This is not an official acoustic tab for the song. The tab that cbenagh posted is 
accurate. This is just something for acoustic or rhythm players such as myself who 
still want to play along with the song, and can't get that same distorted electric 
tone on the solo parts. So if you love this song and wanna strum along by a fire 
or in your friend's basement, this is the one for you! Listen to the song for the rhythm.

Chords used:
      F    Bb    Gm   Bb/G
e-|---1-----1-----3-----3---|
B-|---1-----3-----3-----3---|
G-|---2-----3-----3-----3---|
D-|---3-----3-----5-----3---|
A-|---3-----1-----5-----5---|
E-|---1-----1-----3-----3---|



Intro: F
e-|-------------1-------------1-------------1-------------1--|
B-|-----1-------------1-------------1-------------1----------|
G-|---------2-------------2-------------2-------------2------|
D-|-------3---3---------3---3---------3---3---------3---3----|
A-|----------------------------------------------------------|
E-|--1-------------1-------------1-------------1-------------|

F
Mama knew my mind would know the song
Mama knew my mind would know the song
Bb
Muscle holler and a moan
I muscle holler and a moan
                     F
Black chords in the night
F
Daddy burnt the dirt, but the seed survived
Daddy burnt the dirt, but the seed survived
Bb
Muscle holler and a moan
I muscle holler and a moan
                     F
Black chords in the night

  Gm
I know that old catholic tone
  Bb
I know that old catholic tone

[chorus]
    F
The heavy bells! The heavy bells!
          Bb
The heavy bells are tolling out a tune!
    F
The heavy bells! The heavy bells!
   Bb
Oh God, I felt that metal move!
Gm
You're gonna wake up! You're gonna wake up! You're gonna wake uuuuup!
                                              F (or intro)
Know the heavy bells, toll a tune for you too-ooh!

Too-oo-ooh!

F
Black sounds shake upon his folds
Black sounds shake upon his folds
Bb
Hear that nerve hound moan!
I hear that nerve hound moan!
                     F
Chop talkin' in the night
F
Blood and honey fixed into his beard
Chaser to the taste I've come to fear
Bb
Hear that nerve hound moan
I hear that nerve hound moan
                     F
Chop talkin' in the night

  Gm
I know that old catholic tone
  Bb
I know that old catholic tone

[chorus]
    F
The heavy bells! The heavy bells!
          Bb
The heavy bells are tolling out a tune!
    F
The heavy bells! The heavy bells!
   Bb
Oh God, I felt that metal move!
Gm
You're gonna wake up! You're gonna wake up! You're gonna wake uuuuup!
Know the heavy bells, toll a tune for you too!

[solo]
(I don't want to copy someone's material, so check out cbenagh's version for the 
solo, he's got it down!)

F
ALL HAIL, HEAVY BELLS!
ALL HAIL, HEAVY BELLS!
         Bb
OH-UH-AH-OHH-OHH-OHH!
OH-UH-AH-OHH-OHH-OHH!
F
ALL HAIL, HEAVY BELLS!
ALL HAIL, HEAVY BELLS!
         Bb
OH-UH-AH-OHH-OHH-OHH!
OH-UH-AH-OHH-OHH-OHH!
F
ALL HAIL, HEAVY BELLS!
ALL HAIL, HEAVY BELLS!
         Bb
OH-UH-AH-OHH-OHH-OHH!
OH-UH-AH-OHH-OHH-OHH!
OHH WHOA WHOA OHH!

He finishes out the solo by playing 6-5-3 on the G string 3x, then the D 3x, G 
string 3x, D string 3x, then finish the song by playing the intro, and that's it!