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Feb 8, 2004 | 03:30 PM

BADSZ28

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From: NW Chicago Subs

Factory cams

Does any one know the specs for these cams or where I can find them?

01-02 LS1
02-up LS6
GMs LS1-6 Hotcam

Thanks.

Feb 8, 2004 | 04:05 PM

Cal

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Fbody LS1 cam '98-00:
202/210 intake/exhaust degrees duration
.496/.496 inches lift
116 LSA

Fbody LS1 cam '01-02:
198/197 intake/exhaust degrees duration
.466/.478 inches lift
115 LSA

Ybody LS1 cam '97-01:
198/208 intake/exhaust degrees duration
.500/.500 inches lift
115.5 LSA

Old LS6 cam:
207/217 intake/exhaust degrees duration
.525/.525 inches lift
116 LSA

New LS6 cam:
204/218 intake/exhaust degrees duration
.551/.547 inches lift
117 LSA

GMPP Hot Cam:
218/227 intake/exhaust degrees duration
.525/.525 inches lift
112 LSA

GMPP ASA Cam:
226/236 intake/exhaust degrees duration
.525/.525 inches lift
110 LSA

GMPP Grand-Am Cup Cam:
239/251 intake/exhaust degrees duration
.570/.570 inches lift
106 LSA
RPM range: 4000-7000

TR224 Cam:
224/224 intake/exhaust degrees duration
.561/561 inches lift
114 LSA

Comp Cams
218/218
.563/.563
114 LSA

MTI B1
221/221
.558/.558
114 LSA

MTI T1
221/221
.558/.558
112 LSA

MTI C1
222/222
.566/.566
112 LSA

MTI C2
224/224
.581/.581
112 LSA

MTI X1
230/227
.591/.571
112 LSA

May I sugest the "Grand-Am Cup" Cam?

Last edited by Cal; Feb 8, 2004 at 05:53 PM.

Feb 8, 2004 | 04:10 PM

jrp

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these are the actual stock ls1 cam specs on the fbody as spec'd by comps

stock 98 trans am cam

duration@.050 198.86 intake 209.25 exhaust
lift .498 intake .497 exhaust
LSA 119.45

stock 02 trans am cam

duration@.050 196.37 intake 208.72 exhaust
lift .464 intake .479 exhaust
LSA 115.92

Feb 8, 2004 | 04:53 PM

Cal

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JRP, FWIW, when I miked the stock cam that cam out of my low-mileage 2001 Camaro, I measured 0.478 lift on both the exhaust and intake as advertized by GM. I've always heard that the 2001 and 2002 fbody and truck cams are identical.

Feb 8, 2004 | 05:14 PM

jrp

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ya, the 01-02 fbody cams are the same as the 6.0l cams. advertised specs on the cams from the ls1/ls6 chevy book are

197/207 .467/.479 116lsa

which is pretty much spot on to what comps spec'd theres too. i should spec my 98 cam and see what it comes out to.

Feb 8, 2004 | 05:43 PM

Cal

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Well in the GM 2001 Camaro/Firbird "F" Shop Manual, it specs the cam at 0.274 intake and 0.281 exhaust. After you multiply by 1.7 you get 0.466 intake and 0.478 exhaust. I don't know what GM's manufacturing tolerance is, but if they are like Thunder Racing the actual lift could vary +/- a couple of thousandths. No mater how you look at it though, this cam is just too small IMO. I think I'll go back and change my original post from .478 on the intake to .466 so I'm not spreading bad information.

Last edited by Cal; Feb 8, 2004 at 05:52 PM.

Feb 8, 2004 | 09:33 PM

BADSZ28

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From: NW Chicago Subs

It looks like pre 01 cars had better cams. They have more lift and durration. A stock pre 01 cam migth make more power in a 01-02 car than an 01-02 cam.

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Feb 9, 2004 | 01:04 PM

BADSZ28

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Thanks guys for all the responces. I'm thinking about a Z06 cam for now. Eventually I want a nice lopy cam that will give me power with good road manners. But that will wait for heads.

Feb 18, 2004 | 12:09 AM

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Cal

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Changing a cam is a lot of work to do twice; I'd just get a TR224 114 cam and be done with it. It will idle very smooth with a good tune. Z06 cam is a bit low on duration IMO.

Feb 18, 2004 | 04:04 AM

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jrp

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Quote:

Originally Posted by Cal

Changing a cam is a lot of work to do twice; I'd just get a TR224 114 cam and be done with it. It will idle very smooth with a good tune. Z06 cam is a bit low on duration IMO.

if he does the ls6 cam with some 918's first time around, swapping in a new cam the 2nd time around isnt that bad. but i agree, just get the bigger cam first to begin with.

Dec 1, 2004 | 01:39 PM

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87GMC

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From: Odessa, Texas

Questions on valvetrain. I have a 98 f-body and seems power is going flat around 5000 rpms. I know the 98's have a bigger cam. My question is im fixing to install a ls6 intake, Lt's with ory and exhaust system. Also get rid of egr and cats. Should I install valve springs? will it help or are the cams going pertty much flat at those rpm's. It also has a M6