I twisting your language by saying you are wrong. If any one has been going on to save their pride it's you. You are either a really stubborn person who will never admit they are wrong or you are slow. Which is it? Also another thing, you even bringing a LS7 into a conversation about a LS3 vs Coyote is laughable. Trying to say that a LS7 is a better comparison than a LS3 to a Coyote IN ANY WAY is retarded. Even if you never mentioned size, which you did despite you trying to back peddle the issue, you are still wrong about weight. Next time maybe you will hopefully know a little about what you are talking about before trying to prove your false point with links you looked up on Google.
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BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.
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09-10-2014, 10:07 PM | #76 | |
Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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[QUOTE=Jims Mongoose;7944291]
Quote:
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Nick
Corvette Z06 -1200ish rwhp |
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