I'm stepping up and adding a 2nd kit. Right now I have a some Pacesetter LT's and I'm thinking about going to some TSP 1-7/8's LT's. I was curious what size headers you nitrous guys are using? I'll be hitting it with a total of 300. Is it going to be worth swapping to these?

 

You should get a measurable power gain from the swap.
The gain will also be dependent on the amount of restriction present down-stream from your headers.

Depending on how aggressive your tune is now, you may have to slightly lower your spark advance around the top of your gears.

 

I would go right to 2" headers, no need to buy them 3 times. LOL !

We gained almost 2mph going from 1 7/8 to 2"

 

2" would be over kill on a 347 I'd imagine. Or do you think it'd be worth it b/c I'm stuffing enough nitrous down its throat. HAHA

 

+1

hell yeah you'd see a gain. even 1 7/8" is on the small side for that size shot!

 

Or go with a set of stepped headers.. I went with kooks stepped race headers.