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-   -   What amount of boost are you running on your LT4? (https://www.corvetteforum.com/forums/c7-z06-discussion/4236305-what-amount-of-boost-are-you-running-on-your-lt4.html)

chevyfanatic 01-27-2019 07:07 PM

What amount of boost are you running on your LT4?
 
  • What are you running for boost on your Lt4 ?
  • Did you notice issues if going over 10 psi (e.g stock boost)
  • Have you made any cooling or other mods to support the higher boost ?
  • What is the highest safe limit on these motors ?
thanks ahead of time :thumbs:

Higgs Boson 01-27-2019 07:09 PM

I'm running about 18.5 psi with no extra cooling mods or issues.

chevyfanatic 01-27-2019 07:14 PM


Originally Posted by Higgs Boson (Post 1598770183)
I'm running about 18.5 psi with no extra cooling mods or issues.

thats truly insane. my tuner said 15 psi would be about safest to go and I have the fasterproms and the bigger radiator on the Maggy 2.3.
Would think tons of heat on the stock 1.7 ?

Higgs Boson 01-27-2019 08:41 PM


Originally Posted by chevyfanatic (Post 1598770207)
thats truly insane. my tuner said 15 psi would be about safest to go and I have the fasterproms and the bigger radiator on the Maggy 2.3.
Would think tons of heat on the stock 1.7 ?

I am running a whipple

eaglesnick 01-27-2019 08:43 PM


Originally Posted by Higgs Boson (Post 1598770688)
I am running a whipple

Are you on stock fuel system and pump gas?

Higgs Boson 01-27-2019 08:47 PM


Originally Posted by eaglesnick (Post 1598770702)
Are you on stock fuel system and pump gas?

yes unless I run E85 or my weaponX port system turns on.

eaglesnick 01-27-2019 08:52 PM


Originally Posted by Higgs Boson (Post 1598770732)
yes unless I run E85 or my weaponX port system turns on.

What trips/triggers the ports system?

Higgs Boson 01-27-2019 08:57 PM


Originally Posted by eaglesnick (Post 1598770772)
What trips/triggers the ports system?

map and rpm

JHEBERT 01-27-2019 09:19 PM

I’m running 18.2psi but chasing spark issues since I got control of the throttle body down low. I’m going to gap the plugs tighter than a crabs ass and go from there...

jstewart 01-27-2019 09:50 PM

14 PSI, Fasterproms aux tank, Fasterproms thermal spacers, Cordes heat exchanger, meth injection, 50% E-85, no issues.

andreas g. 01-27-2019 09:58 PM

I’m running 14 psi. Maggy 2300 with a 5% lower, kooks, afe, x tank, and tuned. 91 pump gas.

Corvette4ever 01-28-2019 12:37 AM

Higgs, are you still running ARH mid length with stock secondary cats?

Higgs Boson 01-28-2019 07:25 AM


Originally Posted by Corvette4ever (Post 1598771660)
Higgs, are you still running ARH mid length with stock secondary cats?

arh mid lengths with no cats

Mohammed Rashed 01-28-2019 08:36 AM


Originally Posted by chevyfanatic (Post 1598770174)
  • What are you running for boost on your Lt4 ?
  • Did you notice issues if going over 10 psi (e.g stock boost)
  • Have you made any cooling or other mods to support the higher boost ?
  • What is the highest safe limit on these motors ?
thanks ahead of time :thumbs:


21-22 psi on whipple

chevyfanatic 01-28-2019 01:14 PM


Originally Posted by Mohammed Rashed (Post 1598772240)



21-22 psi on whipple

thats insane ! supporting mods like cooling/meth etc ? whats your whp ?

chevyfanatic 01-28-2019 01:15 PM


Originally Posted by andreas g. (Post 1598771152)
I’m running 14 psi. Maggy 2300 with a 5% lower, kooks, afe, x tank, and tuned. 91 pump gas.

nice and what whp on DYNO ? are you at sea level ?

thanks

Mohammed Rashed 01-28-2019 01:37 PM


Originally Posted by chevyfanatic (Post 1598774149)
thats insane ! supporting mods like cooling/meth etc ? whats your whp ?

5 gallon water tank in trunk to weapon X heat exchanger. Meth for octane and more timing. Using port injection for fueling pushing over 900 on pump 93. No heat what so ever.

Higgs Boson 01-28-2019 03:08 PM


Originally Posted by Mohammed Rashed (Post 1598774308)


5 gallon water tank in trunk to weapon X heat exchanger. Meth for octane and more timing. Using port injection for fueling pushing over 900 on pump 93. No heat what so ever.

are you running an aftermarket camshaft?

Thomasmoto 01-28-2019 03:38 PM

I'm at about 17 psi on the stock blower and yes it gets very hot. I'm mostly going to be drag racing it from now on. Only have 1 track day scheduled for this year and I'm able to cool it at the drag strip. If I were going to continue road course I would do something else about it. I have installed the DeWitt's Z06 " cooling kit " it has helped, but doesn't completely cure the problem.

chevyfanatic 01-28-2019 05:22 PM


Originally Posted by Thomasmoto (Post 1598775162)
I'm at about 17 psi on the stock blower and yes it gets very hot. I'm mostly going to be drag racing it from now on. Only have 1 track day scheduled for this year and I'm able to cool it at the drag strip. If I were going to continue road course I would do something else about it. I have installed the DeWitt's Z06 " cooling kit " it has helped, but doesn't completely cure the problem.

thanks ! how much power is that bad boy putting down ? Any other supporting mods like CAI/Headers/Cam ?


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