WicketMike

iTrader: (13)

Does anybody know what else I would need to put a LS3 into my 1998 ?
Should i also change the PCM ?

ss.slp.ls1

iTrader: (36)

You can use your stock LS1 harness and PCM. You have to do one of two things:

1) Pull the crank reluctor and swap it for a 24x tooth reluctor wheel and install a 1x cam sprocket.

2) Ensure that you have a 4x cam sprocket and pick yourself up a 58x to 24x converter module.

-You will also need to drill and tap the block to accept LS1 knock sensors and extend the knock sensor connectors down to each side of the block.

-You will need to extend the cam sensor connector up to the front of the engine. On a '98 harness you should have an exposed 3 prong connector near the EGR pigtail. That is the cam sensor interrim connection. You can extend it from there, makes it easier.

-One last thing PCM wise, you can plug up the LS3 MAP sensor port on the side of the intake and then twist open the vacuum port on the back of the manifold and connect your LS1 MAP sensor to their using a length of vacuum hose.

After a tune the LS3 will, if all goes well, run perfect in your '98.

RGSS

iTrader: (2)

This post pretty mch summarizes what I was looking for.
I still have another question:
PCM and engine management wise, does the same apply to an LS7 swap? I am using a 2002 Camaro harness and PCM. Is there any diffeence in the coils?
Thanks for any advise.

ss.slp.ls1

iTrader: (36)

I assume it does, you basically need to use LS1 sensors and LS1 reluctors to use the LS1 PCM (1x cam reluctor, 24x crank reluctor, LS1 MAP, LS1 knock sensors, etc). The thing you will have to check is if the LS2/3/7 (or whatever coil packs you intend to use) coil pack connector connects to the LS1 engine harness pigtail. If it does not, then I don't see why You couldn't cut the connector off the coil pack harness and solder and heat shrink the LS1 coil pack harness pigtail in place so that it will plug into the engine harness. Look up diagrams before you cut anything though.

1961ba427

iTrader: (26)

Where do you get the module mentioned above? Sorry for a newb question...I pretty much only haunt the LT1 section, but I do have an 06 LS2 sitting in a crate complete less intake/TB and a pair of L92 heads on the shelf. Intended to go carb'd in something older, but this thread caught my eye.

RGSS

iTrader: (2)

There you go
http://www.lingenfelter.com/mm5/merc...Category_Code=

The link was posted a few pages before this one.

1961ba427

iTrader: (26)

At first thought....I was all excited about that little box. Sounds like a good alternative to pulling down an engine, locating, and swapping parts.....then I thought about what if it goes out and I'm out on the road somewhere? Or if it's discontinued/obsolete? (Can anyone say Delteq "brain"?) I guess I'd be much safer to break the engine down and swap parts so that it stays serviceable, huh?

ricks02z

iTrader: (5)

Does the racetronics ls1-ksrh knock sensors adapter harness for 29.00 come with 2 harness for both sensors are do you order 2? Thanks Rick.

TransWS6Am

iTrader: (41)

it has both, only need to order 1.

ricks02z

iTrader: (5)

Thanks. Rick

ricks02z

iTrader: (5)

Does any vendors have Racetronics part#ls1-ksrk in stock? Or a contact # for Racetronics? Thanks Rick.

urock NO IROC88

iTrader: (4)

Ok I'm going to be purchasing a LS376/480 here in the next few days and what I have gathered here for a swap into my 2001 Trans Am is that I will need...
58x to 24x conversion box $250
Katech MAP adaptor $30
New LS1 highflow waterpump $125 (not necessary but recommended?)
new motor mounts $50
Oil pan gasket and pickup tube o-ring $40
FAST 90mm throttle body $250 used
LS2/LS7 Injector Connector Kit (part No. 8L480080000, $26
Knock sensor extension No. 1RX-LS2-KSRH, $25

and/or what about this?
https://store.gmperformanceparts.com...-19201327--%3E

comes with all of this...
• 19201790 Engine Controler
• 19166573 Engine Harness
• 15865791 Mass Air Flow Meter
• 19166574 Mass Air Flow Meter Mounting Boss
• 10367117 Accelerator Pedal Assembly
• 12581966 Oxygen Sensor (Qty 2 Per Kit)
• 15156588 Oxygen Sensor Mounting Boss (Qty 2 Per Kit)
• 19171935 Instruction Sheet

TransWS6Am

iTrader: (41)

No need for the map adapter, just a map extension, you also need the cam sensor extension, it wasnt on your list.
As far as the converter box goes id do your homework on it, the have failed a few times and then your stuck on the side of the road. Might want to look into getting the 24X reluctor wheel installed in the crank, i would if i were you.

1961ba427

iTrader: (26)

x2 on that....plus what if it doesn't fail for a few years, and by then none are available anywhere?

urock NO IROC88

iTrader: (4)

well that's why I am looking into that GM LS376/480 controller kit. Comes with ECU, harness, etc. Only downside is drive by wire pedal... but then I wouldn't need to get the car tuned for the new engine. It's $10 this way, $10 that way kind of thing, I'm looking at what is the least amount of headache and what will make the car run fine for however long!

TransWS6Am

iTrader: (41)

your probably looking at a big head ache getting your stock gauges to work with that controller.

urock NO IROC88

iTrader: (4)

have autometers setup already haha

TransWS6Am

iTrader: (41)

Nice! go for the controller kit than, i would!

HioSSilver

iTrader: (8)

x2....I just scored a ls7....to replace my ls6

TransWS6Am

iTrader: (41)

LS7 wont work, ill buy it from you though, hows $200 sound?
lol. I kid. I believe the lS7 is going to be nearly the same as the LS3, but your going to need to do something about the crank, unless you plan to run the dry sump in your WS6.