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Dorman 674-773 Exhaust Manifold Kit

Curated from 77 real Reddit conversations

Refreshed on: October 22, 2024

Dorman 674-773 Exhaust Manifold Kit

Brand: Dorman
Price: $89
Snoop Score:
7.5
Sentiment
6.0
Popularity
5.9
Technical
8.6

Snoop's Take

The Dorman 674-773 Exhaust Manifold Kit is a high-quality replacement designed for select Chevrolet and GMC models. This kit includes all necessary gaskets and hardware for a hassle-free installation, ensuring a precise fit and reliable performance comparable to the original equipment. Consumers have praised the manifold for effectively solving exhaust leaks, with one user stating, "Worked great for a 2010 on drivers side. Solved the tick from exhaust leak". While many recommend this product for its cost-effectiveness and durability, some express concerns about its overall quality and potential alignment issues with older models. Overall, the Dorman Exhaust Manifold Kit is recommended for those seeking an affordable and reliable aftermarket solution for exhaust repairs.

Not for you? Check out our other rated Exhaust Manifold

I saw a couple of videos showing the Dorman Exhaust Clamps and they look promising to at least quiet the truck exhaust down.

Positive Feedback

I was still pissed.

Negative Feedback
Product
7.5
Dorman 674-773 Exhaust Manifold Kit
Performance Enhancement
9 / 10
Aftermarket Replacements
9 / 10
Custom Repair Projects
9 / 10
Routine Maintenance
9 / 10
See how this compares to all Exhaust Manifold

What it does well!

Key strengths users can’t stop talking about.
Effective solution for exhaust leaks
I saw a couple of videos showing the Dorman Exhaust Clamps and they look promising to at least quiet the truck exhaust down.
Worked great for a 2010 on drivers side. Solved the tick from exhaust leak.
Bought the Dorman bracket to clamp it but I assume others will break sooner than later.
Are these a viable option?
Flawless operation reported
Works flawlessly but the rear drivers side bolt is a bitch to get to.
Dorman OEFix bolts recommended
Get the Dorman OEFix bolts!
It’s worth it.
Cost-effective compared to OEM parts
Dorman is just as good as OEM, and is roughly third of a price.
Visually looks identical to OEM, same flex pipe as OEM, not mesh type.
Dorman manifold holds up well over time
It sounds like a beast, and it's a manual so I feel like I'm driving a race car lol.
Built-in flex pipes improve installation
I went with the Dorman with the flex pipes built into it.
Effective performance without horsepower loss
A Dorman will work on a '97 with no loss to horsepower since it's effectively flows the same as the original on the car.
Comparatively better than low-quality alternatives
I'd say it's up there compared to all the no-name Chinesium intakes you see on Amazon and eBay.

Where it needs some work!

Areas to watch—feedback on possible improvements.
Dorman products have inconsistent quality
I was still pissed.
Don’t be like me.
Preference for OEM manifolds over aftermarket options
I’m favoring sticking with the new OEM and the installer that also handles emissions.
I believe that D. Thorley long tube headers will mount right up no issues but anything else needs more fabrication.
Concerns about Dorman's overall quality
It's much cheaper than Dorman junk. Dornan has a few select good products, but mostly meh.
Concerns about EGR tube alignment for older models
There are some scary reviews on Amazon - specifically for the earlier years, apparently EGR tube doesn’t line up?
Potential horsepower loss with Dorman manifold
Dorman isn't bad its just a different runner length and you lose HP.
Preference for OEM parts over aftermarket options
Get your aftermarket stuff and enjoy a working engine.
Concerns about leaks or PCV issues with Dorman replacements
Has anyone had any sort of problem with the Dorman replacement as far as leaks or PCV issues?

Compare On All Talked About Dimensions

Product NameImagePriceScoreCompareSee DetailsBuy Now
AUTOSAVER88 Exhaust Manifold Catalytic ConverterAUTOSAVER88 Exhaust Manifold Catalytic Converter$142
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Dorman 674-773 Exhaust Manifold KitDorman 674-773 Exhaust Manifold Kit$89
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A-Premium Right Side Exhaust Manifold with GasketsA-Premium Right Side Exhaust Manifold with Gaskets$64
6.9
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Dorman 674-937 Exhaust Manifold KitDorman 674-937 Exhaust Manifold Kit$89
6.8
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Dorman 674-685 Exhaust Manifold KitDorman 674-685 Exhaust Manifold Kit$84
6.0
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A-Premium Right Exhaust Manifold KitA-Premium Right Exhaust Manifold Kit$59
5.8
DetailsBuy
A-Premium Right Exhaust Manifold with Hardware KitA-Premium Right Exhaust Manifold with Hardware Kit$79
5.3
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A-Premium Engine Exhaust Manifold W/Gasket & Bolts & NutsA-Premium Engine Exhaust Manifold W/Gasket & Bolts & Nuts$76
4.9
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Dorman 674-152 Driver Side Exhaust Manifold KitDorman 674-152 Driver Side Exhaust Manifold Kit$89
4.9
DetailsBuy
A-Premium Exhaust Manifold with Gasket and BoltsA-Premium Exhaust Manifold with Gasket and Bolts$98
3.3
DetailsBuy
Dorman 674-905 Exhaust Manifold KitDorman 674-905 Exhaust Manifold Kit$96
3.0
DetailsBuy
Dorman 674-940 Exhaust Manifold KitDorman 674-940 Exhaust Manifold Kit$79
1.6
DetailsBuy
A-Premium Left Exhaust Manifold with Gasket & BoltsA-Premium Left Exhaust Manifold with Gasket & Bolts$85
1.3
DetailsBuy

Core Power Plays

The specs and strengths that make it shine.
Discussion on personal experiences with Dorman products
A quality Dorman exhaust manifold after 6 months.
Well... You know it's gotta come to this folks...
Mention of aftermarket headers and performance gains
Headers do need a tune but I picked up about 20 hp once it was all said and done.

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Discussion on header upgrades
Been ticking for a year, but lift was more important than the exhaust noise.
In my opinion just get the DT LT’s. OEM manifolds will crack eventually.
Suggestions for temporary fixes
If it only needs to pass inspection, I would braze it, and then paint it with some high temp header paint.
There is a high temp putty that you can get from most auto parts chain stores that is good up to about 2400°f.

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Discussion on the cost of OEM vs aftermarket
Exhaust Manifold replacement I got a quote to replace both today that is reasonable given the OEM manifolds are almost $300 each including the heat shields, gaskets and bolts.
Concern about the cost of aftermarket replacements
I'm not paying that kind of money for exhaust manifolds.
Discussion on video resources for installation help
Thanks for the video and tips.
Discussion on various bolt options and comparisons
I wonder if FelPro, or APDTY is better? Or should I just purchase OEM bolts from ACDelco?
I probably paid as much for all of them as he's trying to pay for 1 bolt.
$39 on Amazon for ARP bolts.
Discussion on alternatives for bolts
Do you know which pack to get from ARP?
Limited options for replacement parts due to OEM discontinuation
Who else is rocking the infamous Dorman intake manifold? 🤣
Can you even get anything else at this point on short notice considering the OEM part was discontinued?
High cost of alternative options
You can still get the FoMoCo but they are 6x the cost.
Mention of alternative products and their features
I did find that actually, good looking out!
Discussion on various aftermarket options
Finally getting tired of my jeep sounding like a diesel 😂
so far everything is holding up nicely
It's holding up fine for about 40k miles now.
Discussion on price differences between Dorman and cheaper options
Are the Doorman worth paying 3x as much or do they last no longer than the cheapest?
Dorman is typically better than oem.
Discussion on the necessity of replacement vs repair
This doesnt have to be a great fix, just enough to get me through the Roadworthy Certificate inspection.
That has to be removed to be fixed...and if you're removing it, you might as well just replace it.
That needs to be replaced. That's not a job for JB weld.
Challenges in finding specific part numbers
where did you get that part number from? the dorman website cant find it under suzuki, gmc or chevrolet.

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Preference for OE manifolds over aftermarket options
Manifold replacement time My 06 470 has recently developed the dreaded ticking at startup. It’s not
Just use an OE manifold. They obviously come with new cats and other than occasionally cracking don’t really have any other problems.
after talking to a few mechanics they said it is unlikely I would feel gains of the after market and the OEM are good enough.
Skepticism about aftermarket manifolds
I’m probably too skeptical to go that route unless someone can recommend them.
Concern about the location of the crack in the manifold
I meant where is the crack? It's going to be a pita either way.
Concerns about emissions testing and aftermarket parts
I'd recommend oem unless you don't have to do emissions testing where you live.
Concerns about snapping bolts during removal
Broken bolt on the passenger side, cold tick.
If you remove the manifolds, just expect to snap more bolts.
Honestly, unless they're pretty experienced with these sorts of repairs already, just go with the Dorman clamps mentioned.
Discussion on experiences with exhaust manifold issues
It's clear my budget is 10 year old Fords with factory issues 😅 that's okay.
I don’t think you have to pull cab experienced mechanics can do it in like 45 minutes though.
It’s a shitty job.
Replacing the manifolds I thought was the easiest and quickest out of all of them.
Discussion on emissions testing and aftermarket parts
Dorman should say if they are approved in California.
Discussion about experiences with Dorman products
I am glad to hear that the Dorman has a chance of holding up.
Advice on using longer bolts and spacers to prevent breakage
If you want them to stop breaking you need 1” longer bolts and 1” spacers.
Discussion about performance and reliability of Dorman vs OEM
Was hoping aftermarket improved on the issue.

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