- Local time
- 11:34 PM
- May 20, 2016
- Reaction score
- okla. 74021
I had dual 3'' dumped on both my 400sbc , worked perfectly , slowed with full exhaust !Don't mean for this to be an argument thread... however I have heard 2 different opinions on this.
I have a 400 engine with aluminum RPM heads. I bought 1 3/4" TTI headers...
I've read on forums to go with 2 1/2" exhaust and H-Pipe for a lower tone. 3" is overkill and you lose low end torque.
The Mopar shop that I go to said, since I have the 1 3/4" headers I should open it up after that to 3" exhaust with an X-pipe.
I just want tti ask people on here what there experience has been and if they experienced loss of torque going to 3" exhaust.
Since this is a 400 engine, even with a small cam and RPM heads (of course I don't know for sure) but it can't be really more that 350hp.
Thoughts on this?
Have 3 1/2'' dumped on my 68 505'' fastback...