[2023_ZL1-AUTO]

Originally Posted by Joshinator99

... Katech dual in tank pump and Too High PSI port injection is probably the best way to go... :

Katech has my 2023 ZL1 in their shop now and is getting exactly what Joshinator99 mentioned ! A real fuel system and THPSI port injection ! I've never opened my engine/touched oil. But, when I get my ZL1 back (I hope this Friday), she'll have more horse power than I'll have tire! I'll be running straight E85 as well, no mixing!!! All bolt on mods! Katech is a solid choice!!!

Here is my build thread for reference: The last few posts as of now show the Katech shop work! (Thanks Mike & Nick and the rest of the Katech Team!)

https://www.camaro6.com/forums/showthread.php?t=611982

[KingLT1]

Fueling is expensive to upgrade, especially if you run E which I recommend. In a manual car +30 injectors and a low side will support 800whp on E60. However, Port Injection offers the best ROI. I still like DI only because it's less clutter in the engine bay, but if the installer takes the time to run the wires and hoses, it can be hidden well.

You are going to be 4-5k for fueling minimum regardless of which direction you go. THP port kit comes in around 3k, then you still need at minimum a DSX aux low side which is another 1200.00.

You don't need to do heads, but if you ported them and milled for a little compression bump(10.5-10.8:1) then you would see more than 20whp and it wouldn't be a problem at all if you run Ethanol. This wouldn't be a bad idea because you can make more power on motor and not have to spin the blower as hard. X port really wakes it up the stock blower so good choice there. I would opt for a stage 2 cam instead of the 3.

[Mike@SolerPerformanceLLC]

Originally Posted by Vettethret

I have been out of the game since 2012. My last big build was a widebody LS3 C6 with a TVS 2300 that Made just over 800 rwhp (A LOT back then). Obviously the LT and LS platforms are vastly different. I am going to start calling shops tomorrow and I want to make sure I can speak somewhat intelligently when talking about my build request.

From what I've been reading, If I do a Low side, Alky, Cam with flex fuel, It would be E30-E50, is that correct? Ive also had a shop tell me previously on this platform they won't do a cam without heads, first time in numerous LS builds I've ever heard of that?

The build below is what im looking to do (Car already has a GT Haus exhaust and MM Catch Can). Any suggestions to add (Not looking at heads)?

Stage 3 Cam
Big Gulp
103 TB
Kong X Port
LMR Lid
Pullies
Dual Alky
Low Side
ARH 2" long Tubes
Flex Fuel
Tune

For the 103mm TB here at Soler Performance we sell Ported 103mm TB. Whenever you are ready to get one just let us know.
Use discount code SALE5P at checkout.

Website: https://www.solerengineering.com/gen...ors/se1000-103
Email: tiffany@solerengineering.com
Text/call: (850) 512-9262

[BMLMZ]

Ah the dreaded fuel system limitations. Got to love DI LT motors.

[Z OH 6]

Originally Posted by BMLMZ

Ah the dreaded fuel system limitations. Got to love DI LT motors.

With port injection, the sky's the limit on how much power you can make. Sure there's an upfront cost, but the ZL1 costs a good bit less than a GT500 or a Hellcat and at that point you can do whatever you want in a platform that is more capable at doing everything than the GT500 or a Hellcat.

[SOCAL.M6.ZLE]

Originally Posted by Vettethret

That's exactly why I won't do heads. Not enough return for the money. Im not trying to squeeze out every last HP.

I agree with you, but that assumes your goals don't change down the road... and like most will attest here. They do. So, with the motor pulled or torn apart "in-car" the cost to port is minimal IMO...

To me, if you were going to skimp, hold off on a "bolt on" part you can easily add later.... but when you open the motor.... go all out my friend, because it sucks to open it twice.

[jlaudio11]

Originally Posted by KingLT1

You are going to be 4-5k for fueling minimum regardless of which direction you go. THP port kit comes in around 3k, then you still need at minimum a DSX aux low side which is another 1200.00.

A few bucks can be saved on the low side aux kit by doing your own lines and pump setup controlling it with the THP reflex plus controller like I did. No need for a separate control method.

[KingLT1]

Originally Posted by jlaudio11

A few bucks can be saved on the low side aux kit by doing your own lines and pump setup controlling it with the THP reflex plus controller like I did. No need for a separate control method.

Correct, but the main point I was attempting to make is the fueling upgrades are going to cost more than what I believe the OP realizes regardless which direction he goes.

[Katech_Mike]

Originally Posted by Vettethret

I should have added, I don't want to spend 5k on a fuel system I will definitely do some research in that forum. Thank you.

If you don't want to spend the money to properly upgrade the fuel system you are destined for mediocrity.

The biggest crutch on the LT platform is the fuel system. Both high and low side need to be addressed pretty early on to be successful.

[radz28]

Originally Posted by KingLT1

Correct, but the main point I was attempting to make is the fueling upgrades are going to cost more than what I believe the OP realizes regardless which direction he goes.

Agreed.

It's nice we're getting more options for fueling. Katech came on with a bucket upgrade, which I would have done (before the DSX low-side) if it was available at the time. As JL' pointed out, if you add something like THPSI's PI controller (REFLEX), you can save a little money by not having to purchase a low-side controller, too - which you do. The REFLEX can control the aux' pump, too, and if you don't mind a little fuel plumbing, you can make your own low-side.

Be careful exploring bucket upgrades, though. I'm not knocking the Katech bucket at all (I am an advocate of it, in fact), but in the beginning, I didn't understand the pump that's added in the bucket takes the room of the OEM pre-filter. That means, you have the ADD one somewhere. That was a little tricky at first (I haven't done many fuel upgrades, but was up for a challenge), but after figuring out where to put everything, it was relatively easy. DSX is coming (or might be selling already) with a bucket upgrade, too, which is more expensive than the Katech, but is an alternative.

The point is, there are more options than ever out there. Take your time exploring them, and make sure they fit your goals, and give you room in the future. Make sure to define goals, first, and go from there. You'll be spending more money for fueling on this platform, but there are more and more options as time goes on.

JMO

AND FIND A GOOD CALIBRATOR!!! If you read enough around here, you'll quickly see who knows their stuff.

[Joshinator99]

Originally Posted by Katech_Mike

If you don't want to spend the money to properly upgrade the fuel system you are destined for mediocrity.

The biggest crutch on the LT platform is the fuel system. Both high and low side need to be addressed pretty early on to be successful.

Bingo. If $5K for fueling is a deal breaker, then you can’t afford to mod this platform.

[Vettethret]

Originally Posted by Joshinator99

Bingo. If $5K for fueling is a deal breaker, then you can’t afford to mod this platform.

Really, you must be Nostradamus?. I paid cash for the car (2023), and have almost 25k into it. Just because I dont "Want to" spend 5k on fuel for an extra 100 hp, doesn't mean I dont have the means. I've done numerous 40-70k builds. You shouldn't presume.

[Z OH 6]

Originally Posted by Vettethret

Really, you must be Nostradamus?. I paid cash for the car (2023), and have almost 25k into it. Just because I dont "Want to" spend 5k on fuel for an extra 100 hp, doesn't mean I dont have the means. I've done numerous 40-70k builds. You shouldn't presume.

He didn't presume anything, he just stated that if $5K is a problem to address the major bottleneck then you shouldn't be considering modifying this platform.

I will say, you can make up to 700whp safely on this platform on 93 octane without meth and without having to modify the fueling but if that's not enough power for you, then you have no choice but to modify the fueling. You have been given a lot of great advice here by a lot of experienced people, so the decision is yours on how much you want to spend and how far you want to go.

[2023_ZL1-AUTO]

To add to the OP Q's regarding upgrading the fuel system. My current Katech build that's almost complete includes the Katech dual fuel pump drop-in and THPSI port injection. This allowed the removal of the low side JMS Fuel Booster! One thing I'm personally happy I've not done yet is touch the internals of the engine. I had the blower Kong X-ported, added 2.3" upper, a 9.45" lower and it will run straight E85 (no mixing thank goodness!) For me, this build was worth the cost, although it was up there in price. I feel for me, what I did made a cleaner install/build overall and it'll still drive like a stock ZL1, but with a lot more added power!