PowerPipe Exhaust for slant/6
Track testing has been done on the stock bore 225, 3,250 pound street car.
PowerPipe-DC vs PowerPipe-PF. I have been running this style for a while. Bringing the ET from 20.2 seconds to 16.3 with a bunch of bolt ons.
Now running this style. PowerPipe-PF These are equal length and bend design front and rear!!!
The only change made to the car was the exhaust system. Now with my X and Y pipe design with my 2 chamber muffler. I also changed the pipes to 2" from the headers back. It was 2 1/4" all the way back.
Before I went out we also mounted my 63-76 A-Bodie's frame ties, yes we added around 50 to 60 pounds to the car? Adding weight slows you down right?
Without any change at all, first pass was slower 16.5 breaking up on the top end, it has never spit and spuddered like that before.
First adjustment backing the timing from 28 to 23deg total car droped to 16.1 faster than ever.
Going the right way so, I backed it off a little more to 18deg car went 15.9 this was the first 15 second pass!!! After running two more times without adjustment.
Here I backed it down to 12deg for my last few runs, I,m glad I did cause the car droped to 15.8 and picked up 3mph. Almost a 1/2 of second gain with the new exhaust and added weight.
I like the PF design, easy to install, looks cool and worked for a gain over the second design I did. That is what I was shooting for. The next test, I will change the PF design with the true flow design.
This was only a test, I repeat this was only a test subject to change per vehicle if the whole system was not installed. :smile:
Track testing has been done on the stock bore 225, 3,250 pound street car.
PowerPipe-DC vs PowerPipe-PF. I have been running this style for a while. Bringing the ET from 20.2 seconds to 16.3 with a bunch of bolt ons.
Now running this style. PowerPipe-PF These are equal length and bend design front and rear!!!
The only change made to the car was the exhaust system. Now with my X and Y pipe design with my 2 chamber muffler. I also changed the pipes to 2" from the headers back. It was 2 1/4" all the way back.
Before I went out we also mounted my 63-76 A-Bodie's frame ties, yes we added around 50 to 60 pounds to the car? Adding weight slows you down right?
Without any change at all, first pass was slower 16.5 breaking up on the top end, it has never spit and spuddered like that before.
First adjustment backing the timing from 28 to 23deg total car droped to 16.1 faster than ever.
Going the right way so, I backed it off a little more to 18deg car went 15.9 this was the first 15 second pass!!! After running two more times without adjustment.
Here I backed it down to 12deg for my last few runs, I,m glad I did cause the car droped to 15.8 and picked up 3mph. Almost a 1/2 of second gain with the new exhaust and added weight.
I like the PF design, easy to install, looks cool and worked for a gain over the second design I did. That is what I was shooting for. The next test, I will change the PF design with the true flow design.
This was only a test, I repeat this was only a test subject to change per vehicle if the whole system was not installed. :smile:
