Exhaust Diamater

[CC69Rat]

I'd do 2.5 to the muffler, 2.25 the rest of the way. (just for the sound) 2.25 will have sort of a wraspy sound to it where 2.5 would sound more mellow like it's breathing better. 2.25 would probably flow ok, but 2.5 I think would be the ticket. I wouldn't do any more than 2.5 for the backpressure. If you go too big you'll loose some torque on the bottom end.

Just my .02.

[Tmwoodall]

Originally Posted by CC69Rat

I'd do 2.5 to the muffler, 2.25 the rest of the way. (just for the sound) 2.25 will have sort of a wraspy sound to it where 2.5 would sound more mellow like it's breathing better. 2.25 would probably flow ok, but 2.5 I think would be the ticket. I wouldn't do any more than 2.5 for the backpressure. If you go too big you'll loose some torque on the bottom end.

Just my .02.

Thank ya sir, exactly what I needed. Guess it will be a good time to get the Spintech's or magnaflow, or 50 series, or... Ugh. More youtube clips in my future.

[OC 72]

Video of my exhaust.
2.5 to muffler....2.25 to rear.
With Flowmasters 40's.

1972 C10 Exhaust - YouTube

[Tmwoodall]

Originally Posted by OC 72

Video of my exhaust.
2.5 to muffler....2.25 to rear.
With Flowmasters 40's.

1972 C10 Exhaust - YouTube

Ha. I have actually watched yours a few times on youtube. Sounds great. I have a FM40 on my Jeep (I6, totally different sound obviously), and had one on my F150, on the V8 ford it had a drone at highway speeds that I have heard you don't get with the Spintechs and Magnaflows. I want it to sound civil but throaty at low speeds, and nasty when you open it up.