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vortech heads and intake with this cam?`

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Old Feb 3, 2008 | 01:53 AM
  #1  
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Car: 88 iroc-z z-28
Engine: 383
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vortech heads and intake with this cam?`

heres teh cam i was thinking of. I need the wildest cam that will work with stock vortech heads. http://store.summitracing.com/partde...1&autoview=sku

I think that that cam will work well. Also I assume this cam wont work well if i ever go RMT?

What is a good timing chain to use with this whole setup? Can I keep my stock balancer?

BTW does anyoen have the link for the tpi vortec lower intake and heads combo??? I know it is much cheaper to buy that way/.
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Old Feb 3, 2008 | 02:03 AM
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: vortech heads and intake with this cam?`

you have a roller cam block in there...why go to a flat tappet cam? run a roller cam and you can go bigger on the cam than the one you had selected.

Scoggin dickey is where you want to look for the heads/intake combo
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Old Feb 3, 2008 | 07:42 AM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

Thats the thing. I could not find the one for the tpi. Only the tbi. Maybe if i call them. Well i need teh wildest cam I can safely fit on a stock set of vortec heads. I wanna keep the TPI and i think I can get into the 12's with it... At least I think. I know I will prolly need to do work on my heads for that, but for now. I think 3.70 gears will be good. I just dont know how streetable 3.70 gears are.
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Old Feb 3, 2008 | 08:32 AM
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Re: vortech heads and intake with this cam?`

3.70 Gears are very streetable with the 700R4 OD. I love my set.
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Old Feb 3, 2008 | 08:50 AM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

Okay. Now all I need to know is should I get a custom grind cam?


AM I looking for hydraulic roller Or mechanical roller? SOmeone wanna point me in the most powerful cam I can get safely on stock vortecs?

Also should I save teh money and get the upgraded vortecs? the ones with the z28 springs????
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Old Feb 3, 2008 | 09:02 AM
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Car: 1987 Monte Carlo SS
Engine: Vortec headed 350
Transmission: '89 WC T5
Axle/Gears: 3.73
Re: vortech heads and intake with this cam?`

I know a person can get the comp beehive springs and be able to handle .525 lift without any problems for less then $200
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Old Feb 3, 2008 | 11:38 AM
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Axle/Gears: MWC 9” 3.00
Re: vortech heads and intake with this cam?`

Originally Posted by kowboy59
Thats the thing. I could not find the one for the tpi. Only the tbi. Maybe if i call them. Well i need teh wildest cam I can safely fit on a stock set of vortec heads. I wanna keep the TPI and i think I can get into the 12's with it... At least I think. I know I will prolly need to do work on my heads for that, but for now. I think 3.70 gears will be good. I just dont know how streetable 3.70 gears are.

Why do you need the wildest cam for vortec heads? vortec heads can run pretty much any cam...its the intake setup thats gonna be the deciding factor on what cam you should get. if you want to keep TPI, then the cam needs to match that.

Also you will need this tuned...and a big wild cam will not be as friendly to the ecm as a more suitable TPI cam.

if you want 12's with TPI and vortec heads you dont need a huge cam..just good gear and good suspension with a drag tire and good converter in the trans.


You want a roller cam. If you do the beehive spring kit which is nice but not really needed for a TPI cam setup, you'll have enough clearance to run .500 lift, maybe abit more. If not, you need to buy the upgraded vortecs that can handle alot more lift. You need to get the heavy duty Z28 springs that are good to .570-.600 lift or so. Run self aligning rocker arms with them.

A cam should be something like the CC502 or CC503 from comp or similar specs from Crane/Isky/etc. Anything like that will work. The XFI 268 grind is a more aggressive version of the CC502. Has alot of lift which isnt great with vortec heads since they peak flow at around .500. So keep lift around that which is where the 502 and 503 cams live.
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Old Feb 3, 2008 | 02:02 PM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

Andwith that cam you offer. I will have a good idle?

I also do not want to have to have the car and gears setup nice so i can cruise. I just want a good idle and a decent amount of power. SO i thought id hit those upgraded vortec heads with one of those cams i guess.

If i go with that more agressive cam, will i lose any power?

I am getting the megasquirt to tune. Will this be efficient in what i need?
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Old Feb 3, 2008 | 02:06 PM
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Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: vortech heads and intake with this cam?`

with 3.45-3.70 gears and 700r4 tranny either of the cams i suggested will cruise nice. if your somewhat worried about it, go with the smaller 502 cam and vortec heads

that will be a nice combo. megasquirt will handle most anything you'll be fine there.
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Old Feb 3, 2008 | 02:25 PM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

im not worried bout gas mileage. Im worried about driving too high in rpms because of my gears. If that more agressive cam will give me an extra little umph. Noticeable or not. I would go in that path. I love the sound of a cam so thats where i was getting at with a larger cam. But as you stated before I do not want top lose performance
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Old Feb 3, 2008 | 02:58 PM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

just found out that the ones with the z28 springs could possibly handle a .600 lift. I know thats too much for vortec heads, but i think its a possibility
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Old Feb 3, 2008 | 03:02 PM
  #12  
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Car: 89 Formula
Engine: 350
Transmission: TH 700R4
Axle/Gears: 3.27
Re: vortech heads and intake with this cam?`

I have the TPIS ZZ9 cam w 1.6 rrwith E-Tec heads (aluminum Vortecs by Edlebrock) she pulls pretty hard
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Old Feb 3, 2008 | 03:03 PM
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: vortech heads and intake with this cam?`

yeah the larger cams will give more power. what i was saying was the bigger cams i was suggesting dont need alot of gear to run... a 3.45-3.70 will work great and keep your rpms somewhat low at cruising speeds when in overdrive. they wont have any low speed driveablity problems since they arent that big. with the proper tune, they will run good.

224/230 cam will idle nicely, giving you abit of that lopey performance sound. the smaller cam will still give a decent idle sound but wont be nearly as aggressive. it will be smoother.

another good cam is the ZZ9 cam, 212/226 i think it is. works well with TPI and vortec heads. i like its duration split for the vortec heads since vortec heads dont flow that well on the exhaust side of things
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Old Feb 3, 2008 | 04:37 PM
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

okay. Those etec heads.. are they better than what I would be buying from sd the z28 vortecs?
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Old Feb 3, 2008 | 04:52 PM
  #15  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: vortech heads and intake with this cam?`

Okay i FOund that i like that xfi cam. Now i need 1.6 rockers and what would be some good lifters?
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Old Feb 3, 2008 | 06:55 PM
  #16  
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: vortech heads and intake with this cam?`

you dont need 1.6 rockers on the xfi for vortecs since they dont flow much over .500" lift. I'm not sure of the etec flow numbers tho. for the time being tho i'd keep lift down with 1.5 or 1.52 rocker arms

for good lifters that are cheap, try some LS7 lifters you can get new for 120 bucks.
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