Anybody build there own exhaust using these?

[Mrturner1]

Originally Posted by Grumpy old man

Where would you need to use these on your exhaust ?

I'm planning for 3" and I'm not sure really how I'm going to route it yet. I was thinking of cutting a hole in the crossmember to keep the pipes high up off the ground but I don't know how I feel about that yet

[Grumpy old man]

3" is too much try 2 1/2 , lots of guys cut thru the cross member

[72kool]

Building your own exaust can be a lot of fun and rewarding. There are a lot of different options on how to route it on these trucks depending on what drivetrain you have. Before you decide what your going to do, I would evaluate everything to make sure you get the most from your exhaust. What engine do you have? What is your goal for this project? 3 inch may be too big and disappoint you.

[Mrturner1]

Originally Posted by 72kool

Building your own exaust can be a lot of fun and rewarding. There are a lot of different options on how to route it on these trucks depending on what drivetrain you have. Before you decide what your going to do, I would evaluate everything to make sure you get the most from your exhaust. What engine do you have? What is your goal for this project? 3 inch may be too big and disappoint you.

It's a 70' c10 LWB, lowered just an inch or two but may go lower later. 10-1 355cid big cam (comp 280H) big stall (3000), th400 and 3.73 mini spool, Holley 750 DP, basically a fun truck to roast tire in when I get home from work on the weekends, and one day when I feel that the suspension and brakes are safe enough I'll take it to the track. Ultimate goal is to get her into the 12's, I'd be a real happy camper if I did that!

Watched quite a few dyno tests and all they changed was the pipes, 2.25" lost some top end to the 2.5" and 3". The 2.5" and 3" performed almost exactly the same except the 3" made a few more ponies waaaay up top. The 3" did not loose ANY low-mid range to either the 2.5" or 2.25". All this was done on a 400hp 9.5-1 383 stroker

I'm real tempted to build an X-pipe too, saw some great results from those on SBC's

[MikeB]

Originally Posted by Mrturner1

The 3" did not loose ANY low-mid range to either the 2.5" or 2.25".

Probably because the best exhaust pipe you can have behind long tube headers is NONE.

[Billhilly]

Yes. I put them right behind the headers, mine are about 7" long on a 2 1/2" pipe set up. I've only done about 4500 miles, but so far so good. Lots of modern cars/trucks have them. Hoping to isolate the headers from any excessive loads.

[MikeB]

Originally Posted by Billhilly

I put them right behind the headers, mine are about 7" long on a 2 1/2" pipe set up. I've only done about 4500 miles, but so far so good. Lots of modern cars/trucks have them. Hoping to isolate the headers from any excessive loads.

Good idea. Nice chassis.