DSteck

A stock LS2 injector is 48mm o-ring to o-ring. LS3/LS7 is 34mm.

The HoB system is all inclusive... lines, rails, the pump assembly, everything. It is a TOTAL overhaul, and the only part you need are injectors.

ID injectors come with o-rings. No swapping required.

I'll be there, but I'm working with a 427. That's not cheating if it's stock displacement.

dmaxcamss

5 Liter Eater, oh wow, I didn't realize breaking the 700 rwhp mark was hard without meth. I figured having a larger motor would help aid this goal. How would this be hard on my motor?

DSteck, in your previous message, you stated that the ID850s are a direct swap for the LS3/LS7, which wouldn't be a direct swap for my vehicle. That's why I was saying all I needed to do was swap the o-rings and possibly space the rail. I don't doubt that the HOB is a nice system and all inclusive, it's just that I don't have $2000+ to spend right now on a system. By the way, I'm only 10 or 11 cubes away from you.

BADZ

You are correct. Originally my car peaked at 5600rpm and dropped off at that point with the twin walbro setup so it didn't see higher rpms as the blower was out of air "or" out of fuel at the time and couldn't carry it. Eitherway, it was a "cheap" way to do it at the time. Now I know its not good to go cheap on the fuel side of things if you want big power.

Now running the YSI, the twins w/o the return line was not keeping up to 7k which reduced my fp and the injector duty was at max.

I know your in a different situation (700-750) and with the twins, you should be ok. I on the otherhand was not.

DSteck

Right, but ID1000s would be a direct swap. The ID850s would require the rail to sit lower, but the ID1000s would be a direct swap. You don't have to swap o-rings with any of them though.

dmaxcamss

BADZ, thanks for the info and you're spot on, we are looking for 2 different power levels.

DSteck, ok I'm confused. Lol Let me make sure I get this correct:

LS2 = 48mm o-rings
LS3/LS7 = 34mm o-rings
ID1000 = 48mm o-rings (LS2 direct swap)
ID850 = 34mm o-rings (LS3/LS7 direct swap)

But I don't need to swap the o-rings with any of them? How is that so unless ID will sell you the injectors with the proper o-rings with them. Most injector companies don't give you o-ring options.

I didn't want to overkill on my injectors, which is why I was thinking the ID850s, but with the correct o-rings. So you're stating that the ID850s are shorter than the LS2 length and will required the rail to move lower? Longer injectors is ok, you simply just add a spacer, but lowering the rail is a different story.

FactoryRaceCar

The shorties are direct swap for LS2 rails. No need to alter anything. Yes, they do come with the O rings.

ZO6er

Yes, now I'm assuming you have an ls7? That number was with pump gas and meth was of coarse used for "IATs". It. was never maxed out. Not for more power,never was tuned for it.

ZO6er

My current setup I made 920+- WITHOUT meth, pumpgas

5 Liter Eater

Yea yea Hector...I guess the extra cubes help out a lot. I am speaking from LS2 cube experience so it's probably out of turn. But do you ever run it on the street without meth and/or racecar gas? I'm not saying it's not possible on pump gas without meth but I would have to ask why try?

PS: OP said "on a budget" so built to the hilt 427's with twin 76 turbos doesn't count.

user_name

Turbos are more efficient so they can make more power on pump. cubes help in the same way.

If the OP has 9:1 compression or something I think he will easily make 700+ w/o meth.

I'd do twin walbros and 83+ injectors for this setup. That is roughly $1k and you are set I believe.

Drewstein

/Agree

That's a great setup for no too much. It's also quality and won't jeopardize the setup.

golfinz

Also, make sure you are using a ton of meth. Meth is a fuel source remember

Corvette-Chris

Anyone have a generally idea of how much power dual walbros + lots of meth + 80# injectors (~93# @ 4bar) in a return style system will support? It happens to be a TT car

DSteck

You're on the right track. The price difference between ID850s and ID1000s is negligible, and the tune has to be scaled either way, so may as well just go with the ID1000s. Injector Dynamics gives you the o-rings with the injectors... Here's what they look like in a package:



That's an ID850, but you get the idea.

The "shorties" are 34mm, and if the OP is using a 48m injector, then they won't be a direct swap unless he can fit the rail lower without issue.

dmaxcamss

FactoryRaceCar, what I was saying is that injectors do come with o-rings, but most companies don't offer a selection/choice of o-rings. My question was, does ID offer a choice? For instance, could I order the 850s with the 48mm o-rings? But if the 850s are shorter, then I'm not gonna go through the trouble of lowering the rail. It's easy to raise it, but a bit more involved lowering it.

ZO6er, I'm running a D1SC and a 416 ci stroker. I didn't realize you were turboed until 5 Liter Eater pointed it out.

5 Liter Eater, I was thinking for sure that the extra displacement would help out. I believe the stock LS2 is somewhere in the 364 neighborhood and now I'm running a 416.

user_name, I'm running 9.7ish with a 416 displacement. I'm guessing you're referring to twin 255s? Would a single Aeromotive 340 support less, more, or about the same? What 83 lb. injectors are you referring to?

golfinz, meth won't be used at this time, I don't have the funds for it.

DSteck, what is the price difference between the 2 and how much do the ID1000s go for?

DSteck

You are confusing spacers with o-rings. You can order ID850s with a spacer to make them the same length as a stock LS2 injector, but the spacers aren't cheap. ID850s without spacers are $880, and a set of ID1000s is $920. If you buy spacers, you'll end up spending another $60-80. There is NO trade-off by going to the 1000.

user_name

Siemens 83#. I got mine from Hinson Supercars. Yes, twin walbros. Not sure on the 340, but the specs should be published. Just takes some math.

I think 700rwhp on pump shouldn't be a problem. Hard to say how much more. Guess you will find out.

BADZ

I know you say that you don't have the funds for meth. I have a snow kit that just came off my car if your interested. Its used but not that much at all.

golfinz

Just get a boost a pump and keep the boost down till you can afford something more.

My vote is a boost a pump and an alkycontrol meth kit...combined they will run you under $800 and should support around 600rwhp. Getting the meth kit now will be useful later down the road.

FactoryRaceCar

Another option is to use the Z06 fuel pump with better injectors and meth along with your BAP. I would recommend Racetronix harness though. It will get you over 700rwhp. Since you do your own work, labor cost won't be anything and you will still be under 1k.