Project 68 k10 LWB..aka "The Hulk"

[cmabolt]

Originally Posted by First c10

The picture below is what I was thinking. Please don't. I know I can't draw lol.

I understand the idea of high velocity in a small pipe with back pressure verse larger size less back pressure and Low velocity. The above chart reads in cfm flow and hp. So single 3" can flow 747cfm and 339 hp. That would say that the 243 heads I have on the motor need to flow 373.5 cfm each. Which I don't think this motor can do NA. The hp number is what has me puzzled. My 08 Duramax has 3.5" after the turbo and before the cat and 4.5 after thru a single muffler (can't remember the brand of the catback system ) motor is 325 hp 600+ torque stock. Probably not the same since it's an oil burner.
I am just thinking it would be different. Maybe put a large nasty chrome tip on it.

I think this will look pretty cool. Large single pipe on the back. It will probably end up flowing better than duals. Lookin forward to seeing that one put together.
Chris

[First c10]

Originally Posted by cmabolt

I think this will look pretty cool. Large single pipe on the back. It will probably end up flowing better than duals. Lookin forward to seeing that one put together.
Chris

It will be different for sure...
so what muffler would you recommend? Size? 3" or 3.5"?

[cmabolt]

Originally Posted by First c10

It will be different for sure...
so what muffler would you recommend? Size? 3" or 3.5"?

Same size as your extension pipe from header/manifold to muffler. Once you come off header and go to single pipe, it should stay the same the rest of the way. There is some info about stepping up, but none I've found that
shows proof of a performance gain. I am a flomaster guy so that's what I would get.

Let me know how tough the learning curve is with HP tuners. I use computers every day and have been thinking about buying and getting to know the ins and out of tuning the LS motors. Like anything, I'm sure it's a matter of understanding the user interface, but have never heard how difficult that is
self teaching.

Chris

[First c10]

Originally Posted by cmabolt

Same size as your extension pipe from header/manifold to muffler. Once you come off header and go to single pipe, it should stay the same the rest of the way. There is some info about stepping up, but none I've found that
shows proof of a performance gain. I am a flomaster guy so that's what I would get.

Let me know how tough the learning curve is with HP tuners. I use computers every day and have been thinking about buying and getting to know the ins and out of tuning the LS motors. Like anything, I'm sure it's a matter of understanding the user interface, but have never heard how difficult that is
self teaching.

Chris

Chris thanks for the information that is what is great about this site a lot of info. I like the sound of flomasters also just not sure how a single muffler (of any kind) will sound so need to do some research.

I paid about 400$ on the C10 truck tune and it still needs some trans tuning so I don't want to spend anymore money to someone else. figure I will spend it on learning material....All the tuners on this site say read ,read, read, and read some more!!!
so now I just need to learn to read!!!