77snowwheeler
Patriot
I have three inch from headers, no cats. I was going to go stainless but the shop had a hard time getting enough for new build. I have a cross over and out the body. I’ll get pics hopefully tomorrow.
CK5
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Exhaust ideas
- Thread starter shond100
- Start date
4X4ForDad
Registered Member
Magnaflow with 2.5 in diameter exiting at the rear bumper.
For safety reasons, never exit your exhaust straight out the back of a Blazer. The exhaust can/will come back inside the truck. I actually happened to a family in California where all the members sitting in back had to have medical treatment for CO poisoning. It was years ago and I cannot find a link to any article now. Though searching for the story I noticed it is the same deal for 4Runners, Broncos, Etc. Just play it safe.
77snowwheeler
Patriot
Especially if the back window is open.
ArizonaK5
1/2 ton status
I just had this done to my 76 K5. Dual 2 1/2" to a 3" single. Went with a MagnaFlow 2 to 1 Muffler. It sounds amazing. No drone at all on the freeway.
thats my plan for my burb but down the driver side
I wonder if keeping duels is better like I have now and just ditching the headers for stockish manifolds from hooker? but that looks so clean, it may have convinced me to go that route but have it kick-out the driver side
ArizonaK5
1/2 ton status
I went passenger side to keep the music to that side. Most Diesels do the same. It was the best route and to keep it tucked up on my K5.
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I believe typically OEM exhaust exit side is determined by the opposite side of the gas tank/filler neck. With k5, tank is in the middle, but filler is on right side, so exhaust routed out driverside. I believe this logic is true for most all newer trucks as well
hey! where's the catymastic conversionator???????!
even with the cat, and with the exhaust turned out of the rear corner... I still get fumigated if the rear window is down.
ArizonaK5
1/2 ton status
I hear you on that. My Blazer came with dual exhaust originally
@ArizonaK5
Where did you get the mud flaps? I'm not sure if in AZ we need them by law, but they do look nice...so im just wondering
Where did you get the mud flaps? I'm not sure if in AZ we need them by law, but they do look nice...so im just wondering
beags86
Eastbound and Down
I have purge welded.
You don't need it for a exhaust.
Nor will you probably be able to find anyone to do it for you unless your willing to go to a super high end shop and pay major bucks
Can you weld? I'd build the system yourself if you can.
Pretty tough to find any shop that's able to do 3 inch stuff.
I did 3 inch on my chevelle in stainless. No one would touch it. So I just did it myself. Bought all the pipe online and welded it up myself.
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I'm no expert, but I believe the purge is more important with thin metal and butt-welds. The work I've done used overlapping joints on thicker material like 16 gauge (I used no purge and never saw any problems). With the overlap, the shield gas from the gun is getting into the joint as you go, so any sugar would be on the inside of the inner pipe, not in the weld.
Fairly certain my burb came with duals factory. It has hangers and heat shields on both sides.
The guy I got from was convinced by an idiot smog tech that this truck has to have catastrophic converters, so he had duels put in. I think the exhaust was duel and cats were added.
I switched to a single down Dr side
The guy I got from was convinced by an idiot smog tech that this truck has to have catastrophic converters, so he had duels put in. I think the exhaust was duel and cats were added.
I switched to a single down Dr side
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ArizonaK5
1/2 ton status
Mud flaps are NOS. Bolt on. Arizona doesn't care. Just cool. No other reason.
ArizonaK5
1/2 ton status
My Blazer never had cats. Just a air pump and egr.
My 77 didn't even get and egr. Just air pump
