SSh

Does anyone know a way to definitively determine the year of an LS1 and whether a particular intake is an LS6 intake?

Thanks,
Scott

DaleMX

iTrader: (4)

Have both in my basement. LS1 has 12560688 on it, and the LS6 has 12561184. May be others. The LS6 has a flat bottom (when viewed from the bottom) and the LS1 has a curved bottom.

SSh

I have 12561184, so I suppose I was told the truth. I am doing a swap form the LT1 in my Impala SS to what was claimed to be a 2001 LS1/T56 with 6k miles. Looking at the engine I have no doubt that it is practically new. The paint is not even worn off were the pulleys run and there is not a spec of oil or corrosion anywhere. It does not look like it could have been pressure washed because the paper bar code labels look brand new. I had no reason to doubt, I just wanted to make sure before I invested any more time or money on this setup.

Thanks for the info.

67ls1CamaroProject

If it was claimed to be an LS1/T56 then why does it have the LS6 manifold? I thought that the LS6's only came in the vette and hence your combo would have a torque tube between the motor and trans.

Domeskilla

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 67ls1CamaroProject:
<strong> If it was claimed to be an LS1/T56 then why does it have the LS6 manifold? I thought that the LS6's only came in the vette and hence your combo would have a torque tube between the motor and trans. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">From what i'm told the 01/02 ls-1's have the ls-6 IM on them. Or am i wrong? (im new the ls-1 engines)

Speartech

iTrader: (14)

That's correct! For 2001 and up, they all come with the LS6 intake and have no EGR valve.

SSh

Thanks for the input and questions. Speartech responded with the answer 67ls1CamaroProject was looking for. This was also my understanding. The confirmatino of the LS6 intake also tells me this is a 2001 or newer LS1 as well.

Any other interesting bit of information Speartech (like the no EGR)?

Thanks again,
Scott

Speartech

iTrader: (14)

Not much else in tidbits. Just watch for scammers if buying an intake on the internet. People will try to pass off anything to get your money.

Pre-2001 Corvette intakes also don't have EGR but are just regular LS1 manifolds. The give away on these is that they don't have the brass threaded inserts for the throttle cable bracket mounting bolts (since Vettes are electronic throttle).

The other scam to watch for are the Holden intakes. They also don't have EGR, but do have the threaded inserts! On these you have to look at the bottom for the LS6 shape difference, or always go by the numbers on the intake.

2001 LS6 casting number: 12561184

2002 LS6 casting number: 12573572

John

bgreen

FWIW, the LS1 we bought for our Cobra project was sold as a 2001, but when received, had an EGR with the regular LS1 intake.

We emailed seller, asking, and they confirmed it was a 2001. Still wondering, we checked the VIN, and it showed a 2001.

So, we came to the conclusion it was an *early* 2001 LS1 that didn't yet have the LS6 intake.

Just something else to keep in mind.

SSh

Thanks again for all the input. It is definitely a 2001 engine and LS6 intake according to the part numbers.

bgreen,

What cobra kit/chassis are you using? My project started as an investigation into building a cobra, but the lack of time (to much work, wife & 2 kids) and lack of budget ($35k+) left me with modifying my Impala SS for now.

SSh

Hello John,

I spoke with Zac at Speartech a while back. I am considering employing your experience with building an LS1/T56 emissions compliant engine harness that would allow me to retain all of the current functionality and provide the interface to my 96’ LT1/Impala SS electrical system. I want the PCM in the stock Impala SS front driver side position. I was wondering if you could detail what you generally do what it includes and what it would cost. I have the complete LT1 and LS1 harness, but I figured that I might be able to sell them for more that I would save butchering one or both to do this my self.

I would PM you, but don’t have your email address.

Thanks,
Scott

bgreen

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SSh:
<strong> Thanks again for all the input. It is definitely a 2001 engine and LS6 intake according to the part numbers.

bgreen,

What cobra kit/chassis are you using? My project started as an investigation into building a cobra, but the lack of time (to much work, wife & 2 kids) and lack of budget ($35k+) left me with modifying my Impala SS for now. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">B & B Roadsters - I had more information up on a webpage, but it's down right now.