Z06PSI

iTrader: (33)

Is a difference between the 98-00 Ls1 heads compared to the 01-02 LS1 heads.... pls educate me....specifically with the addition of a LS6 intake to a 00'?????

Damian

iTrader: (89)

The casting #'s are different, but the heads are interchangable on all years. IE: 98 heads could fit on a 01 block and/or vise versa. Neither year head is better than the other.

josh

Z06PSI

iTrader: (33)

Well this was a quote from someone else in another post....

"Yes the LS6 heads along with the LQ4, LQ9 heads have D shaped exhaust ports.. They also have raised floors, one of the reasons there is a better gain with the LS6 intake and those heads.. It's practically worthless to put an LS6 intake on stock pre '01 LS1 heads.. "

HumpinSS

iTrader: (1)

The LS6, LQ4 and LQ9 heads never came on Fbodys. Only the ZO6 and the trucks. The heads from 98-02 are all LS1 heads which will see gains from the LS6 intake. The quote seems to have a little misinformation in it. None of the F-Bods came with D-shaped ports

niphilli

I have read that the '01 & 02 castings do flow a little better in stock form than the 98-00 castings. That said I think the difference is nominal. Like said above the 6L truck heads & Z06 heads have a differently shaped exhaust port and flow better than the stock F-body castings. The LS6 intake was added to the F-bods in '01 & '02 but the intake and exhaust ports on the heads are shaped the same as all of the F-bod cars.

Z06PSI

iTrader: (33)

Good just bought a LS6 intake and was wondering.... also another related question... coolant pipes.. are they mandatory when switching... if so.... where to get them...????? thanks....

bigeller

iTrader: (2)

Hah where is the misinformation? That was me being quoted and it was taken out of context.. My point is the LS6 intake should be the one of the last mods if you're not going to do ported heads at the same time.. Bang for the buck will be better elsewhere.. I've heard numerous times of how the #241 castings slightly outflow previous Ls1 heads and they are preferred by the head porters.. Look at the numbers below.. Two year old information proves there isn't much of a gain with the LS6 intake and stock LS1 heads.. As far as misinformation goes, much of it has been spread by GMHTP in regards to heads.. No one ever said the LS6,LQ4, or LQ9 heads came on F bodies?? I said they all had D shaped exhaust ports from '01 up. I have an '02 LQ9 in my Z28 and it has the D ports , #317.. I also have a set of 70cc SDPC #243 CNC LS6 heads.. They are normally like 64.5cc..

You'll see from the numbers below that there is not going to be as significant of a gain with the 98-00 heads and LS6 intake.. The LS6 intake is better and obviously a better fit for the better flowing heads.. It wouldn't be wise to blow $400 bucks for a small amount of cfm without going to ported heads... That's just my opinion, I like to use my money wisely..

Heads------ LS1 LS1 LS6 LS6
Intake ----- LS1 LS6 LS1 LS6
.200" -------136 136 156 154
.300" -------184 186 199 204
.350" -------200 206 212 220
.400" -------214 223 224 235
.450" -------222 227 232 247
.500" -------227 236 238 257
.550" -------229 241 243 263
.600" -------235 242 247 265

jrp

iTrader: (16)

yes you'll need new a new coolant pipe and plugs. im sure various sponsors carry them, i bought mine from gmpartsdirect.

samz28

So your saying with a mild cam (224/226 .570/.570 112) the ls6 intake will give usable gains on the dyno/top end?

Z06PSI

iTrader: (33)

I am wondering the same thing... my cam specs are

234/230 .578 112 lsa...

For the 260.00 bucks I paid for the intake I didn't think I could go wrong....

gojo

iTrader: (12)

Just be sure to get the valve covers for the appropriate years.

Z06PSI

iTrader: (33)

Part number for the new coolant pipes? and roughly how much...

jrp

iTrader: (16)

what i paid.

Quantity
PART NO.
DESCRIPTION
PRICE
EXT. PRICE
CORE
TOTAL
STATUS
Tracking #


1
12568478
PIPE ASM
$20.64
$20.64
$0.00
$20.64
Shipped UPS


2
12563325
COVER
$2.51
$5.02
$0.00
$5.02
Shipped UPS


Taxes:
$0.00

Handling and Shipping:
$13.20

ORDER TOTAL:
$38.86

hondadream50

some 02 and 01 camaros have Ls6 blocks witch come in the Z06. .. late

WS6FirebirdTA00

iTrader: (33)

i heard that some of the later ls1's in 2002 came with zome ls6 parts due to a shortage of ls1 components, buddy of mine had 2 2002 ws6's and one was definately faster than the other. any truth to this? the second one he got was built in april 02 and the other was build end of 01 year

JoSeY

the 01's and 02's were noticabley faster than similar modded or stock 98's-00's...a friend of mine could pull me everytime and we had identical set ups except his was a 02 and mine was a 99...I know the LS6 intake helped a bunch but the 241 castings were tweaked a lil too to help low end cause they went w/a smaller cam in the 01's and 02's...

I know when I had my heads ported and polished I insisted I have 241 castings and not the 843 castings...granted after porting I'm sure there wasn't much difference but I wasn't going to take a chance.

I honestly wish I had gone w/the 5.3L heads now, they are making KILLER numbers...ahhh well, MTI will work on these heads again when I get my bottom end forged...I think hitting the 110,000 mile mark and making over 400rwhp N/A and dropping a 100shot on it every now and then will cause a spun bearing soon enough...but running 6qts of Royal Purple it's seemed to hold up quite nicely...now the 110,000 mile 4L60 is starting to hate me....BAD.

WS6FirebirdTA00

iTrader: (33)

so the 98-00 are slower i mean i know they are but after some mods even if they are the same the 01-02 would pull a litte bit, they have faster factory times in the 1/4 i thought by about .1 sec or so

slow

iTrader: (7)

98 has perimite bolt valve covers.

the 99+ all use the same center bolt covers.

Ryan

JoSeY

Pretty much...they really helped the motor breathe using the LS6 intake.

When I did my H/C with MTI parts I kept my stock LS1 intake cause I ran out of funds...once I did put the LS6 intake on @ my mod level I picked up over 20hp w/just that intake. LS6 intakes are gonna get cheap once the LSX intake hits the market...pretty much, if you put an LS6 intake on a 98-00 you would hang w/the 01's and 02's because the 98-00's have a bigger bumpstick...the LS6 intake and some computer tweaking are what makes the 01-02's just a hair faster from the factory.

samz28

So the question is: With the cam, is a ls6 intake still a waste (longtubes as well).