I recently got my grandfather's truck for my son. Naturally he wants it to be louder and deeper sounding than it is now(all factory original)
I am looking for an inexpensive DIY way to make it sound good but stay legal, Don't have a welder or a shop so it needs to be clamped and doable in the driveway

 

another question:
Truck has 78000 miles on it but it sat up for a couple of years
I am getting oil and smoke through the pcv and the truck smokes when underpower but not at idle.
I did the motor flush oil change any other ideas?

 

If you have to do emission inspections, get a high flow catalytic converter and an aftermarket muffler like a flowmaster 40 series or a more generic version that is cheaper.
The other, less legal option if you don't have inspections is to just remove the muffler. The cat is a pretty good muffler by itself.

If the truck sat for a couple years and didn't get run, the rings were probably set in the block and when it got started again it broke them loose so that was probably a poor decision.

 

I would go with a high flow cat and aftermarket muffler like Dave said.

In my opinion, don't get glasspacks, those are so obnoxiously loud.

 

+1 Take a sawsall to it just behind the cats, drop the whole rear section and replace it with a turndown. Believe it or not that will produce a nice rumble at idle but it'll still be remarkably quiet driving around.

 

truck sat still but was ran some at idle probally did not crank for around 8-9 months.

 

I agree, don't get a glass pack. They might be cheap, but you pretty much get what you pay for there.
If it was cranked here and there and left to idle, if it didnt get warm and didn't get oil in the cylinders well, it could have set the rings there.

 

Cut it after the cat, get a 45* bend and a length of pipe from the parts store with a slant cut tip and kick it out the side in front of the rear tire. Quick simple, looks and sounds good.

 

Actually when my stock muffler finally came apart, I cut pipe off, slipped a cherry bomb on it and made a 90* bend out the side(about middle of bedside). It has a nice rumble going down the road, but not obnoxious. It's basically a resonator for the cats.

Since the tailpipe is short, you DON'T get that machine gun kelly rattle when you stomp on it. It would have to be quieter then just a cat? I don't hot rod mine, so it isn't a problem anyway. 1989 F150 302/aod.

I welded mine up, but you can slip/clamp it too.

 

it stopped smoking after being driven a couple of days so all is well

 

If keeping the stock cats, straight pipe or glass pack is the only way to get any sound out of it. I'd keep a tailpipe though. I personally hate the hollow tin can sound of Flowmaster. With stock cats, a Flowmaster will be barely louder than stock. The factory cats do a good job of muffling the exhaust. Rather than a cheapo glasspack, get a Dynomax bullet muffler.