So, now that my engine is done, I need to work on the rear. I'm swapping the 2.73s for 4.11s, but also, would like the rear to look a *bit* more aggressive.

Then I remembered that my exhaust guy said it would be too hard fitting 3 inches over the rear axle, and we settled on ending the exhaust with a glass pack and a downward angle just before the rear axle. Well, it's a tad too loud for a DD imo, and would definitely like to go back to the original plan of putting the 3 inches over the axle, and maybe into a 1 in, 2 out muffler.

I figured that maybe if I raise the rear an inch or two, that would be plenty of clearance for the exhaust, and would make the rear look a tad more aggressive.

Anyone ever seen or done this? Any negative side effects? I figure with only 1 or 2 inches it wouldn't be dramatic enough to look bad, but I can't know unless I see it.

 

A 3" isn't an issue.

UMI also makes a panhard relocation kit for added exhaust room: 2024.

JamesC

 

If he's referring to a dual 3" pipe, that might be an issue.

But a single 3" is factory sized and even 3.5" and 4" single exhaust systems fit if they are done properly.

No reason to raise the car, honestly...

 

What? My new exhaust looks like a monster compared to what was stock. That can't be right.

 

IIRC, there was an OE 2 1/2 and a 2 3/4 (often called a 3). My Hooker 3" fits without issue.

JamesC

 

My obx 3" fits no issues

 

If you have a 305 TBI, the 2.25" exhaust would look tiny compared to a 3" one.

I have a 3.5" Mufflex cat-back on my Camaro, it is lowered and never had any issues at all.

 

Now that I think about it, my LG4 was equipped with the 2.25. The after market was 2.5, and the L69 was 2.75 (which made the original look pretty scrawny).

JamesC

 

I have a Hooker 3" on my car; fits like a glove. No raising required. Fits exactly in the stock location.

I'd STRONGLY suggest a boxed-set approach from a major mfr like that, as opposed to a "custom" muffler shop setup.

 

Yea, I had the 305 tbi before I built my carbed 355.

Can you buy a full, 3 inch, "headers to y-pipe to straight over the axle to catback" that fits with aftermarket headers? I have hooker shorties, with one side different to clear the clutch slave cylinder.

 

Yes. Hooker 2055's with Y-pipe (Jeg's 520-2055). Catco high-flow converter (Summit CTO-9118). Hooker catback (Summit HOK-16823HKR).

The above is direct fit--no modding, cutting, bending, etc.

JamesC

 

Yup.

I have SLP 1¾" headers with their included Y-pipe, a similar Catco cat as James except mine is the 4-bolt-flange one, and I think that same Hooker part # he listed. Bolts up as good as if not better than stock.

Not sure about anything having to do with "slave cylinder" making any difference. The above fits fine with both a T-56 and a T-5. If however, you have some random headers that you already know fail to fit the car, all bets are off. Might be a good idea to start over in that dept with something that actually fits the car, and then exhaust that fits the car will pretty much be a slam-dunk certainty that they'll fit that too.

As far as buying something off-the-shelf to fit whatever random headers you now have, that's impossible to predict. My gut however doesn't feel warm or fuzzy about it.

 

Find a new "exhaust guy." if he can't fit a stock sized exhaust on the car then he's either incredibly lazy or incompetent.