C7 Z06 fuel pump
Thread Starter
Drifting
Joined: Oct 2014
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C7 Z06 fuel pump
I'm planning to supercharge my c7 and run flex fuel e85 was told need to change the fuel pump to a z06 pump anyone know how much and we're can I buy the z06 fuel pump or if there's another one I need to get
Dazed Confused & Verklemp
Joined: May 2008
Posts: 1,396
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From: Naples, FL & Clear Lake, IA
Someone was quoted $800-$900. You likely will also need larger injectors (from Z06) and a larger in-tank fuel pump like the Z06 or Caddy CTS-V. Squash makes great in-tank fuel systems that are bulletproof.
I once talked about running E85 + methanol spray in my EB Flex. Torrie MacPhail who was tuning it told me I needed 50% more fuel capacity to make it completely safe, and not run lean.
Good Luck!
I once talked about running E85 + methanol spray in my EB Flex. Torrie MacPhail who was tuning it told me I needed 50% more fuel capacity to make it completely safe, and not run lean.
Good Luck!
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
As Bob said, this is certainly not to be taken lightly. There are vendors here with custom fuel systems that will suit your needs should you want to move in the E85 direction.
Drifting
Joined: Jul 2005
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Will the z06 mechanical pump actually fit with the stock lt1 intake?? Heard the intake needs a little material taken away??
The z06 pump runs around 2900 psi vs the lt1 at 217x psi. I thought about playing with just and increase pressure at the pump in the tune and see if that gained me anything. Some math shows the lt1 injectors would flow very similiar to the lt4 at the z06 fuel pressure, be interesting to see
The z06 pump runs around 2900 psi vs the lt1 at 217x psi. I thought about playing with just and increase pressure at the pump in the tune and see if that gained me anything. Some math shows the lt1 injectors would flow very similiar to the lt4 at the z06 fuel pressure, be interesting to see
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
Originally Posted by Theta
My initial comments on the differences implied that the pumps were physically the same size. I didn't measure, but just eyeballed it. After proper installation, the LT4 pump fit the same as the LT1 pump did, and allowed for the neoprene cover to fit correctly over the top of it. The intake manifold also had no clearance issues, and didn't require any changes.
I have been told of only one instance where a shop has needed to modify an intake manifold for clearance concerns, but I have yet to ascertain why that was needed. I have spoken with all other members here who have done the swap, and we've had no issues at all with either the installation or use of the LT4 pump.
The LT4 pump will ensure you are maxing out the LT1 fuel rail and injectors, so when you're tuning for delivery, you can be sure you're actually going to get that delivery, rather than run out of fueling. To get fueling over and above that, you need to move to the LT4 rails and injectors, which of course require a retune.
For those needing even more fueling, there are custom systems available that can solve the issue of overworking the LPFP, etc. though that is outside of the scope of this thread.
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Drifting
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Tech Contributor
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From: Saint Louis MO
St. Jude Donor '14-'15
Thread Starter
Drifting
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Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
I would highly suggest speaking to someone like Joe@CPR about your needs and desires regarding your specific E85 fuel setup.
It is incredibly easy to overwork the LPFP and HPFP with E85, let alone at higher horsepower levels usually associated with boost.
The LT4 pump, rails, and injectors may very well still not be able to handle what you have in mind, as the in-tank LPFP runs out of steam.
It is incredibly easy to overwork the LPFP and HPFP with E85, let alone at higher horsepower levels usually associated with boost.
The LT4 pump, rails, and injectors may very well still not be able to handle what you have in mind, as the in-tank LPFP runs out of steam.
Thread Starter
Drifting
Joined: Oct 2014
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Likes: 69
I would highly suggest speaking to someone like Joe@CPR about your needs and desires regarding your specific E85 fuel setup.
It is incredibly easy to overwork the LPFP and HPFP with E85, let alone at higher horsepower levels usually associated with boost.
The LT4 pump, rails, and injectors may very well still not be able to handle what you have in mind, as the in-tank LPFP runs out of steam.
It is incredibly easy to overwork the LPFP and HPFP with E85, let alone at higher horsepower levels usually associated with boost.
The LT4 pump, rails, and injectors may very well still not be able to handle what you have in mind, as the in-tank LPFP runs out of steam.
I seen this c7 z06 run it go look what he added
https://m.youtube.com/watch?v=lOUKEL8HZNM
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
That's Jeremy Formato (a well-known/respected vendor here), and he's done work to the fuel system.
I'm not debating the use of E85 - I'm trying to give you additional information that several other vendors have had to go through a lot of trial and error to give us.
There are at least three E85 full fuel system upgrades for those that want to run high-HP numbers on straight E85 and boost. Joe has a good thread on power levels, and it will answer your questions more thoroughly.
I'm not debating the use of E85 - I'm trying to give you additional information that several other vendors have had to go through a lot of trial and error to give us.
There are at least three E85 full fuel system upgrades for those that want to run high-HP numbers on straight E85 and boost. Joe has a good thread on power levels, and it will answer your questions more thoroughly.
Thread Starter
Drifting
Joined: Oct 2014
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That's Jeremy Formato (a well-known/respected vendor here), and he's done work to the fuel system.
I'm not debating the use of E85 - I'm trying to give you additional information that several other vendors have had to go through a lot of trial and error to give us.
There are at least three E85 full fuel system upgrades for those that want to run high-HP numbers on straight E85 and boost. Joe has a good thread on power levels, and it will answer your questions more thoroughly.
I'm not debating the use of E85 - I'm trying to give you additional information that several other vendors have had to go through a lot of trial and error to give us.
There are at least three E85 full fuel system upgrades for those that want to run high-HP numbers on straight E85 and boost. Joe has a good thread on power levels, and it will answer your questions more thoroughly.
Supporting Vendor
Joined: Feb 2009
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From: Mesa Az
We have a setup we do that will supply enough fuel for easily 900 rwhp on e85 in a manual car. around mid 800 in an auto, I will gladly tell you exactly what we did and help you out.
__________________
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Thread Starter
Drifting
Joined: Oct 2014
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