03-08-2020, 05:54 AM | #1 |
weSS1LEy
Drives: 2015 camaro 2ss/rs/1le Join Date: Sep 2015
Location: Kelowna
Posts: 510
|
Zr1 vs gt500
Why does the gt500 make 760hp with 5.2 litre and 12 lbs boost and the zr1 makes 760hp with 6.2 litre and 14 pounds boost? sounds like mustang is doing more with less!!
__________________
Rotofab, arh no cats, atak, elite cc, 94 octane tune, Mobil 1, phastek scoop, custom cam 230/243 .621 .604 114+4, related cam kit stuff. 470/435 rwhp/rwtq
|
03-08-2020, 12:15 PM | #2 |
Drives: 2015 SS 1LE Red Hot, 1970 Chevelle Join Date: Apr 2012
Location: Chino, CA
Posts: 6,989
|
Overhead cams and 4 valves per cylinder. Also, GM doesn’t really push the envelope. They probably left plenty of power on the table.
__________________
|
03-08-2020, 02:49 PM | #3 |
Drives: 14 SS/ 1LE Join Date: Jun 2013
Location: parts unknown
Posts: 922
|
I wouldn't say doing more with less. The mustang makes peak power at 7300 rpm vs 6400 rpm on the Corvette and makes 100 less peak torques. And more importantly the Corvette weighs about 700 lbs less.
__________________
2014 1SS/1LE
AGP 57/57s, E85 + meth injection, Monster triple, ZL1 diff swap, Z28 coilovers |
03-08-2020, 07:12 PM | #4 |
weSS1LEy
Drives: 2015 camaro 2ss/rs/1le Join Date: Sep 2015
Location: Kelowna
Posts: 510
|
Yes I just meant less cubes and less boost equals same power.
__________________
Rotofab, arh no cats, atak, elite cc, 94 octane tune, Mobil 1, phastek scoop, custom cam 230/243 .621 .604 114+4, related cam kit stuff. 470/435 rwhp/rwtq
|
03-09-2020, 07:57 AM | #5 |
Drives: '17 Corvette Grand Sport M7 Join Date: May 2012
Location: Pennsylvania
Posts: 3,748
|
The GT500 has a DOHC engine (as Ford has used in the Mustang for decades). The Vette has a pushrod engine (as Chevrolet has used for decades). The cubes may be more for the Vette, but put side by side, the DOHC engine is much larger, whereas the pushrod is very compact.
__________________
MY RIDE: 2017 CORVETTE GRAND SPORT--TRIPLE BLACK, 7 SPEED MANUAL, VARARAM TCR-7 INTAKE, BORLA CATLESS X-PIPE, CARBON FIBER STAGE 2 AERO, MGW SHORT-THROW SHIFTER
**SOLD**2011 TRIPLE BLACK SS CONVERTIBLE--6 SPEED MANUAL, MANY MODS, 455 RWHP/435 RWTQ DAD'S RIDE: 2012 ZL1 #1866--BLACK, 6 SPEED MANUAL, EXPOSED CF HOOD, POLISHED WHEELS, SUNROOF, ROTO-FAB INTAKE "Silly Americans, taking from the rich and giving to the poor only works in fairy tales. Success is earned here!". |
03-09-2020, 08:06 AM | #6 |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,787
|
Horsepower is just an empirical derivation based on torque and rpm. There is a direct relationship between rpm and horsepower.
__________________
Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
03-09-2020, 12:10 PM | #7 |
1st Civ. Div.
Drives: Camaroless for now...RIP "Big SexZ" Join Date: Dec 2007
Location: Savannah, Ga
Posts: 2,726
|
Boost is not always indicative of true power but it is a measurement of restrictions so the 4 valve head/intake has less restrictions than the 2 valve head/intake. The smaller 5.2 DOHC is more the equal to cubic inches of the 2 valve 6.2 motor setup so things are more equal than not here so you can't really compare the engine sizes.
__________________
Swift....Silent....Deadly
|
03-09-2020, 01:23 PM | #8 |
Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,155
|
Anyone have any idea about the weight of each motor. To me that would be a better comparison vs displacement.
|
03-09-2020, 02:44 PM | #9 |
Drives: 16 Camaro SS, 15 Colorado Join Date: May 2009
Location: Jefferson City, Missouri
Posts: 13,943
|
Not sure of exact numbers, but I believe they are within 10 - 15 lbs of each other.
__________________
2016 Camaro 1SS - 8-speed - NPP - Black bowties
2010 Camaro 1LT V6 (Sold. I will miss her!) |
03-09-2020, 05:20 PM | #10 |
Drives: 14 SS/ 1LE Join Date: Jun 2013
Location: parts unknown
Posts: 922
|
it looks like the shipping weight on the LT5 crate engine is 619 lbs so its in car weight is probably a few lbs less.
__________________
2014 1SS/1LE
AGP 57/57s, E85 + meth injection, Monster triple, ZL1 diff swap, Z28 coilovers |
03-09-2020, 07:18 PM | #11 |
Account Suspended
Drives: 19 Camaro SS 1LE, 03 Ford Lightning Join Date: Nov 2019
Location: South Carolina
Posts: 334
|
This is simple, the TVS2650 on the GT500 motor is a way better/more efficient blower than the small POS blower GM burdened the LT4 with. LT5 which also uses the TVS2650 is a better comparison to the GT500 motor.
|
03-09-2020, 08:16 PM | #12 |
Drives: 14 SS/ 1LE Join Date: Jun 2013
Location: parts unknown
Posts: 922
|
OP did ask the question about the LT5....
__________________
2014 1SS/1LE
AGP 57/57s, E85 + meth injection, Monster triple, ZL1 diff swap, Z28 coilovers |
03-09-2020, 08:39 PM | #13 |
Drives: 2011 Camaro 2ss Join Date: May 2013
Location: nj
Posts: 1,559
|
|
03-09-2020, 09:06 PM | #14 |
Account Suspended
Drives: 19 Camaro SS 1LE, 03 Ford Lightning Join Date: Nov 2019
Location: South Carolina
Posts: 334
|
You are correct. For some reason I was reading ZL1 instead of ZR1. My bad.
Pretty sure the ZR1 makes noticeably more torque than the GT500 by close to 100 lb-ft if I remember correctly. Also what compression are both motors running? That would make a noticeable difference. GM typically sets up their motors to have a broader and more linear powerband compared to the Coyote based motors even though I'm sure the GT500 motor is pretty strong most everywhere. Just like with an LSx the GEN5 motors personality is easily manipulated by a cam swap. |
Post Reply
|
|
|