Zz4 cam
Le Mans Master
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From: Akron Ohio
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Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
ZZ4 is fairly to stock spec imo too much so. You wont have a lope; possibly consider a 212-214ish duration on the intake you can still use the stock converter still have a smooth idle pass smog etc and will feel a difference. It takes more of a jump in size to feel things than youd think. Opinions will vary
Le Mans Master
Joined: May 2007
Posts: 8,448
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From: Valparaiso
Stock L98 cam
Duration @ .050", 202/207
Lift: .413/.428 ,
114.5 LSA
ZZ4 cam :
Duration @.050 208/221
Lift: .474/.510
112 LSA
i really liked mine , i had it for a while with a stock tune, stock converter
and worked great !!!
Duration @ .050", 202/207
Lift: .413/.428 ,
114.5 LSA
ZZ4 cam :
Duration @.050 208/221
Lift: .474/.510
112 LSA
i really liked mine , i had it for a while with a stock tune, stock converter
and worked great !!!
Le Mans Master
Joined: Oct 2007
Posts: 9,675
Likes: 3,410
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
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St. Jude Donor '09-'10-'11
ZZ4 is fairly to stock spec imo too much so. You wont have a lope; possibly consider a 212-214ish duration on the intake you can still use the stock converter still have a smooth idle pass smog etc and will feel a difference. It takes more of a jump in size to feel things than youd think. Opinions will vary
Something with more duration would be noticed more than the ZZ4. I have a ZZ4 in my car and the improvement was not very noticeable. I personally like custom grind cams but off the shelf I would go with something like one of these:http://www.compcams.com/Company/CC/c...?csid=186&sb=2
http://www.compcams.com/Company/CC/c...?csid=179&sb=2
These would be best on a near stock engine. You would need a tune with any cam change. Headers and a good flowing exhaust system will wake up the car tremendously! At that point a little more exhaust duration (220-226 ish) and you will feel a nice improvement. I put the ZZ4 in my car cause I was new at cam technology and it was free. To do over I would get a custom grind for a stock L98 with headers which would end up looking like:
212-216 intake duration, and .500 lift
220-226 exhaust duration and .520 lift
112 LSA
106 ICL
Any more lift and the heads need to be checked for clearance. A cam in those ranges should work with a stock converter as well.
Last edited by Kubs; Sep 3, 2010 at 08:59 AM.
Burning Brakes
Joined: Aug 2006
Posts: 1,123
Likes: 1
From: Rockland County NY
When I was looking for cams for my 91 L98, somebody sent me this list of possibilities... it was great for a comparison. Maybe it will help.
ZZ4 (TPiS) 208/221 DUR
474/510 LIFT
ZZ9 (TPiS) 212/226
483/520
ZZ409 (TPiS) 226/226
520/520
CC502 (Comp) 218/224
495/503
CC503 (Comp) 224/230
503/510
LT4 HOTCAM
218/228
492/492
ZZ4 (TPiS) 208/221 DUR
474/510 LIFT
ZZ9 (TPiS) 212/226
483/520
ZZ409 (TPiS) 226/226
520/520
CC502 (Comp) 218/224
495/503
CC503 (Comp) 224/230
503/510
LT4 HOTCAM
218/228
492/492
Last edited by mdlfcrss; Sep 3, 2010 at 11:26 AM.
Le Mans Master
Joined: Oct 2007
Posts: 9,675
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I good tuner like PCMforless can tune it without issues. I have read of people using tighter LSAs in EFI cars. It depends on what you what to do with your car but you dont really need to go less than 110, especially for a stock/ish engine.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
I agree with the guys you will kik yourself after all the work if you don't go with a better cam. I wouldn't go with anything smaller than a LT4 hotcam. Put better springs on it if you are pulling the heads that way you could go with 1.6 RR later.
Thread Starter
Instructor
Joined: May 2004
Posts: 183
Likes: 0
From: Queens NY
With the hot cam I'm going to need a converter right? Maybe I'll do that first and hold off on the cam till after I just isn't want to take out the tranny yet wanted to do the whole tranny at once.