Exhaust Universal Mufflers

Universal mufflers are created for use on a number of different vehicles so they'll need to be modified before they fit snugly onto your 1980 GMC C2500's make and model. ... This means that universal fit mufflers could require professional installation.

Universal mufflers work fine on average cars but you have to find one that matches your inlet and outlet of your existing muffler. It also has to match in length and diameter. Then you have to cut off the old muffler and leave enough pipe in front of it so you can attach the new one.

A smaller muffler is going to give you a much louder sound than you would normally get with a larger muffler. The larger or longer the muffler, the less sound you will get. The smaller or shorter the muffler, the more sound you will get.Most popular mufflers do not restrict exhaust flow dramatically – and that includes chambered mufflers that are often wrongly accused of inhibiting exhaust flow and decreasing potential horsepower.

You can take your car to a muffler shop for a replacement, but installing a new muffler yourself is fairly easily and cost-efficient. To complete your muffler installation, you'll need a jack to lift up your car, a wrench, different sized ratchets, lubricant, and possibly a hacksaw.

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FLOWMASTER 52573
Please Note:

Some images might not represent the actual product

FLOWMASTER 52573 70 Series Muffler Mild Sound
for 1980 GMC C2500 ALL

$254.09

Save: $33.14
Sale Price:

$220.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8
 
Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 22 in.
28 in. Overall Length
Aluminized Steel
Not Direct Fit-Some Adaptation Required
 
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8 Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 22 in.
28 in. Overall Length
Aluminized Steel
Not Direct Fit-Some Adaptation Required
,
FLOWMASTER 52558
Please Note:

Some images might not represent the actual product

FLOWMASTER 52558 Super 50 Muffler Mild Sound
for 1980 GMC C2500 ALL

$212.69

Save: $27.74
Sale Price:

$184.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 12 New In Stock
EngineFit NotesFitment Notes
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8
 
Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 17 in.
23 in. Overall Length
Aluminized Steel
Not Direct Fit-Some Adaptation Required
 
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8 Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 17 in.
23 in. Overall Length
Aluminized Steel
Not Direct Fit-Some Adaptation Required
,
FLOWMASTER 842553
Please Note:

Some images might not represent the actual product

FLOWMASTER 842553 50 Delta Muffler Moderate Sound
for 1980 GMC C2500 ALL

$204.94

Save: $26.73
Sale Price:

$178.21

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8
 
Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 4 in. x 9.75 in. x 17 in.
23 in. Overall Length
409 Stainless Steel
Not Direct Fit-Some Adaptation Required
 
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8 Exhaust Muffler
2.5 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 4 in. x 9.75 in. x 17 in.
23 in. Overall Length
409 Stainless Steel
Not Direct Fit-Some Adaptation Required
,
FLOWMASTER 952548
Please Note:

Some images might not represent the actual product

FLOWMASTER 952548 Super 40 Muffler Aggressive Sound
for 1980 GMC C2500 ALL

$154.04

Save: $20.09
Sale Price:

$133.95

Estimated Ship Date: Today

In Stock - 21 New In Stock
EngineFit NotesFitment Notes
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8
 
Exhaust Muffler
2.50 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 13.5 in.
19.5 in. Overall Length
Aluminized Steel
 
1980 GMC C2500 ALL equipped with
7.4L V8,
5.7L V8,
5.0L V8 Exhaust Muffler
2.50 in. Offset Inlet/Opposite Side Offset Outlet
Case Dimensions 5 in. x 10 in. x 13.5 in.
19.5 in. Overall Length
Aluminized Steel