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Stupid guy Q...LT/LS ratings vs. real

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Old 09-22-2008, 06:53 PM
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Default Stupid guy Q...LT/LS ratings vs. real

I know the LS's were the same 98-02 (aside from the LS6 intake), but they all dyno'd the same regardless of option of 4th gen. (Z, WS6, SS, etc.)

Was it the same for the LT1? If I recall correctly the LT1 SS/Firehawk, etc. was rated higher than a Z LT1. Did they have the exact same motors/exhaust/tune, etc? and put down similar numbers regardless of option like the LS1's?

I did a quick search, but couldnt' find anything. I'm just curious cause I've noticed a few SS LT1's in my area after a dry spell of not seeing any for several years, so it just popped the curiosity.
Old 09-22-2008, 07:01 PM
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LT1 didn't even come close to dynoing near the LS1's. The typical LT1 M6 put down 250 at the wheels. Auto 240. LT1 SS would typically dyno 10rwhp higher because of the free flowing exhaust and intake mods.
Old 09-22-2008, 07:17 PM
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i know that the LT1s feel a hell of a lot torquier * SP* damn near got one until i learned about the OPTICRAP...
Old 09-22-2008, 08:32 PM
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Reading comprehension guys... the OP is asking if all of the LT1s put out similar numbers within each other, not compared to the LS1. For example... the saying here goes "an ls1 is an ls1 is an ls1...", does that same apply to LT1s?
Old 09-23-2008, 10:58 AM
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Originally Posted by bamxbam
Reading comprehension guys... the OP is asking if all of the LT1s put out similar numbers within each other, not compared to the LS1. For example... the saying here goes "an ls1 is an ls1 is an ls1...", does that same apply to LT1s?
Correct.

Thanks for hte responses guys, but, not really what I was asking.


So?....I guess simply I should have asked, is an LT1 and LT1, is an LT1? (like the LS1)?
Old 09-23-2008, 11:26 AM
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alot of the ls1 ss/firehawks/ws6s dyno higher due to the ram air/slp lid and exhaust from the factory.

The LT1 SS in 96 is the only 4th gen where "all" of the ss's were faster "stock"
Old 09-23-2008, 11:46 AM
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Originally Posted by liquidsmooth
alot of the ls1 ss/firehawks/ws6s dyno higher due to the ram air/slp lid and exhaust from the factory.
I thought not all LS's had SLP option though. wasn't it an extra option? I could have sworn the only difference was if you had an LS6 intake from 00-02. Other than that it would be minor and was basically a difference in Dyno's.

Originally Posted by liquidsmooth
The LT1 SS in 96 is the only 4th gen where "all" of the ss's were faster "stock"
So 93-97 LT1s are all the same including the WS6/Firehawk/SS's? EXCEPT for the 96 SS? If so, why is the 96 SS different?


SOrry for so many Q's just trying to learn more.
Old 09-23-2008, 11:56 AM
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From what I've seen an LT1 is an LT1 in my opinion. I have seen the special edition (SS, WS6) LT1's run no better than the base models most of the time.
Old 09-23-2008, 12:43 PM
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what i'm wondering is if the lt1 fbodies were severely underrated compared to the lt1 in the c4 vettes..
Old 09-23-2008, 01:14 PM
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Originally Posted by bamxbam
what i'm wondering is if the lt1 fbodies were severely underrated compared to the lt1 in the c4 vettes..
no, the power was about equal, for the lt1 vehicles,
however the lt4 equipped corvette was more powerful, i owned a lt1 corvette and the power was pretty much the same as a fbody,acceleration on the vette was better i imagine do to the lighter vehicle and the opti was actually easier to replace than fbody
Old 09-23-2008, 01:37 PM
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Originally Posted by bamxbam
what i'm wondering is if the lt1 fbodies were severely underrated compared to the lt1 in the c4 vettes..
No they dyno'd around the same.

LT4 was rated at 330 but dyno'd anywhere from 300-310 at the wheels bone stock.
Old 09-23-2008, 01:46 PM
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umm a true LT4 is rated at like 425 i had an LT1 with only the LT4 hot cam and minor bolt ons and it put down 330 to the ground thru an M6 and my buddy did the full swap and made 397
Old 09-23-2008, 01:55 PM
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the later ls1 blocks are also different. the 01-02 blocks were stronger and somthing in the oiling system was improved. but i can't remember exactly what...
Old 09-23-2008, 02:04 PM
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Originally Posted by witry
umm a true LT4 is rated at like 425 i had an LT1 with only the LT4 hot cam and minor bolt ons and it put down 330 to the ground thru an M6 and my buddy did the full swap and made 397
LT4 hot cam is not a production piece. I was speaking about the LT4 that came in the 96 grand sports and base 6spd vette's. It dyno'd at 300-310 at the wheels.

Here's a good site if you want to learn about the LT1/4

http://www.grandsportregistry.com/lt1vslt4.htm
Old 09-23-2008, 03:02 PM
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So basically, all LT1 and all LS1 motors are the same regardless of 4th gen or vette they are in. The only exceptions would be SLP option, and LS6 goodies. (as far as power is concerned).
Old 09-23-2008, 03:11 PM
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The motors are the same between the cars. 98-00 had a slightly larger camshaft compared to the 01-02, but the 01-02 came with the ls6 intake.

Where you gain HP with the firehawk/ss models are the options. Ram-air hoods that function as a slight ram air and a CAI, different cat-back options that are more free-flowing, etc. There is no doubt that a 96-97 SS with the ram air hood and a 2otl would flow more air/be faster than a z28 car. Completely depending on the options also (power windows/locks, ttop, anything that deals with weight). With the same options between the cars, the SS will be faster if they are both at optimum running condition.

The motors are the same, you just get a few extra hp from the intakes/catbacks.
Old 09-23-2008, 09:57 PM
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im pretty sure some of the 96-97 SS's got the lt4 in them, Im almost 100% positive that the the 30th anniversary SS's had the option of getting a lt4.
Old 09-23-2008, 10:21 PM
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There were 100 LT4 SS's made in 97. There were also a couple WS6's with the option, but I'm not sure of the numbers.
Old 09-23-2008, 10:26 PM
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Not sure if the LT4 was an OPTION in 97 SS cars, or if some of them got them by mistake or GM just trying to get rid of some extra LT4 setups. I've heard rumors of both ways, but have no idea which is true.
Old 09-23-2008, 11:19 PM
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Originally Posted by FlashLCD33
Not sure if the LT4 was an OPTION in 97 SS cars, or if some of them got them by mistake or GM just trying to get rid of some extra LT4 setups. I've heard rumors of both ways, but have no idea which is true.
i think it was just a special edition type of thing.



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