Im going to purchase an eibach pro kit with inn the next couple of days, but I have been doing some research and I have noticed that there are a couple of LS1 with LT1 springs(eibach) whats the reason.

 

maybe they were trying to find a used set, and they only found lt1 prokits? I dont see any other reason.

 

I beleive they are the same thing........some companys have the same part numbers and others have diffrent #'s

 

They are not the same springs. There are other reasons than buying used. I've put LT1 springs on LS1 cars from time to time when it's appropriate. The drop height is different, the spring rate is really different.

 

ya, i know that the drop height is different, the lt1 eibachs lower lt1's more then ls1 eibachs lower ls1's. but you also have to keep in mind that if you use the lt1 springs on an ls1, that the front will probably be slightly higher bc of the engine weight difference.

 

There are two things wrong-- LT1 springs are less drop than LS1 springs are. And the other statement that's incorrect is the weight of the car.

I weighed a friend's '95 M6 and my '01 M6 at an SCCA event a few years ago. Same scales, one after the other. Both cars in F-stock trim (a class where little can change). We had the same shocks, springs, bars, wheels, tires. I have a Monsoon, hardtop and power seat. Their car has a Bose, T's and a power seat. The cars were 6 pounds different..... and both were full of gas.

Assumptions are the enemy with suspension decisions. You can't assume things like that. Many assume the LS1 as a complete car is lighter, and it's not.

 

I'm not "assuming" anything.
PROKIT
http://eibach.drivewire.com/chevroletcamaroprokit.html

lt1's. 1.3indrop
ls1's 1.2 in drop.

SPORTLINES
http://eibach.drivewire.com/chevrole...rtlinekit.html
lt1's.Front w/1.8 in. Drop; Rear w/1.8 in. Drop;
ls1's.Front w/1.6 in. Drop; Rear w/1.4 in. Drop;


Also I have read many places about the LT1 engine weighing more then the LS1's(maybe not by much, but enough to effect the springs).

 

Yes, you are..... You are assuming those numbers are correct. And fwiw, lowering numbers are approximate not exact. And it's well known that LS1 springs lower the car more than they are "listed".

Further the springs hold up the whole car, not just the engine. And I've already told yoy the cars don't weight different with similar equipment.

Sorry.

 

This is interesting.

There is a reported near 100lb difference in engine weight (block and intake mostly) ... the LS1 being a lighter package than the LT1. This is not from personally weighing anything, rather "tribal knowledge" that has been passed down from many who have reported weighing the 2 packages.

What in the 98+ cars would make up that difference? Or is the weight differences between the 2 engines just urban legend.

The reason I ask is that some sanctioning bodies are trying to figure a way to bring in LS1 equipped cars and make them competitive with LT1 equipped cars. The differences in nose weight due to the engines was cited as a huge hurdle.

If your data is accurate, it might not be an issue.

 

It's not assuming anything if I provide links for reasons why I believe what I believe. ALL websites that I have seen with the eibach springs have provided that same exact info.

and true, springs hold up the entire car. But I think its obvious that if an engine weighs more. Then The FRONT would be lower, not the entire car, but the front.

I would be assuming all of this, If I had nothing that I was going by. But obviously I'm going by what I've been told and seen.

 

by the way. To my knowledge, the LS1 tanks are slightly larger.

 

Do you know why heresay is not admissible in court? You can't count on it. People can (and often do) tell you anything, and all of them can also tell you they are right.

I'm telling you that the information you are going on is wrong. You can feel free to disagree with what I'm telling you as well. But I've sold a few of these parts, and dealt with a few of these cars, and I'm not someone new to this site, these cars, or these parts. So if you'd rather believe what you've read and gathered I'm not going to be able to stop you.

You are assuming that the information you've gathered is correct. It is not.

 

1 gallon bigger. They are also plastic and not steel, more than offsetting the extra 7 pounds or so of fuel held within. And not all LS1's have those tanks, I know '98's for sure have steel tanks.

 

I know this.

 

Ok, Well i've been reading all of what I believe for years. So obviously I will keep on believing what the majority believes on this subject.

 

For the record, I am NOT Donohue96M6Z28

 

There can also be many other things... Like options, Which tranny, mods, wheels And i've also head that to. The LS1 tank is slightly larger ib some.

I would assume a Aluminum Block weight's less then the lt1 iron one...? Aren't the LS1 spring rates different as well? Otherwise i dont see why they would list two seprate drop rates...

 

Thanks for the info guys, but now that I think about most springs to do lower the vehicle more than what it says. So now Im leanning more towards the Hotchkis springs (1") with the current Monroe Shocks that I have, since my car is just a daily driver.

 

Once again ... I agree with you, Sam.

I think I see a trend ...

 

I had the Sportlines on our 02 WS.6, and it ended up dropping the car EXACTLY 2.25" at all four corners, as compared to a friends stock 02 Firehawk. I think i ordered LT1 springs, because it was the only part number i could find at the time.