89IrocZ350TPI

Hey guys I am looking for a better cam for my 89 L98. So far I have checked out Comp- Xtreme Energy cams beacuse I hear they give good gains. Right now I am running 13.5 and I am trying to break a 12.9 and still be street legal. So I am thinking about a mild cam. Any info on a better cam would be helpful such as comp cams,ZZ4,LT4,EdelBrock ect...I am really trying to decide which to go with. Thanks

89IrocZ350TPI

Anyone out there? lol

91Z28-350

89IrocZ350TPI

Ya I did...Wanted a recommendation.

stubbs

The ZZ9 from TPiS is a really nice cam, excellent for a street car, I went with the ZZ409 which is a little more hoped up on the intake, here's the specs for both and both are 375 dollars
ZZ-9 HydraulicRoller:

Intake Exhaust Advertised duration 282 287
Duration at .050 212 226
Gross lift .483 .520
Lobe separation 112

ZZ-409 Hyd Roller:

Adv. duration 287/287, duration @.050 226/226, Lift .520/.520. 112 LSA.

TraviZ

iTrader: (2)

i still have a brand new in box comp cams xe282hr10

230/236 duration

510 520 lift

110 lsa

200 shipped.

2200-5800 rpm

great for tpi!

3.8TransAM

The 212/218 cam

with .488(was it .498) and .498 lift is a great one in near stock configured TPI car.

Had a couple friends run it now from Comp

Little tweaking just makes it a nice clean puller wherever you drop the pedal.

later
Jeremy

91Z28-350

3.8TransAM, That's the 08-501-8.

Stock heads? Go search. Stock intake? Got gears? Got stall?

I'd go for the XFI grinds and not look back. 08-466-8 aka 268XFI HR13 218/224 @ 0.050 .570/.565 113LSA.

jmiller

I've got a TPIS ZZ9 cam in my 383 87' IROC, and a stock ZZ4 crate motor in my 67' TPI camaro. Both are MAF setups. Have absolutely no complaints with either daily drivers. Obviously the ZZ9 cam is more radical than the ZZ4 cam , but it has no downfall with TPI. I have stock torque convertors (700R4 trans) in both cars and see no need for a high stall convertor. Dead idle stomp on throttle simply turns the car sideways through both first and second gear, no bog or hesitation with either car.

89IrocZ350TPI

Cool. Whats a ZZ4 cam go for including labor?

FirebirdNYC

you can get them from pace parts for 200 i believe. But if you search ebay there is this one guy that has like 10 of them .. 155 plus 15 shipping. Good deal if u ask me. Mine is on the way )

89IrocZ350TPI

hmm not bad. Im not a big fan of ebay though.

Shagwell

I agree on the suggested specs/cams...
but thats rediculous. Over 3 beans for a cam is nuts.

My Herbert was $220...and it's billet, not cast like some.

jmiller

Pace Performance: 800-748-3791
ZZ4 Cam - Current price is $192.95 + shipping

91Z28-350

Labor? I hope you're not serious.

Over $1000 total more than likely unless you find a fixed price somewhere....which may exist. That's cam, springs, shims, retainers, valve stem seals, fluids, gaskets, and a whole ton of labor @ $95/hr where I'm at.

Isn't it funny how all these cam posts turn into the perpetual ZZ4 cam stuff. Even when alternate suggestions are given, the people always want the ZZ4 as if it's ***'s gift to TPI. There were at least 3 separate threads all talking about the ZZ4 cam on the front page alone.

89IrocZ350TPI

Actually Comp Cams is my number one choice. It seems alot of people in here have ZZ4 cams, thats why I asked about it.

Blackbari

3.8TransAM, do you have to burn a new chip for a ZZ4 engine or that cam you recommended? I am asking because I really don't know. I get the impression that if you install a slightly longer duration and slightly higher lift cam than the stock hydraulic roller TPI cam with MAF, a new chip isn't really needed unless you want to take full advantage of the new cam. Is this true?

bonz

Here is a list of mods I went with. I havent done any tuning with the computer and it runs fine. It has a awsome idle to.

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Mods. GMPP Vortec heads, Comp Cams XR269HR, Crane Gold Rockers, Hooker headers, SDPC intake manifold, free flow exhaust, Air Foil, TB Bypass, K&N filter. Future mods, TPIS Runners, AFPR.

Blackbari

Hi bonz,
Do you still have an EGR valve since you have Vortec heads? If so, any trouble codes?

Shagwell

I wouldn't go that big with stock heads, even ported you'd be past them.

- DANS87GTA is running 210/214 @.050, 497/502 with stock ecm/tune.

89IrocZ350TPI

u will have to change ur shift points as well, beacuse u will be making more power after 5K.

Brisk

iTrader: (25)

how does the zz4 cam compare to a LT4 hotcam in performance and tuning etc.. are they very similar?

bonz

Yep I removed the egr and have not had any trouble codes even after driving well over an hour straight. I also removed the smog pump to clean up the bay.

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Mods. GMPP Vortec heads, Comp Cams XR269HR, Crane Gold Rockers, Hooker headers, SDPC intake manifold, free flow exhaust, Air Foil, TB Bypass, K&N filter. Future mods, TPIS Runners, AFPR.

GregWestphal

iTrader: (1)

The ZZ4 and LT4 HOT cams are quite different. The HOT cam has more duration (218/228 degrees @ .050" instead of 208/221) and I think more lift, so it'll make more upper-end power and idle a little lumpier (might need to program in a higher idle speed).

D's89IROCZ

actually you don't make much power past 5000 rpm. I have it and with a ported edlbrock intake and runners ...stock heads . I got a peak of 4900 rpm. Untunned. The heads really hold it back I think . But you will also have to have the heads modded to handle the higher lift too .

DodgeTech

I'm in the same delma with my 5.7 TPI. I'm in need of a cam badly. The engine is bone stock and I'm gathering parts before i assemble and install it. I was browsing the XFI cams. I'm looking for something that will give me a nasty idle. I really want the biggest cam i can wedge in the engine WITH the stock heads. I dont plan on changing the heads anytime soon either. Any recommendations? I'm looking at these scorpion roller rockers as well. What size is the studs on these TPI 5.7s? The catolog is saying me 3/8 and 7/16. I want to go with the 1.6 size but dont know the stud size I'm going to have to get rods and valve springs as well.

1bdbrd

iTrader: (1)

your not going to be able to run a very big or "nasty" cam with stock heads. you also dont have pressed in studs for your rockers. i believe you have to have the heads machined to accept 3/8 studs and then have the heads machined for bigger springs but a search on here about the heads would give you exact answers.

DodgeTech

its either 3/8 or 7/16. i cant remember what i used last time i built one of these engines. you dont need to machine the heads for springs either, you just pick up a stock size pair that are stronger. i wish i could remember what i used last time i built one of these things

Dans87GTA

iTrader: (1)

Actually Shagwell its 214/220 @.050 come on man i thought you knew my car as good or if not better than me! and its a howards cam part # 110235-12 and it has a rought idle people think that i have an ungodly cam in it and im running stock heads that have a competition valve job ported and she runs really good but later im going to get a cam with more dur. and more lift but next for the motor is vortecs cant wait.