the dream turbo/street cam

[PuckPuck]

Hypothetically speaking, I'm able to get a cam ground to any specification I desire....

What in your humble opinions would be a perfect turbo/street cam. Engine must still idle smoothly below 1000rpm, and be ready for an onslaught of t3/t4 goodness on 3L of displacement.

[warmonger]

Should be no problem, turbo cams have little overlap therefore good idle...generally speaking.
It is radical NA cams that can't idle.

[CSVT#49]

It is radical NA cams that can't idle.

Yea like my camaro

Doesn't even create enough vacuum for my power brakes.

[PuckPuck]

what about lift, or duration? Should they get stretched out, and how far.

[DemonSVT]

what about lift, or duration? Should they get stretched out, and how far.

Intake opening at or a touch before TDC. (before TDC increases drivability and throttle response)
Minimal to no overlap (some is actually beneficial)
Fast ramps but normal lift specs
Average duration.

The exhaust cam can be of longer duration to help expel the extra gasses. It can even open a touch earlier (thus longer duration) to help expel the previous "spent" gasses in exchange for fresh air/fuel charge. This also sends extra energy into the exhaust piping to spool the turbo.

Duration is just an afterthought measurement of your valve timing points. The valve timing points are what drives any camshaft profile.

[tigerbalm]

How much does it normally cost to get a cam ground to spec? If you had to guess.

[Smokeshow]

What are the stock specs?

[lubas79]

what do you think, anyone has done it, is it good, does it make sense

http://cgi.ebay.com/ebaymotors/99-02...QQcmdZViewItem


thank you

[DemonSVT]

Ouch! Does that kit really make you run a smaller P/S pulley???
If so, that will really crank up the parasitic drag above 4000rpm. The P/S pump is already the unit with the greatest FEAD drag. (A/C not running of course)
Also how well/long will the pump survive being spun that much faster?

[warmonger]

There is room to install custom crank pulleys, why not just install a cogged crank pulley since the crank is the strongest item and then use an idler or tensioner setup?

Hell, steal one of the newer electro-hydraulic power steering systems from a different newer car and ditch the PS pump entirely.