Hi all,what the best cams for 2wd cosworth about stage 3 arround 350-400? with greens or siemens55 rs500i/c etc...
thanks a lot
Thanasis

 

standard mate

 

standard

 

What they^^^ say.
tabetha

 

you will need siemens for anything beyond 350hp, do you have valve pockets machined into your pistons?

 

hi,no i don't have valve pockets in my engine,but i will to another engine,when i will rebuild it..

 

if you dont have valve pockets then look at the AB07 cam

 

What benefits do you get from this cam mate?
Cheers shaun

 

About 100ft/lb...........

Edited to say,

on the right spec of course..

 

you;ll get a bit more out of the engine

ideallly it needs to be lived mapped tho to get the best from it

 

About 100lbft, amazing no one else managed to do this in all those years!!
Forget this crap put about figure, imagine that that you would already need a engine in dire need of a tune for a cam to make this much difference, so you are not "getting" anything rather you are restoring what you always should have had on that spec.
The timing figure is almost identical to a BD cam, I think it was the 14 when I looked, just a fraction less lift, which could make the difference between needing pockets or not, but it's not anything magical cam wise, just like a BD13.5 sort of thing, but if it makes the difference between contacting valves/pistons or not it's serves a good purpose.
Personally I'd always use a reprofiled cam over a new one, as it's already work hardened, the astra engine I'm building is running a pinto profile for example on a reprofiled cam, not had a single issue in 25 + years with them.
tabetha

 

Tab, read my post, i said on the RIGHT spec NOT his Spec and cams can make 100ft/lb difference, i thought you were clever?

 

Didn't Cossie4i make around 70-80ft/lb iirc on the ABO7 ??

 

So msd won't do a off the shelf chip for this cam?

 

Few graphs lol

Standard Inlet Cam First



Then with the AB07 fitted.


Steve

 

Very impressive Steve, amazing what a CAM can do hey Tab...

 

Same boost pressure as well.

Also the cam timing was spot on for the Standard cam.

Steve