i have decided recently that a LR4 (4.8) will not suit the power i have intended for my camaro, so i'm back at this board! i like the idea of having an aluminum engine, but which will make more power with less modifications? i'm hoping to go the ls2 route, but ls2's are also DBW so i'm not sure about that, is there anyway i can convert it from DBW to DBC???

 

yes...go with a 411 computer with red/blue connections and get an ls6/ls1 intake with the proper throttle body. you can probably do it with the ls2 intake as well with some different connectors. lq9 will be cheaper and give you more room to build.

 

this project will really kick off around the end of January, but i will be gathering up parts and accessories in the mean time and doing some research. will post pics of the vehicle later on. it's a beater and needs alot of work, but again, not bad for the price

 

bottom ends are pretty comperable, sensor locations will differ and different reluctor wheels on the crank (depending on year) IIRC.

DBC conversion shouldn't be an issue with the right pcm; not all DBW pcms have the drivers for the IAC. i'm using a pcm out of a 00 silverado for my LQ9/L92 mutt. Throttle cable adapter bracket on the LS3 intake and a 90mm edelbrock TB

 

LQ9 and LS2s are 364 c.u. The LS2 weight less but the LQ9 has better heads so you can make more power with the stock heads. The truck LQ9s and LQ4s are bless with heads that are the same as the LS6 heads except that the truck heads have bigger combustion chambers, (lower compression). LQ9 heads flow about 40 cfm more than the LS2 heads and when ported and bigger valve intalled they can flow around 300 cfm. If weight is not a problem I would use the LQ4, LQ9 motors they can make a lot of power and they are cheaper than the LS2.

 

how about getting a ls2, with lq9 heads? i really want to shave of as much weight as i possibly can

 

You're only looking at a weight saving of around 150lbs I believe. To me, that's not worth paying more up front for the block as opposed to the iron block, and you have a lot more room for upgrades with the iron version. You can't bore out the aluminum blocks like you can with iron. Why do you think people with GTO's and Corvettes ditch the LS2 for an iron block when theyre building a 4xx ci motor.

The money you'll save buying the cheaper block will allow you to put that one extra mod towards the motor and will equalize the performance had you gone with a lighter weight block.

 

What sort've budget do you have planned for the swap? In your other thread, you stated a few times that you were unable to complete the swap due to inadequate funding.

 

How so are 317 heads "better" than a 243 head off a ls2 or a ls6 because they have the exact same runner volume. and for a n/a engine the 65 cc chamber would be ideal for more compression, a boosted 6.0 would benefit from a 317 head because of the larger combustion chamber.
again not to start a riot but this kid is in high school and changes his mind every week. BUT he has good intentions. I mean who wants to put a 6.0 in a third gen camaro with a full spohn suspension, a fast intake, and other features MY build has... But im not one to judge.

 

Ok, an LS2 with LQ4/LQ9 heads will work great. These heads are casting number 317. You want to only get the casting number 317, other truck heads from the 5.3L and 4.7L engines are as bad the LS1/LS2 heads. To keep the cost down just get set of forged pistons and rods, the factory cast crank can take over 700hp. I'm going to do the same for my 88 IROC. I already have two T4 turbos, two 40mm HKS waste gates, Greddy Type R BOV, ethanol injection, HKS 4"x12"x24" intercooler and a Blitz electronic boost controller.

 

The LS1/LS2 heads are not the same as the LS6 heads. LS1/LS2 heads flow about 220/225 cfm. The LQ4/LQ9 head is the same casting as the LS6 with the exception of the larger combustion chambers. The LS6 and LQ4/9 heads flow 260 cfm right out of the box. With some minor port clean up and a good 3 angle valve job they can flow even more.

 

The ls6 came with hollow stem and soldium filled valves from 02-04 in the 243 heads, EVERY ls2 came with 243 heads with standard valves the same size as the hollow stem and sodium valves. Only difference between ls6 heads and ls2 heads is one has hollow stem intake valves/sodium filled exhaust valves and one has regular valves. 241(ls1) heads and ls2(243) heads are WAY different.

 

way different you just stated the difference yourself.. valves and springs that's it.. not worth the retarded price difference unless your building an ls6 clone and plan to use the stock rate springs.

 

ls1 heads are 241 heads, ls6 and ls2 heads are 243. i was stating the last part because tonyz383 was comparing ls1 and ls2 heads together when he should be comparing ls6 and ls2 heads together.

241-stock 01-02 ls1 heads
243-stock ls6/ls2 heads
317-stock on 6.0 truck engines
862/706-stock 4.8/5.3 heads
806-stock 97/98 ls1 heads
853-stock 99-00 ls1 heads

 

i'm no longer in high school, i dropped out about a month ago FYI, and unlike your swap, you keep saying your going with the whipple charger, i'm keepin N/A power, and unlike your car, mine is an RS. my car will in no way be anything like yours when i'm done... right now it's just a stock ls2

 

ill just leave this thread. but id kindly ask you to quit commenting on my threads saying kind words about my car and then turning around and saying it looks like spit. and yes i didn't accept your friend request on facebook last week....

 

anyway back to the topic, LS2 vs. LQ9. did some research, and LS2's are rated at 400BHP, and LQ9's are rated 300. anyone with dyno numbers of an LQ9, 317's, and a 102mm intake?

 

An LQ9 equipped with the same intake manifold and heads as an LS2 will put out the same numbers. It's the same block just iron. The truck blocks had intakes geared towards off the line torque not horsepower.





After reading your last comment about school, I'm going to sugges not doing anything to it until you finish high school. Really, you dropped out of high school and you're worried about an engine swap? Your compass is completely jacked up. You need to focus on more important things right now. I really don't care that I'm sounding like a douche right now, it had to be said.

 

what you mean by "compass"?

 

I mean really, your interests shown on your user profile says "mechanicing". Finishing school would serve you well.

 

Your compass... I don't really know how to explain the analogy other than pointing out that it makes my point ever the more valid.

 

don't u have an LQ9 in your iroc?

 

I don't own an IROC.

 

do you have any dyno numbers?

 

300hp 315 ft/lbs, thing is crazy fast.

 

Get back in school and dont worry about your camaro until atleast HS is done

 

Hey hey! Not fair, I dropped out of hs JUST to do my lsx swap . Jk
I at least waited til summer break to even start. And I also do agree with pocket and bluez.
Get school done then worry about a big car project

 

To me the decision you need to make is saying, "Do you want fries with that?", or "Thank you for congratulating me for graduating high school!"

To expound on the "compass" comment, he means that your priorities are out of whack. I know some very successful people in this world, that did not go to college, but they at least finished high school. Their main decision after that was not, but an LS2 or LQ9. Good luck in life if this is the path you are taking.

 

1fstbrd...please use this board as a resource and not a place to garner attention.

to do the swap with the parts you are talking about, you need to put together about $6-8000 depending on the transmission.

 

that's what i inteded on doing until 1nasty86 rattled my can, i keep trying to get back to the topic. i plan on swapping a ls2 t56, into a firebird if i can ever find one in my area, don't plan on doing anything with the camaro until i get a DD, engine will be bare bones stock while i do work with the camaro, but anyways, with an ls2 maxed out with modifications, N/A power, how much power am i looking at putting down?

 

Max, like 325hp at the wheels. Thing will be wicked fast.

 

 

You might be able to turbo it and squeeze out 375 at the wheels.

 

make sure it a precision "big kahuna" t67 with a .81 a/r on the exhaust side

 

I've even seen someone on YouTube use a leaf blower as a homemade supercharger kit, you could give that a try. Seemed to work for them but I'm pretty sure the person that designed it didn't finish high school. Just sayin'.

 

OR you could build a rhs 4.185 bore 4.185 stroke with callies forged internals and wiesco pistons, o-ringed mast 405cfm ls7 port heads and a 8.1 liter kennie bell! with 1 5/8 headers for increased down low torque! and a t-rex camshaft for the sound!

 

Skip the leaf blower and go right for that aftermarket boost. WAY CHEAPER.
http://kalecoauto.com/index.php?main...products_id=39
1bar boost is only $159 Stack em up and go 4bar. that 58 pounds of boost for a meager $636 bucks.

Its gonna be so fast your gonna need the cross drilled brake rotors / lines / etc. to stop on the street or track.

http://kalecoauto.com/index.php?main...&products_id=1

 

man! ima have to buy these when i get paid soon! if only they made a cross drilled resivor for the fluid to spin faster down the neck and into the line

 

Agreed.

 

i've heard of people putting hair driers in the C/A/I and hookin it up to a toggle switch, but never heard of a leaf blower motor.

 

Leaf blowers are like the F1 Procharger and a hair dryer is like a D1.

 

leaf blower-106mm quad ball bearing turbo
hair dryer- chinese made junk

make sure you use psi rated couplers! so when a certain amount of boost is reached all the couplers expand and reveal small air pockets so the excess psi can escape

 

nasty, do you have any more information on the t rex cam?

 

242/248 .608/.612 and make sure you get it on a 103 lsa! and retard the cam 7 degrees so boost will hit harder

 

i'm thinking more along the lines of a MS3 cam

 

you could pm texas speed and get there MS9.2 they run in there race car.

 

do they have any vids?

 

naw texas speed likes to keep to themselves. no vids of the MS9.2

 

I heard the new MS5 is a 110hp upgrade on a stock motor, and it's great with blowers. Might wanna check it out. The make it on a 103 LSA.

 

can you stroke an ls2?