I saw at GM Goodwrench this
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High Output Camshaft
This flat tappet hydraulic cam is used in high-performance X-11 and fuel-injected V6/60º engines. It has .394" intake lift and .410" exhaust lift. The intake duration is 2760 at the lash point and 1960 at .050" from the base circle. The exhaust duration is 2930 at the lash point and 2030 at .050" from the base circle.
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Can that be used in a fiero? also saw this one

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This performance flat tappet hydraulic camshaft is used in the new 3.4-liter engine conversion package (P/N 12363230) and is also applicable to 2.8-liter and 3.1-liter engines. Designed to increase mid-range torque and horsepower, this camshaft is ideal for daily performance usage. The duration at .050" lift (intake/exhaust) is 204º/216º, while the valve lift is .427"/.454". The basic RPM range is 1500-4500, and the lobe separation is 107º.
Technical Notes: Use with valve spring P/N 12363215 and retainer P/N 12363216.
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Wich one I should use with a turbo setup?

Thanx

DreX

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Just another Red Fiero - Back 2 the Future Prototype. :D

The first cam you have listed is the stock Fiero cam.
I don't see why the 3.4 cam wouldn't work with a turbo set up but it might be a good idea to ask the people that make the turbo
if that cam will work with their set-up alright or not. I would guess that the 3.4 cam is going to improve your mid to upper end power which is exactly what a TC does so i'm not sure that you're really going to improve anything by changing cams. It might be a better idea to keep the stock cam and keep your lowend grunt in tact and then let the turbo take care of the rest.
Some porting wouldn't hurt though.

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Dave Gunsul
Activities Director
Northern IL. Fiero Enthusiasts
86 GT modified
85 SE daily driver

Thanx for the info. About the turbo setup I will make it, is very cheap compared to buy a kit. Because Im rebuilding the engine to acept the turbo, need to know wich is better cam option for it. I asked various ppl that designs turbo setups but they dont give much help. As far I know a high lift will be good for turbo setup, and teorically, no change in timing and dont know about duration. Is thats the most diff part of the matchup for now.

If someone know about cams and turbo, please instruct me. heheh

Thanx

DreX

Heck I figure I'll throw this up..

if I'm looking for a cam I figure I wouldn't need a torquey one the car has quite a bit, so what should I be looking for? I just want something that will pull me through the gears more, thanks.

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-KC

1988 Formula, 3.4
LoW Key's Red Bullet

I have installed the GM cam , # 12364059 ,it includes lifters , for about $110 . It has 204*/216* duration , .424/.454 lift , with 112* lobe separation. It is similar to the crane 2030 cam , but cheaper . In fact it is made by Crane for GM. I am also using Comp Cams 1.52 rollertip rockers. The 1.6 might be too much with this cam ,(valve spring bind) I am using 3.4 valve springs with Hi-Perf. retainers & keepers. These springs are good to 6500+. My engine is not running yet , 3.2. Too much other things to list , but e-mail me if you want . Shaun 41178 says this is a great cam for turbo .

quote Originally posted by DreXteR: Thanx for the info. About the turbo setup I will make it, is very cheap compared to buy a kit. Because Im rebuilding the engine to acept the turbo, need to know wich is better cam option for it. I asked various ppl that designs turbo setups but they dont give much help. As far I know a high lift will be good for turbo setup, and teorically, no change in timing and dont know about duration. Is thats the most diff part of the matchup for now. DreX

Since you're making your own turbo you might want to try one of the cam help lines. I'm not sure if Crane has one but I would think that they have to have some kind of tech help. Since it's their cam they should be able to suggest which one of their cams will work best for your applictaion. Be ready to have all your specs available for them so they can give some informed advice.

LOWKEY: Your cam choice should depend on what you want the car to do and what your application is. The stock 3.4 cam is pretty good but you have the room to increase your cam if you want to. You're right on about not worrying about low end grunt with the 3.4
in a light Formula. When I was looking into doing a 3.4 I asked GM if there was enough clearence for 1.6 rockers and they said yes,
so you could easily go that route or use the
next step up cam from Crane. Normally i'd suggest the bigger cam over the bigger rockers but the next step up is a pretty big cam and you might have more idle problems with it if you go that route. Problem is i'm not sure on this so I really can't say. I do know that some people have used a 480 lift cam in a Fiero before and the idle was choppy
but livable, for them at least. I've got all the specs for the Crane cam so please feel free to email me if you want them and i'll send them to you.

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Dave Gunsul
Activities Director
Northern IL. Fiero Enthusiasts
86 GT modified
85 SE daily driver