Header question

[1998silverbird]

Well I have the nortorious RKsport headers.. They have a 2 1/4 collector and 2 1/4 y-pipe.. Has anyone upgraded to a 2 1/2- 3inch collector and y-pipe?? [img]graemlins/popcorn.gif[/img]

[99v6cam]

3 inch collectors would be huge, even a full 3 inch y pipe is big, the only 3 inch part of the pacesetter ones are where the two pipes merge together on the y pipe.

[BLLDOGG]

3" is way way way too big

[1998silverbird]

Originally posted by BLLDOGG:
3" is way way way too big

Now why is that?? has anyone had a 3 inch y-pipe?? The LS1 and LT1 guys usually run 3 inch y-pipes and they put down good number with them..

[98Camaro3.8]

Originally posted by 1998silverbird:
The LS1 and LT1 guys usually run 3 inch y-pipes and they put down good number with them..

They also have V8s.


Pacesetters are 2 1/2" collectors, with a 3" out y-pipe.

[98FBird]

yea... there is no replacement for displacement...

3" exhaust is all good and well, I run a full 3" setup. Mine is just the Pacesetter 3" Y to the TSP Rumbler, and that rund and sounds great. Anything bigger and I'd seriously be loosing backpressure and low end torque. I think the Pacesetters are a better header for the $$, but they all have issues and drawbacks. You might want to replace the cat with a cutout for track and loudness, then run a good catback system from there. IMHO...

[99v6cam]

Originally posted by 98FBird:


3" exhaust is all good and well, I run a full 3" setup. Mine is just the Pacesetter 3" Y

Originally posted by 99v6cam:

the only 3 inch part of the pacesetter ones are where the two pipes merge together on the y pipe.

[1998silverbird]

Originally posted by 98Camaro3.8:
</font><blockquote>quote:</font><hr />Originally posted by 1998silverbird:
The LS1 and LT1 guys usually run 3 inch y-pipes and they put down good number with them..

They also have V8s.


Pacesetters are 2 1/2" collectors, with a 3" out y-pipe. </font>[/QUOTE]And whats your point.. Backpressure is backpressure.. I want the most free flowing exhaust on my car.. Nitrous is there to gain back the tq that I loose from backpressure.. My RKsport headers have a 2 1/4 collector with a 2 1/4 y-pipe.. That is too small for me and besides they leak most of the time too.. I want to weld in a ball flange like the pacesetters have with a 2 1/2 collector and make a 2 1/2 inch Y- pipe.. I dont see how you loose tq from going to 3 inch pipes.. I dynoed with a 2 3/4 inch cat back and put down 176rwhp and 210rwtq and when I put in my 3inch cat back and 3 1/2 inch tips I dynoed 180rwhp and 215 rwtq.. And I also gained hp and tq throughout my power band..