lt4 swap

[oltorftd]

I got a 94 camaro 3.4l auto and i was thinking about swapping in an lt1 but then i thought it would be cool and unique to swap in an LT4. has any one ever heard of that before? would it be much different than swapping an lt1? how about compared to an LS1 price wise and feasibility wise?

[Merlin]

ive seen some lt4 camaro's. there preety fast. i had a friend that is selling some lt5's if you wanted to get really unique.

[GT Jon]

And how much would one of those LT5's be?

[oltorftd]

no kidding .. the lt4's i saw were >$4000. could you swap in an lt5 as easily as you could an lt4? the reason i ask about the lt4 instead of an ls1 or something is cuz they are similar to the lt1, which was designed to go into a 94 camaro

edit - or, the 94 camaro was designed for an lt1? i dunno. wouldn't it be freakin' cool to have your engine say "grand sport" on it? o man

[Merlin]

And how much would one of those LT5's be?

cough,$15-20,000 brand new in the crate, cough. although he has some that were well used for around three grand.

[oltorftd]

i think i'll stick with an lt4 - that lt5 might be a little too exotic for me. i did find a zr-1 corvette with the lt5 on ebay just now - only 20K. can you still get an lt4 crate engine?

EDIT lookit this - summit racing pn NAL-12534776

[Merlin]

the lt4 thats in our corvette is the exact same as the lt1. id look around before settling on that particular lt4 because your gonna need a lot more than just the engine.

id like to see this thing go down, so holla if you need any help

[PeeFo]

Honestly for the money there is nothing special about the LT4. If you are that dedicated about v8 swapping I would go with a newer LS-based motor such as the 5.3 or 6.0

[oltorftd]

i was looking at lt engines just cuz i had a 94 and that's the engine that went in that year z28. i heard k member modifications had to be made for ls engines, among other things that i can't remember cuz it's late and i'm going to bed

[Bob]

Swapping a LS1 would be retarded difficult. A LT1 would be much easier. A LT4 is just a worked LT1, so putting them in your car would almost exactly the same.

[oltorftd]

^^^ which is why i want to do an lt4. has anyone looked up that pn on summit? it's like $2000, which makes me think that it's NOT a crate engine, being as how the lt1 crate engine was $4k. but, there's no details. :( maybe i'll call them and see.

[Grimm]

maybe i'll call them and see.

That would be your best bet.

[oltorftd]

is there a difference is the bellhousing pattern in corvette LT1's and f body lt1's? how about the engine it self?

[Car-Man-98]

The LT4 kit that you are refering to is a LT4 CONVERSION KIT for a LT1. All that is different on a LT4 is the heads and intake and cam, everthing else is the same.

[oltorftd]

i read a website that listed a few other differences. theyre similar, but it's more than heads and intake and stuff. i don't know how much of them matter performance wise.

http://www.grandsportregistry.com/lt1vslt4.htm

that's the website, anyways.

[Car-Man-98]

Yea their is other stuff too but those are the big things, I think they have the same block and rotating assembly.

[oltorftd]

the lt4 has a higher redline, like 6300. i like the lt4 more just because i like the corvette panels on top.. i think it would be cool to pop your hood and it says "corvette" on it.. that's kinda ricerish.. but.. you know it's cool.

[Car-Man-98]

A lt4 and a lt1 is like a ls6 and a ls1. Basically the same motor but the ls6 has a 6500 rpm redline and the ls1 has a 6000 redline. Put stronger valve springs on the ls1 and it could rev to 6500 also, same goes for the lt1 and lt4.
Those are just covers that go over the fuel rails, they came on lt1 vettes too. But anyway get what ever you want.

[oltorftd]

so, a cross member, k member, and engine cradle are all the same part, right? and i need to get a new one for the ltx swap, correct?

what are the advantages of a tubular k member vs a used one? if it's for a DD should i bother?

[Merlin]

they are the same thing. you will need one for th lt1 because of where the mounts are.

for a dd the regular stamped dteel one will work, but lets be honest.... if you are putting an lt4 in your car its not because you want a dd, you really want something faster than a regular lt1 camaro so just put in the tubular k member. its lighter weight (youll need it with that heavy iron block) and it will work well with your future mods that you will do.

[oltorftd]

that's what i was thinking.

also, what would i need to do to a LT engine to put it in the 400 rwhp range? I want to avoid fi and nitrous and have a reliable engine. I'd say price is a consideration, too, but.. it's hard to be economical AND have lots of power

EDIT - i just found a TB bypass mod on ebay!! 10 extra HP!! holy cow, only 10 bucks!!!111!!!!1!!

[oltorftd]

i was being sarcastic about that TB kit thing.

also, i called summit and they said that pn is the long block for the lt4, i just needs an intake manifold and up. seems like a smokin' deal to me for around $2850.. which is odd for summit racing.

[Tpunk]

If you get a tubular K-member only go with the UMI one. The others are not as strong as the stock one so why would you put them in a car that is going to be driven on the street. Honestly you would get more out of an LT1 if you get PNP heads and a cam than an LT4 and it would be about the same price and be much closer to your 400hp goal. The parts that are different from LT1 to LT4 would need to be modified anyway to get 400hp out of the car anyway so why spend the extra money. The engine covers that say corvette will work on LT4 as well as LT1 just so you know.

[Merlin]

yea the corvette had the lt1 and th lt4 in it.

[FastPacedGTP]

to hit 400whp in an LT1 NA, you'd have to seriously port the heads and intake, 1 3/4 long tubes and a big agressive cam. It's doable, but your overal reliability and gas mileage will be down the tubes.

For all the work involved and the massive amount of these cars made, only if you're doing this for your benifit and you have someone knowledgeable to help, then it's worth it. But man, an LT1 powered car are like a dime a dozen.

[Tpunk]

yeah, I've been looking at getting an LT1 project car and they are down to 3-4k, not bad for what they are.

[CaliforniaBoy5]

So how hard would it be to put an LS7 in our cars??

[FastPacedGTP]

Alot harder than an LS1 swap. The LS7 is a dry sump setup.

[Tpunk]

I thought they could run the LS2 wet sump though? I know some guys have done it. check over on ls1tech, they should know.

[FastPacedGTP]

if you really wanted to. can't see the reasoning why

[Tpunk]

I don't think the dry sump system physically fits in the f-body for some reason, can't remember why though.

[Amagine]

if you wanted a 427 just get an LSX bore to hone block. and build it from there. it's LSx based so it would easily swap into an ls1 car....

[Tpunk]

Hell if you want to go nuts you can get the 454 small block from World. It's a bit pricey though.

[robmick33]

As it is well know"with enough money anything is possible". Personally i would do the ls7(427 alum) swap if i had cash just because of the zl1 camaros insane power off the lot.But also with the lt swap as far as im aware the pcms are not as tunable as the odb2 ones.Theres also something to look at for you 400hp goal is the pcm.In any event good luck on the swap:chug:. im currently blueprinting a turbo setup for my 3.8.

[Grimm]

As it is well know"with enough money anything is possible". Personally i would do the ls7(427 alum) swap if i had cash just because of the zl1 camaros insane power off the lot.But also with the lt swap as far as im aware the pcms are not as tunable as the odb2 ones.Theres also something to look at for you 400hp goal is the pcm.In any event good luck on the swap:chug:. im currently blueprinting a turbo setup for my 3.8.

The ZL1 with the 427 was never a production car, and it never had an LS7.

[1970judge]

Awesome.

[Car-Man-98]

The ZL1 with the 427 was never a production car, and it never had an LS7.

A GMMG ZL1 had a LS6 I believe.

[robmick33]

K i may be wrong on the Ls7 but i know its an aluminum 427 block. there were 69..just checked it was the ls6.it pushed 600hp at the wheels (although have been claimed to put down closer to 700).Each one is different than the next.I believe they went brand new for close to 60k.

[David8399]

Have an LT1, but want an LT4? GM Performance Parts has what you need. These LT1-to-LT4 conversion kits bring the most out of your factory LT1 engine. The kits include LT4 cylinder heads with valves and springs, a red aluminum LT4 intake manifold, GM Performance Parts' hot cam with 1.6:1 ratio Bow Tie roller rockers, and all necessary gaskets. The result of all of these mods is 425+ proven horsepower.
summit racing part no. NAL-GMP3287-2

it is no longer avalible. gm discontiued the intake. but all it is is intake heads and a hot cam kit. and gm performance parts put a ls7 in a 99 camaro, there is a write up on gmpp.com, but it is possible

[Merlin]

OHHHHH NOESSSSS its back from the dead......

[oltorftd]

ya.. i'm just going to get a ls1 z28... it was way too much to do the swap, and my car's trashed anyways. the only good part of it is the engine, which i recently rebuilt (and the tires.... $500 later... GRRRR)

i might swap the 3.4 into an s10, tho. that would be a cool project, with the 3400 top end swap too. then i'd have "the bitch" my camaro, and "the bastard" the truck :)

fun!

[David8399]

i got an lt1 long block i could give you deal on if your interested, and willing to come get it.