LS1 NIGHTMARE

Good morning, i have a 94 camaro ls1 issue. I'm a seasoned gm tech., and had a guy approach me with a box of go fast parts and asked if i'd install them. Being a motor head i said yes and dug in. He brought me a new performance cam, lifters, timing chain and gears, intake, throttle body, injectors, cap & rotor, plugs and wires. Since the installation the engine pings on moderate throttle pretty bad. Knock sensor counts climb, timing changes 20 degrees, still pings terrible. The cam he provided was for an 05' which has a differant distr. Drive dowel as opposed to the 94 distr. Being driven by the center of the cam sprocket (all the parts he supplied were for an 05', the timing chain and gear set was wrong, i found out after in installed them, i put a new set in for a 94'). I suspect the cam for the 05' cannot and will not work properly in this 94' engine due to a differance in timing....can anyone verify this??

RPM WS6

iTrader: (3)

Sounds like you're talking about an LT1, and probably mean '94 and '95 (vs. '94 and '05 posted above.) There is no distributor at all on an LS1 engine, nor do any parts interchange between a '94 LT1 and an '05 "LS" style engine.

So, I'm moving this to the LT1 section....

ahritchie

iTrader: (1)

Early LS1....lol...good one! You need more details of the actual year of the engine and what cam he bought...part numbers or pics would be helpful.

MonmouthCtyLS7

iTrader: (6)

LS swap?

SS RRR

iTrader: (2)

It will not work unless changing over to a vented optispark.



http://www.crankshaftcoalition.com/w...vy_LT1_engines

azmarkus

Troof.

sweetbmxrider

iTrader: (13)

Things can only get better from here!

94FBIRD

iTrader: (5)

GM tech. HA HA!

SS RRR

iTrader: (2)

Because a "seasoned" claim has been made the OP is supposed to know the nuances of an old and irrelevant platform? I guarantee you, wherever you are to take a LT1 you'll have mechanics either try and buy their way out of working on it, do whatever it is wrong, or have their nose in books and the internet for reference no matter their experience.

... or they just have someone else work on it when they are not capable...

trilkb

iTrader: (4)

the parts were for an 05 what? Camaro?


How about you give us the cam specs? Brand? Part number?

Was the car tuned at all? Depending on the cam you could maybe expect your issues if you throw a larger cam in with no tune and fire it up?

96capricemgr

iTrader: (1)

I never pid that much attention to the "unvented" opti setups since they didn't apply to the b-body.

That said I would think so long as the opti drive stud can't slip too far back into the cam the cam would be OK?????

To me the talking about a cam and injectors without a tune means this thing could be eating itself alive. The pcm can't accommodate for much injector size change on it's own, then combine an assumed over fueling of at least 25% with the different fuel and spark needs of an aftermarket cam and the result is exactly as should be expected.

Far as the "seasoned tech" part, at a dealer you have parts swappers and maybe 1:100 actually understands things at the level of an enthusiast. I have known some VERY good dealer techs who understand surprisingly little about how it all actually works.

hrcslam

No, they should know it's not an LS1.....

And, they should give enough relevant information for us to actually help.

SS RRR

iTrader: (2)

They should? Why? Does it make you mad that LT1 wasn't typed? Get over yourself already. There were pertinent questions asked between the different cams to know some homework as been done. Who are you to judge anyway?

hrcslam

Has nothing to do with the LT1 not being named. It has to do with "seasoned GM tech" not knowing the difference between an LT1 and LS1. That alone makes this hard to take seriously.

The rest of the post gives little detail to actually provide any helpful information. It's very garbled and makes us make many assumptions as to what he was trying to say.

None of this has anything to do with me getting over my self. Maybe that's a problem you have, as I certainly don't.

SS RRR

iTrader: (2)

Funny how you get hung up on a term. Who cares if the dude is seasoned or not. I had no issue with anything asked. If you get over yourself perhaps you can see dude is just asking simple questions and has never messed around with LT1's or LS1's. Let's crucify him because he doesn't know the engine, maaaaaaaaaaaaaan!
Why don't you spend some time helping this guy out instead of bitching? I mean I don't see a real big difference between his questions and your lack of ability of keeping a splined sleeve from stripping, so there's always that.

hrcslam

First off, I never said anything to or about the OP. Just answering the question that was asked. As in, I understand why their responses are what they are. Not that I agree or disagree.

Secondly, I never personally attacked you yet here you are yet again attacking me (I didn't attack anyone here in this thread, actually).

Third, I'd love to help. But advice given based on assumptions (that I made too) from the OP's post is already what I would have said (from you and 96capricemgr). No need to repeat. It's a wait for the OP to respond time, and hope the assumptions were correct and go from there.

SS RRR

iTrader: (2)

Perhaps one day you'll come to the realization that these engines are old and hardly no one who is a mechanic for a living works on them anymore. There is a GM certified shop near my house I take my cars to who treat me right and they know jack about either platform. The f-body brodum is a heartbeat away from flatline, dear boy.

hrcslam

That I do know.

But most, if not all, GM techs (especially the seasoned ones) I know can glance at an LT1 and knows it's not an LS1. That is very very very easy to do.

Not understanding the quirks of an LTx is one thing. Not knowing an LTx from an LSx is another.

It's like not knowing an Iron Duke from an Ecotec, there's a pretty big difference between the two just by looking at them. It's not even close. That's a rookie mistake from a "seasoned GM tech".

SS RRR

iTrader: (2)

I keep forgetting the one who argues himself in circles is the one who should deem who is and is not worthy of being a seasoned GM tech. My apologies.
Times are changing. If or when you get past your f-body bro phase you may eventually understand.

hrcslam

My bad, I didn't realized the ecotec came in an f-body.......