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Old Aug 28, 2019 | 09:57 AM
  #1  
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Default RWHP question

My car is a 2015 c7 stingray z51. The car is stock. 7speed. Running 93 octane.

Is it possible to achieve ~600 rwhip with the following mods?
  • LT4 conversion
  • z06 hpfp
  • z06 injectors
  • alky meth (100% meth)
  • 2.5" pulley
  • NGK 6510 - High Performance Iridium Spark plugs
  • Edelbrock IC reservoir tank (additional coolant capacity that will add~ 2 gals)
  • Continue to run 93 octane
Thank you!
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Old Aug 28, 2019 | 10:01 AM
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Probably not with those mods.

600 Wheel is about 200 more than a stock Lt1. All you seem to be doing is adding a LT$ blower and stuff.

(I could be wrong... wouldn't be the first time)
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Old Aug 28, 2019 | 06:26 PM
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It would be close, my guess 580ish. Pulley upgrade and ported blower then yes with good tune.
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Old Aug 28, 2019 | 06:39 PM
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RWHP is not the same as advertised crank HP// RWHP on a 2015 Z51 on a " Real Honest dyno" like a Mustang dyno is around 350/360 hp. If you are talking about Dyna jet dynos designed to give boosted numbers ( and bragging rights )
. Just saw an automatic 2016 z51 done on a Mustang
Max power HP 361.9
Max torque 434.1
at the wheels.

trying to get real 600 RWHP will be difficult. all advertised numbers from GM are at the crank.
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Old Aug 28, 2019 | 09:37 PM
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As my race buddy (who holds/held a number of records with his "home built" engines at Bonneville says, "If you want more power, up the boost and fuel!" The question often then becomes, how long you could do so... more so than if. : yesnod:


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Old Aug 29, 2019 | 12:24 PM
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Originally Posted by Evil-Twin
RWHP is not the same as advertised crank HP// RWHP on a 2015 Z51 on a " Real Honest dyno" like a Mustang dyno is around 350/360 hp. If you are talking about Dyna jet dynos designed to give boosted numbers ( and bragging rights )
. Just saw an automatic 2016 z51 done on a Mustang
Max power HP 361.9
Max torque 434.1
at the wheels.
trying to get real 600 RWHP will be difficult. all advertised numbers from GM are at the crank.
Yeah, no. It can't be that drastic (360HP at sea level?). My Dynocom result was 425rwhp/5750rpm and 432tq/4400rpm at 6100 feet. Two mods: CAI and 3" cat-back on a Z51/C7. This correlates perfectly with what I've seen other C7 do (around 405-415rwhp bone stock). I think Mustang is good, but it can't be that drastic.
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Old Aug 29, 2019 | 12:43 PM
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Why not just get a Z06 instead of modding a base corvette?
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Old Aug 29, 2019 | 01:26 PM
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Originally Posted by Sub Driver
Why not just get a Z06 instead of modding a base corvette?
Price!

My setup w/ tune is $5K (not including the meth since Z06 doesn't have it) . Much less than a c7 z06 for the same model year selling for $58K (that's the cheapest I cound find w/ more miles than mine). I purchased my '15 z51 for $41K. A difference of $17K for a z06 vs. $5k for the conversion, blower and tune. Big difference!

AutoTrader link below:

https://www.autotrader.com/cars-for-...&firstRecord=0

Last edited by jcdives; Aug 29, 2019 at 01:46 PM.
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Old Aug 29, 2019 | 01:36 PM
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Originally Posted by chefcg1
It would be close, my guess 580ish. Pulley upgrade and ported blower then yes with good tune.
After surfing the web I am looking at around 540rwhp and an additional 42 rwhp with 100% meth. I'm more than excited with those results!
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Old Aug 29, 2019 | 02:11 PM
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Originally Posted by Evil-Twin
RWHP is not the same as advertised crank HP// RWHP on a 2015 Z51 on a " Real Honest dyno" like a Mustang dyno is around 350/360 hp. If you are talking about Dyna jet dynos designed to give boosted numbers ( and bragging rights )
. Just saw an automatic 2016 z51 done on a Mustang
Max power HP 361.9
Max torque 434.1
at the wheels.

trying to get real 600 RWHP will be difficult. all advertised numbers from GM are at the crank.
That's a 100hp loss at the wheels? That's way low, 395 for a automatic & 405ish for the manual is more in line for hp
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Old Aug 29, 2019 | 02:34 PM
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Originally Posted by Avanti
As my race buddy (who holds/held a number of records with his "home built" engines at Bonneville says, "If you want more power, up the boost and fuel!" The question often then becomes, how long you could do so... more so than if. : yesnod:


I fail to see the issue here...


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