Mismatching cams
 

my friend was telling me about how u can mis matching stock honda cams and make more power he was saying itr on the intake side and gsr on the exhast side

Re: Mismatching cams
 

Confused, are you asking if this can be done? If so yes. Will it yield more power/better torque curve, that depends on quite a few things (more importantly what camshafts you have now as you may be downgrading).

Re: Mismatching cams
 

Just remember, what goes in must come out. If you have mismatched flow specs (that includes duration too) on the intake and exhaust, you can restrict flow. Other than that, there is no problem with mixing and matching. Aftermarket cams often have different profile alterations from stock on the intake and exhaust cams, so they're already mis-matching (if you can call it that). Really though, you know exactly what you're getting if you go with a pair that already works well together, and mixing cam profiles may only work with certain types of mods because of the differences in flow characteristics. This also depends on what head, block, intake manifold, etc., because all those combinations will net different results with different cam profiles.

This is really something that should be played with on the dyno, so you can see whether you're gaining power somewhere and losing a bunch somewhere else, etc. You can't really just say that using two different cams will give you power, because that's not how engines work. There are too many variables to be able to make generalizations about all mods and all engine configurations.

Re: Mismatching cams
 

Fabrik8 makes a good point.
To elaborate some....
That can restrict the exhaust flow. What does that mean? Well, it can mean less top end power. This can be especially true if you're running a turbo near the top of it's flow range, or using a high-revving N/A setup.
Specifically, if you look at what Crane considers a turbo-grind, that's almost exactly what you'll find. A stock (or slightly more agressive than stock) exhaust cam, with a much more agressive intake. As a general rule, on a Turbo setup, that allows more intake air, which then creates a higher exhaust velocity. It can spool a turbo faster, but comes with the possibility that it can also hurt flow on the top-end.

For a naturally aspirated motor, it's allowing more air on the intake side, but it's leaving at a higher velocity. This means if there's any flaws in the exhaust system, they'll be much more evident, and you may actually lose power. If the exhasut is designed perfectly, it may enhance power even more.... On the Intake side, having it open longer could cause the air to stall. This would be especially true of the intake/induction system were unable to provide enough air to sustain the motor..... Depends on how well everything is optimized....
WAY too many vairables in that scenario to predict what it will do.

Now, more specific, on a Honda engine, with I/H/E, and the ability to tune, yes, it should make more power than stock GSR cams. It should spool faster for a turbo setup than Stock GSR or ITR cams. It may not make the peak #'s a full set of ITR cams will, but will likely enhance mid-range slightly.

Re: Mismatching cams
 

its just something i heard supposely a friend of a friend did it with itr cam on the intake and gsr on the exhaust and supposely made more power and was juust wondering if anyone had heard something similiar i have set of itr and gsr right now

Re: Mismatching cams
 

Go get dyno'd, swap cams, and get dyno'd again. That's the only way to tell.