What cam's and piston's should i choose for 3.2

[Bogeymika]

Hi all performance guys.
I'am thinking to change my stock 3.2 euro sixer's camshafts to some more agressive ones.
What would be the best ones to go with?
My engine has Hestec efi and my own design race header's there's also the K&N air filter.
Engine is dynoed and have 200kw & 310nM.
Heads are ported and the engine has been rebuilt 1year ago.

I have searched the net and only ones that i found were Motor Meister and Webcams.
I did read my performance handbook but i believe that there might be more presice information in here :-)

My headers work well with the current setup but i could also change those to suit the new setup.

Is there any cam's that would work with stock pistons?

Is there point to change the stock one's? if I'am not changing the P's and C's and the cr would remain stock?
What could i gain with new cam's and header's?

If i choose to swap also the piston's what would be recomended cr for 98 oct. Finnish pump gas? Car is only used for racing.

I know i could maybe find all this info if i search long enough but i already spendt almost 3 hours of my precious working time for trying. :-)

Thanks
-Mika-

[jluetjen]

Can you provide some more details?
1) You say that you only use the car for racing -- what do the rules say are allowable modifications to the engine?
2) What is the size, length and design of your headers?
3) What is your desired rev range?
4) I may be the only person who doesn't know, but what is a "Hestec efi" system? Is it a common-plenum design or an individual throttle body design?

[Bogeymika]

Thanks jluetjen.
Here is some additional info.

) You say that you only use the car for racing -- what do the rules say are allowable modifications to the engine?
-Not much, i just need to keep it 6cylinder, 3.2liters and no turbo's or any other charging.
2) What is the size, length and design of your headers?
-now those are 41,5mm id, length is 720mm and 3 to 1 with dynomax at the end of each header. Primary tubes are side by side like in 914-6 original. And naturally all primary tubes are equal length.
3) What is your desired rev range?
-now the limiter is in 6300rpm. There is lots of power from around 2000rpm to 5800rpm, then it starts to drop. Rev range feels good now, but it would be nice to rev it some more. I have also direct fire option in my Hestec (and parts) allready, but did not feel that necessary with so low rpm's.
4) I may be the only person who doesn't know, but what is a "Hestec efi" system? Is it a common-plenum design or an individual throttle body design?
-I was expecting this. Hestec is Finnish made Engine Management System, like Motec, Haltech, Wolf, etc.
I'am using a stock 3.2 intake with 3.2 throttle body and stock injectors.

[jluetjen]

Have you read through this thread?

[Bill Verburg]

Don't forget that if the rev limit is extended the rod bolts become a more fragile link.

[camgrinder]

There are other options for camshafts....
http://www.drcamshafts.com

[jpnovak]

John, Congrats on the new business opportunity.

[cstreit]

It would really help if you could post the range you need to make power in. If it's 5500 to 7000 that's a very different cam then if it's 3500 to 6500...

[Bogeymika]

Thank's guys, this is really informative.

Range where i need power is around 3500 to 6500.
Finnish track's are so twisty and slow that i really need lots of torx and wide power range. Current setup is ok power range wise, but i would like to have more hp.

When do i need tougher valve spring's? If my engine does max. 7000rpm. would i need those?

Is there any other mod's that i could gain more power without opening the case?
How about making the stock 3.2 throttle body bigger?
Also, what kind of fuel pressure are you using in these engines.
I still have stock regulator set up but i'am going to change that to adjustable one.

Regards
-Mika-