Are the cat back exhausts the same in 84-87?

[ROBCAR]

Does anyone know if the cat back systems are the same from 84 to 87? I have seen some kits say fits 84-85-86-87, then others say 86 and 7 only. I am looking for a cat back system for my 85.

 

[bobs84ttype]

if i recall the flange on the cat is slightly different on 84/85 compared to 86/87. some kits come with test pipe. replace flange on cat with the the test pipe flange.

 

[O SO LO]

84-85 on right, 86-87 on left...
86-87 cat doesn't have a flange on the front as shown in the pic- it is a slip fit!!

 

[TurboRegal84]

The 86/87 system posted above is not stock. 84-87 have the single muffler behind the rear when sold new. The major difference is the down pipe/converter connection. Any good muffler shop could make a 86/87 system fit on an 84/85.

 

[O SO LO]

The 86/87 system posted above is not stock. 84-87 have the single muffler behind the rear when sold new. The major difference is the down pipe/converter connection. Any good muffler shop could make a 86/87 system fit on an 84/85.

That is correct, should have mentioned it is a Hooker exhaust system similar to 86-87 exhaust

 

[alec296]

i have the hooker kit on my 84 but i also have an ATR downpipe and 87 cat
really opened up flow

 

[ROBCAR]

Thanks guys, I have the stock setup with the single muffler above the rear axle. I wand to go with the dual mufflers with the stock outlet location. (behind each rear wheel)

 

[ROBCAR]

i have the hooker kit on my 84 but i also have an ATR downpipe and 87 cat
really opened up flow

Looks like the hooker kit exits strait out of the back under rear bumper. Is this correct?

 

[Beaber]

Thanks for the info i was curious about this myself. I believe that I'm going to go with a homemade all stainless setup, exiting before the passenger tire.

 

[alec296]

Looks like the hooker kit exits strait out of the back under rear bumper. Is this correct?

mine doesnt exits out side sounds like your looking at a monte ss exhaust

 

[Beaber]

Oh. Mine doesn't either, I was saying that's what I'm going to make it do.

 

[dr_frankenstein]

Oh. Mine doesn't either, I was saying that's what I'm going to make it do.

how on earth did you choose your screen name?

 

[Beaber]

Just typed it in and hit enter. Lol. It's my last name.

 

[dr_frankenstein]

Just typed it in and hit enter. Lol. It's my last name.

ok.... cool. i was worried you might be one of the super fans..... didnt want to offend with my smart a** comments.

 

[O SO LO]

Looks like the hooker kit exits strait out of the back under rear bumper. Is this correct?

The Hooker exhaust in the pics posted above- is on my 84 GN and exits behind the rear tires,
same as the exit of the original exhaust

 

[ROBCAR]

The Hooker exhaust in the pics posted above- is on my 84 GN and exits behind the rear tires,
same as the exit of the original exhaust

Yea, Here is the link. Looked like they were strait out the back but after a closer look they do seem to be angled out of the back behind the rear wheel.

http://www.holley.com/16810HKR.asp