Maybe I'm just overlooking a write-up on it and cannot find what I'm looking for.

So I've read that you will lose some torque when you install LT's because they are larger. Also have heard that running true duals makes you lose torque. So you have to run an ORY. Yet i hear of people running X and H pipes. What's the pros and cons or each, which is better, and what's the purpose of all this?

 

the deal is all based on the diameter of the pipe
smaller primary's like 1 5/8" and collectors like 2.5" build more velocity without having to wind up the motor, and that makes for a header more effective at scavenging at lower rpm. and same for the opposite, headers with larger primary's like 1 7/8" and 3 inch collectors wont scavenge as well at lower rpm due to less exhaust velocity in the headers and collector, but they will out perform at upper rpm. the choice all depends on your intentions with the vehicle. x and h pipes help to balance the engines exhaust pulses and can help with scavenging between left and right cylinder banks, an x will be more effective at it than an h though.

 

So if you want more low end torque, like you would out of a 4.8, you'd go with smaller primaries and collecters?

 

It would depend on your setup too, how much air you are pumping through it.

 

as in N/A vs. T/A?

well I plan on staying n/a because getting several thousand bucks while still in school is HARD

 

not sure what the term t/a refers to but i can bet you meant f.i., to an extent if you were f.i. you would want to step up to a little larger exhaust system. but for n/a i think you have the right idea.
there is another way that im sure you will see more of, and that is to set up the engine to run higher in the power band. you could go with a little bigger set of headers, cam the engine to build more upper rpm power, run a higher stalling torque converter, and lower rear gears, and you will basically skip right over the part where you would need low end torque. but driveability can become a problem (this is where a good tune comes in play) and if you plan to tow with your truck you may be limited, gas mileage may also suffer a little.

 

I meant turbo with the t/a you're right.

Thanks a lot.

 

I meant turbo with the t/a you're right.

Thanks a lot.