build questions?

[justanlt1]

im looking it to building a 11.1 355 with some track 1's with a D1sc 14-16 lbs it will also be running on E85 with 24x. seeing on what recomendations for a fuel system and power level is possible?

[justanlt1]

specs

stock crank
eagle h beam rods
.040 probe flat tops
MLS head gaskets
arp main and head studs
stock out of the box track 1's 68cc chambers
S/R bullet custom grind

built 6speed
8.8 with 3:55's

[Dave357LT1]

Thats alot of comp. For boost.....

[bsgreenz]

To much comp in my opinion, i would drop it more to about 9.5.. 11to1 and 14-16 lbs and a stock cranck just sounds kinda like a bad idea.

[justanlt1]

It may wind up being a little bit less i still have to order head gaskets and im shooting for around 10.5-11.1 cause im not planning to any more boost than that. i think it should make around 600 this way and the crank should hold up to that

[CamaroZGuy]

i am going for 12-14lb boost and i think i am allready pushing it with a 10:1 CR. are you planing on a FMIC? meth injection?

[Ryan Stout]

I'm gonna run 22psi and went 8.5:1 to be on the safe side. No way in hell would I run over 8psi on 10.5:1. Then again, I'm conservative and don't like running on the ragged edge. Just 1 bad tank of gas....

[CamaroZGuy]

i would not want to push over the 10:1 that i will be at. and i will be using a 31x12x4 FMIC and a stage 2 snow performance kit.

[RealQuick]

im looking it to building a 11.1 355 with some track 1's with a D1sc 14-16 lbs it will also be running on E85 with 24x. seeing on what recomendations for a fuel system and power level is possible?

I would say 600hp is pretty easy, even if you dropped the compression to 9.5-10:1. As far as fuel system, twin intanks and 80 # injectors should be enough I would think.

[justanlt1]

more than likely a fmic and a buddy pushed 24lbs on his bone stock 5.3 with head studs and ls9 gaskets on E85 so i dont see the compression being a big issue its not like i plan to run 91 in it any way

[Ryan Stout]

Then why ask if you don't like our answers? You're talking to guys who have 600-900hp cars of their own that have done it already.

LSes are a different breed. 2 completely different engines. And even if it does work, I wouldn't push it very far or expect it to last very long.


Twin intanks and 80s should be good. I'd throw meth at it if you insist on high compression. I like my Devils Own kit a lot.

[CALL911]

more than likely a fmic and a buddy pushed 24lbs on his bone stock 5.3 with head studs and ls9 gaskets on E85 so i dont see the compression being a big issue its not like i plan to run 91 in it any way

Uhh.... just because someone did it, does not mean it will last, or that he won't be looking for a rebuild before his next oil change. LSX or LTX, it doesn't matter; if you push that kind of boost through a stock motor (with high CR) it will not last, unless you simply keep it out of boost all together.

I am running 8.8:1 CR in my setup and running safe with 15#'s of boost (and I am also running meth and a large FMIC). I am not saying thats the CR you should look for as I could safely run 24+#'s of boost with that. But I would also reccomend dropping the CR to around 9.5:1 if you are aiming for around 15-ish #'s of boost and you want things to hold together. ESPECIALLY if you are planning on using the stock crank.

I would also HIGHLY reccomend going with a good meth injection setup. It will probably be more benefitial than an FMIC (although I would do both). If you are only going to do one, go with the meth injection over the FMIC. It also will probably net you a couple more #'s of boost that would be otherwise robbed from the FMIC.

Devils own makes a decent kit. Alky-control is top notch (although I never saw eye to eye with Julio the owner). I have and love my Snow Performance meth injection kit.

[justanlt1]

maybe i should have worded it different,how many of you are running e85? Im not ignoreing what you guys are saying im just looking at it this way if a stock motor can take 6is psi why cant one with forged pistons and H beam rods take 14is im not set in stone on the psi im more looking to a hp goal and thats what i think will get it there. i understand lsx and ltx are two different animals hence why im not using stock heads. i just hate doing the same thing as everyone else thats the whole reason i kept my car a lt, cause its different

[Ryan Stout]

I hear ya about being different. Everyone here told me an LT will never be fast, now look. I pretty well built my car to prove a point, and hearing "that's still an LT1?!" is priceless every time.


On E85 it may be possible. I'd stay at 10psi, get some studs, heads with a thick deck (trickflows are a good choice) and a head gasket. I used a felpro 1074. They're good, but I'm hoping it'll pop before my bottom end, kind of acting like a fuse. You might look into an air to water intercooler. Limit it to 10psi, but toss some ice in the tank and feed it 40* or less IATs. I'm not sure about A2Ws but it sounds good!

[Ryan Stout]

I should correct myself, by "here" I mean the locals around here. They're all LS bandwagonners trying to catch a "dinosaur" as it's called sometimes.

[CALL911]

My thoughts on E85.

I don't use it, and I don't like it. Here's why;

It is corrosive, so plan on having to replace your fuel system with E85 friendly lines and fittings ($). Also, E85 comes in different blends from the pump, so if you are tuned (ESPECIALLY for your car running a little on the pushing the envelope edge) on whatever blend is in your tank, then you go to fill the tank again, it will eventually be a different blend of E85, and you will need to adjust your tune accordingly. Now, they do make gauges that go in your tank that will tell you what blend of E85 is in the tank to help, but again, its gonna cost you the gauge, and a lot of face time with your tuner, or you spending the big $ on tuning software, and the knowledge of how to change it yourself. Also, know that besides all this extra cost, you won't be saving money by buying E85 over premium. E85 will net you MUCH worse fuel economy, and in the end, it usually ends up cheaper to actually buy premium.

Thats why I am not a fan. Again, meth injection is much more effective, and cheap. How cheap is it you ask? I spent $12 on 5 gallons of meth 3 years ago. I mix mine with water 50:50, so that gave me 10 gallons total. Granted setups vary nozzle size to nozzle size, and how much you drive and beat on your car (which I do a bit of). But I still have about 1.5 gallons left of my water meth mix that I spent $12 on years ago. :D

[Ponyhntr]

Ian, I think you should be fine, especially running E85. With all the cars around here that run on it, and the tuning knowledge here in KC from guys that run it all the time you should be just fine.

If you're looking for 600rwhp, I think you'll easily get there with 10-12 psi of boost with 10.5-11:1 on E85.