[1ssa_camaro]

Hey guys, I currently have long tube headers with x pipe, intake and a flex fuel tune. I was looking at a whipple supercharger for the car. What’s needed so that my car can handle the whipple? I’m still planning on running E85 with the whipple. Will I need the whole LT4 fuel system? If I do, what parts does the lt4 system consist of. Any other parts that you guys recommend? Thank you.

[JSH]

Stock pump will handle 850hp, so buy one that will make say 11# boost.

[Jhunsberger]

Check out the 'forced induction' section. Since you have an SS I would highly recommend the LT4 in tank low side, high side pump and injectors. I am also a 17 SS with a whipple. Injectors have been hard to find because of everything going on. Do some digging in the other section you will find lots of info. There are some very knowledgeable members and vendors on here. Ted Jannetty is always willing to share recommendations along with others.

[PeteSS2018]

Stock fuel system will be fine if youre not wanting to make more than approx 650hp, after which you need more fuel and (as best as I am advised) better pistons. Also, recommended to have a catch can, but not essential. Some say high flow cats for boost, but it seems like its a nice to have, not essential.

[Jhunsberger]

Originally Posted by PeteSS2018

Stock fuel system will be fine if youre not wanting to make more than approx 650hp, after which you need more fuel and (as best as I am advised) better pistons. Also, recommended to have a catch can, but not essential. Some say high flow cats for boost, but it seems like its a nice to have, not essential.

Since the OP will be running E85 the stock LT1 fuel system will not support this, which also means a custom tune. He will have to upgrade to the LT4 system.

[Puddin]

Originally Posted by Jhunsberger

Since the OP will be running E85 the stock LT1 fuel system will not support this, which also means a custom tune. He will have to upgrade to the LT4 system.

Yep and even with the Lt4 fuel system I don't think he can do full E85 so he's going to have to mix it everytime if he wants to use. Depending on his power goals he will also need a low side aux pump and a cam to help with the high side.

[KingLT1]

Here is my setup:

Whipple 3.375 Pulley
Rotofab Big gulp
LT5 Throttle body
CA cat deletes
Flex sensor
LT4 injectors
LPE HPFP
LT4 tank pump with JMS voltage booster.

When the temps drop below 65, E55-60 is as high as I can run. Above those temps I can run E60- E65. Likely because I see a increase in boost.

When I was on the 3.5 pulley with regular Rotofab I could run full pump E85.

Low side holds fine, the high side starts dropping off with the current setup @ 10.5psi peak If I run more then E60. It should be pushing right at 700whp with this combo. I will probably stop here and call it unless I decide to do drop in pistons/rods. It's plenty of power as is anyway.

Note, You can't run this power level on 93 due to not enough octane for the compression unless you do a cam to bleed off some dynamic compression or run meth. I chose to spend a little extra money on fuel syst. because I didn't want to run meth. Mixing E is easy. 10 gallons of pump + 5 gallons of 93 nets E55-E60 depending on what's at the pump. Some are E78 others E80.

There are also other methods for fueling such as xdi and port injection. You are just going to have to do some research and figure out what you think works best for your goals. My advice would be to run higher octane whatever you do unless you lower the compression. 93 isn't really enough octane for much boost with the LT1's really high dynamic compression.

[L78toLT1]

If you stick with 93, all you need is the blower as long as you stay with the entry level, ~6psi pulley setup. Add e or boost and you'll need the full LT4 fuel system and probably a JMS voltage booster.
My stock fuel system held up fine at ~570whp on my Maggie.

[Mbrajkovic1]

Originally Posted by Puddin

Yep and even with the Lt4 fuel system I don't think he can do full E85 so he's going to have to mix it everytime if he wants to use. Depending on his power goals he will also need a low side aux pump and a cam to help with the high side.

I have the lt4 blower on my setup with peak 6.5 psi. Running the lt4 fuel system with e70, no problem. As long as you aren't cranking the boost OP should be fine.

[KingLT1]

Yes...6 psi on E70 with LT4 fueling shouldn't be a problem.

Jenetty racing did a Whipple setup On E60 with 3.25 pulley and LT4 fuel system. It made 620whp @ 9psi. Everything else was stock down to the airbox. It did not have enough fuel system to do any more mods like a larger throttle body, big gulp intake, Cat deletes or Headers which would likely add another 60-80whp. https://www.camaro6.com/forums/showthread.php?t=502348

E55-E60 is really the sweet spot anyway. We can get pretty much all of the timing on E60. Mine only drops 1 degree from full pump E to E55-60.

Even a bolt-on LT1 car gained 20whp on E46, so it might of made another 5-6whp @ E78. Look up RPM's youtube channel they just tested it.

[avalonandl]

If you try to go over 6lbs boost your issue is the 11-1 CR in the base LT1 engine.

[danhr]

Originally Posted by JSH

Stock pump will handle 850hp, so buy one that will make say 11# boost.

No it wont

Originally Posted by PeteSS2018

Stock fuel system will be fine if youre not wanting to make more than approx 650hp, after which you need more fuel and (as best as I am advised) better pistons. Also, recommended to have a catch can, but not essential. Some say high flow cats for boost, but it seems like its a nice to have, not essential.

Stock fuel system will be fine until 650 hp? uhh no.

Originally Posted by avalonandl

If you try to go over 6lbs boost your issue is the 11-1 CR in the base LT1 engine.

no.


You need an lt4 fuel system (high side pump, low side pump, and injectors) at minimum.

You then need to decide if you want to use e85 or meth to keep things cool. then go from there.

[L78toLT1]

Originally Posted by danhr

No it wont



Stock fuel system will be fine until 650 hp? uhh no.



no.


You need an lt4 fuel system (high side pump, low side pump, and injectors) at minimum.

You then need to decide if you want to use e85 or meth to keep things cool. then go from there.

Concur with Danhr on all three counts

[PeteSS2018]

Originally Posted by L78toLT1

Concur with Danhr on all three counts

Certainly I have no issues, note I am tuned on premium 98. Output is about 560whp.

All the advice I got from a whole range of people (before I supercharged mine) was that stock fuel system was fine for my build, which is mostly stock. I have experienced zero issues and dyno tuning results were pretty clear. So Im curious to understand why you say this?