Just about ready to fire my project truck up. Heres what I have:

351 cleveland 4V heads, 600 cfm carb (vacuum secondaries), c4 transmission (B&M shift kit), tci 2500 stall converter, 411 trac lock 3rd, mild street cam.

My old cleveland from the donar truck had 2 1/2 exhaust with flowmasters that exited in front of the rear tires. With the application I described would this truck benefit in the least from cutouts? If I'm going to add them I might as well do so while I'm getting the exhaust welded up.

Thanks

 

I've heard a few friends mustangs with cutout's. They are very loud. I personally like the sound.

 

When one considers the affects that a full exhaust has on the calibration of a carb, we can determine that a cutout will have no positive affects on performance. Matter of fact, if the carb is tuned properly, then the exhaust is opened up the calibration is no longer any good. This could have ill effects on the overall performance.
Now you can calibrate for the open condition, but this means that the calibration will be wrong when the exhaust is closed. So where is the real performace? There is a fine line, and a balancing act, but seems much easier to tune for one condition and keep all of the variables out of the equation.
As an example, I see many vehicles uncork the mufflers at the track only to ET slower than with muffler left on. Carb calibration is funny that way.

 

Instal the cuttouts. If you don't like them, don't use them.

 

While this may be true, the cutouts are more for showing off anyway. When you want performance, left them capped, and open them when you want to make some noise.

 

Thanks for the comments. My real interest was in performance and some intimidation. I was planning on adding dumps with electric cutouts. Sounds like thats $400 I should probably just invest in my stereo equipment.

 

Screw those electric cut-outs, just buy some manual ones that are wire operated for like 50 bucks. I think they're fun when a ricer pulls up next, open them up and drown his fart can out.