The Stovebolt Site Forums The Shop Area The HiPo Shop glaspack mufflers

Hello Stovebolters, I'm running a 235 engine in my 1936 Chevy pickup & I installed a set of steel headers and a pair of 30" smittie mufflers & the sound is not what I wanted: What I have is a Whoop Whoop sound & what I want is a Rorrowww, a deep mellow tone sound, LOL, Can anyone tell me the correct mufflers to get for the sound that I want? I appreciate your advise. Thanks, Oldred

Do you have full length tail pipes that run out the back of the truck?

What diameter exhaust did you use?

You might want to got to YouTube and search for "235 exhaust" audio clips, the deep mellow sound you like may not be at all what the next fella considers deep and mellow.

http://www.youtube.com/results?search_query=%20235%20exhaust&sm=3

Mufflers for a CJ7 with a 304V8 (also used on some years of Cadillac with the 500) will give you the sound you're after.

Sounds like they are in backwards ....Look inside you will see small bumps , where u see the holes in the bumps that's the inlet , no holes outlet .... correctly you will hear a deep throaty rumble , backwards you will hear a crisper bark-like sound that will be a little louder .

Longbox55 in your youtube clip Ridin' with LB Is that the set up you were talking about? What size was the inlet, what size outlet, and what kind of mufflers? I am running Fenton's both intake and exhaust. Was that dual mufflers and was an x or h pipe used? It did not seem too loud for the cab.

Yup, that's the one. It's 2" on both the inlet and outlet. I don't recall the part numbers, but the mufflers are Walker stock replacement, nothing fancy. The balance of the system is 2" Cherry Burrell stainless, with 2 1/2" tips. It can be a bit noisy if I lay in the throttle hard, but just normal driving it's really not too bad.

I have 2 glass packs with steel tips; it actually sounds pretty darn good.

Longbox55,

I like the sound of that your 235! Nice lookin' truck!

Chris

Bill B. - what is your drivetrain setup on the 55? Tranny & rearend? Seems like your not in a hurry to get to 3rd and engine is not wound up at all at 50 - 60mph. Are you happy with it?

I have an SM319 overdrive trans and 3.90 gears in the rearend. I also have a taller tire that stock, 30" vs the 27" stock size. It's somewhat hard to hear it happen in the vid, but I did let it drop into 2nd-over before I went for 3rd-over.
I'm very pleased with the combo, I can run highway speeds without getting over 2700 rpm (approx 75 mph) and still have some to spare.

I think having the muffler as far back as possible (along with a larger pipe, maybe) contributes a lot towards reducing the "rap". I have a three chamber (?) flowmaster I got off a truck I bought on my 250 six right now with it all the way the end of the pipe, and it has a real nice deep diesel-like rumble with no "rap" (actually rattles all the windows and other loose objects hanging on the truck at 1,000RPM or so). I may post a little clip if I have one.

Also: "What I have is a Whoop Whoop sound..." lol, I love it.

Here's a clip: