Re: cam upgrade for 85' 4ksq

["Ken Keith" <Ken.Keith@SpecialDevices.com>]

"Cory Meyer" <cmeyer@jumpgate.net> wrote:
> 
> I am planning on upgrading my cam in my all stock 4ksq.  Since $500 seems
> a little high I am trying to find a cam out of a 5cyl turbo.  I have
> heard that this works.  The hp gain is only about 10 - 15.  Will my hp
> gain be affected with a new cam since I have not yet put the larger
> exhaust on it yet?  Is there anyone else who has tried this sort of
> thing?  Anything I should really watch out for?

Where did you get that 10-15 hp figure?  I'm curious.

I have a "$500" cam in my '86 Coupe GT, and I would say that it may have 
only added 10-15 hp.  I'm no seat of the pants hp meter, but it wasn't 
tremendous.  10-15 hp is in the neighborhood of 10%.

Do the turbo cams have a lobe for the vacuum pump?  I don't think they 
would, since the turbos dont have vacuum pumps.

If you don't have exhaust, you might want to try that first, before the 
cam.  Get the cam too, but I would do the exhaust first.

When you replace the cam, it's probably a good idea to replace the 
lifters, but that's up to you.  Definitely replace the water pump and 
timing belt tho', unless they're confirmed new.  You're getting in there 
anyway, so it really makes sense.

Ken