TheBlueKnight

iTrader: (4)

So my theory starts off like this. The 2001 and 2002 F-bods came with the LS6 intake manifold, but to tone down the power, the factory put in a smaller cam shaft. So if you have a 98'-00' f-bod and put on an LS6 intake manilfold, you will have more power than the 01'-02' because you both have the LS6 intake manifold, but the 98'-00' still has the bigger cam, not the little one like the 01'-02' got to tone down the power. Is this correct?

Shepp1691

iTrader: (8)

I thought only the SS got the LS6 manifold.... could be wrong, would like to know myself.

1BAD_LS1

iTrader: (36)

never thought about that..... guess it makes sense though.... not for sure but my guess would be yes...but not much more.

ss1129

iTrader: (16)

01-02 came with better flowing heads and exhaust manifolds too. All 01-02s came with the ls6 intake.

406malibu

the heads dont flow THAT much better, only difference is the way its cast, not the design. and its mid year 00 that they changed the heads.

406malibu

ALL 01-02 ls1 cars came with ls6 manifolds.

TheBlueKnight

iTrader: (4)

I have a 2000 WS6, how can I find out if I have the slightly better flowing heads or not? Will my door jam have a sticker with when my car was made so I can compare that to when they started makin the slightly better flowing heads or will they have a different stamp number?

blk/slvr02ss

iTrader: (21)

If your theory is right then how do the 01-02 's make more RWHP.

CoastieWS6

iTrader: (1)

Look on the front of your heads they stamped it right above the maifold. 853 is 98's, 805's are 99-00 or it might be 806 cant remember. then the 01, 02's and mid year 00 have 241's.

kenSS

iTrader: (1)

check the casting number on pass. side by #2 primary pipe on the head. it will say 241 or 843. 241 came out on june 2000 cars and newer. my SS is a june 2000 car with the 241's.

kenSS

iTrader: (1)

damn, i posted 2 minutes too late.

TheBlueKnight

iTrader: (4)

The LS6 manifold gave it more power, but the new cam shaft only slightly hindered its hp numbers, not dropping it below 98'-00' hp numbers

CoastieWS6

iTrader: (1)

LOL beat you to it!

BobDoLe

iTrader: (11)

i'd say your theory is correct.

but you gotta consider that they went with cheaper-to-make exhaust manifolds that flow better.
supposedly, the ls6 intake and exhaust manifolds bumped up power, but the cam was smaller to allow gm to ditch the egr. it was all about more efficient (cheaper) production of fbodies.

the heads are all similar except that 98 ls1 heads had the perimeter valve cover bolts.
some spread rumor that the 241 heads are better than the 843's, but when you talk to head porters and sponsors on here, they say they all flow the same. for anyone who disagrees, show us FLOW BENCH numbers as opposed to repeating what you heard from the 12 year old up the street.

pitbull14218

iTrader: (3)

my car is march of 2000 and has 241 heads

greg_74

iTrader: (9)

Was the came actually meant to tone down power compared to the previous years or compared to the Vette? Like the the LS1's were always rated lower on the Camaros and TAs than the Vettes. I know the cam in the 01-02's is supposed to produce better low end hp and torque numbers, correct me if I'm wrong but I thought it was a truck cam.

2000badbird

iTrader: (5)

yes the 01-02 cam is identical to the 6.0 truck cam...... in theory an 99 or 00 with a ls6 intake could produce more power if used with headers and tuned but the simple fact remains an ls1 is an ls1

SladeX

The 98-00 exhaust manifolds are junk. The passenger side one is a LOG style manifold. It's a miracle it managed the numbers it did when I think about it.

The 01-02 may be cast iron, but they are designed like shorties which are a big improvement over the log.

The heads may be slightly better in later years, but no one's really checked flow numbers nor cares because aftermarket heads will outflow LS1 style heads hands down.

Cam wise, there's more to specs than what meets the eye and the 01-02 may be smaller, but it was a more efficient design in which no EGR was needed in the lower rpm for efficiency.

I upgraded to a LS6 intake but added a Ls7 clutch which wrecked the test, but despite that "loss" in power, the car went from 298HP/315ft/lb to 306HP/325ft/lb. Not just that, the whole torque curve shifted up by similar amounts. If anything I'd say toss in the 01-02 manifolds and back to LS1 style clutch and it could probably be the case of my 98 up in the "factory freak" territory of the 01-02 cars.

CodeRed2000SS

ok 98-99 cars came with manifolds that are not as good as 00-02. 2000 cars have the biggest camshaft at .500 lift. some 2000 cars came with either the 853's or 241's. i guess it just depended on what they felt like installing that day. all cars 01-02 have ls6 intakes mainly because gm stopped production on the ls1 style. now, towards the end of 2002 gm started producing some f-bodys with 243 heads (ls6) and some cars even got the ls6 block. this was mainly done because the ls1 was phasing out due to the production of the ls2. gm has always done this, even way back in the 50's and 60's.

406malibu

wow... please delete your post before you spread anymore misinformation...