Exhaust Manifolds

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Before you spend any money on the OPGI exhaust manifold talk to someone that has them.

That company sells a lot of high priced junk!!!
 
I'll just drop this here.....
https://www.hotrod.com/articles/eng...es-headers-for-horsepowerso-you-dont-have-to/
Apparently, most cool stuff that used to be free now requires a pay subscription.
Or even worse: not available for people outside of the US 🙁
Check this out:

Due to the EU’s Global Data Protection Regulation, our website is currently unavailable to visitors from most European countries. We apologize for this inconvenience and encourage you to visit www.motortrend.com for the latest on new cars, car reviews and news, concept cars and auto show coverage, awards and much more.



Before you spend any money on the OPGI exhaust manifold talk to someone that has them.

That company sells a lot of high priced junk!!!
Thank you very much for the warning! I think I will google around to see the reviews on their manifolds.
 
Or even worse: not available for people outside of the US 🙁
Check this out:

Due to the EU’s Global Data Protection Regulation, our website is currently unavailable to visitors from most European countries. We apologize for this inconvenience and encourage you to visit www.motortrend.com for the latest on new cars, car reviews and news, concept cars and auto show coverage, awards and much more.




Thank you very much for the warning! I think I will google around to see the reviews on their manifolds.
:wtf: Could you at least read the article? It showed the engine to be down something like 5hp overall after almost complete destruction of the tube's roundness....
 
:wtf: Could you at least read the article? It showed the engine to be down something like 5hp overall after almost complete destruction of the tube's roundness....

Nope, they blacked-out the entire website and the few lines visible were faded away 🤔 Looks like they really want to be sure that nobody gets to read a letter unless he is legally authorized :doh:But don't worry, your posts/words here gave me now good hints for what to google, so thank you 👍🙂
 
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Wow, that's a lot for stock exhaust manifolds. Have you tried used exhaust manifolds ? I would buy good set headers for that price. I'm not sure why the headman #68310s don't fit right your LeMans. Your LeMans with a SBC should take the same headers my 81 Malibu and 78 El Camino.

Doug
 
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He is in GERMANY!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Where is he going to get used American car parts from!!!!!!!!!!
 
Left manifold:

Dorman 674-203 or ATP 101083

Right manifold:

Dorman 674-202 or ATP 101084

What you would get from OPGI or Year One would be these repackaged for probably two or three times the price. They are mid-70's small block manifolds.
 
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Wow, that's a lot for stock exhaust manifolds. Have you tried used exhaust manifolds ? I would buy good set headers for that price. I'm not sure why the headman #68310s don't fit right your LeMans. Your LeMans with a SBC should take the same headers my 81 Malibu and 78 El Camino.
Doug
I would try them if somebody has a decent pair for sale on here and is willing to send them over to Luxembourg 😀 As for the headmans you suggested, I googled around on several sites for reviews, and apparently, I am not the only one having fitment issues on a G-Body :/ Looks like the guys manufacturing these don't pay attention to their job about positioning, routing or even aligning the primary tubes.


He is in GERMANY!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Where is he going to get used American car parts from!!!!!!!!!!
Luxembourg, not Germany, but it makes your point even more relevant 😀 American Cars are a very rare sight. Except for new Mustangs or a few Corvettes, you won't find much. Okay, there are a few oldtimers but they all get their parts from the US directly. Chrysler did an idiotic market-suicide here: every model has been re-branded as a Lancia. They hoped to sell more vehicles under that name, but in the end, sales dropped to almost zero as they increased the prices by an average of 15-20%. Chevrolet only sells the Corvette and rebrands Deawoo to Chevys (which nobody buys either). Ford sells the Mustangs. Okay, they are selling well, but that's because Mustangs have a reputation here in Europe since they first appeared back then 🙂 And Cadillac... Well, lets just say they are officially sold, but everybody having the cash to buy one of these (base-price + import-duties + transport) will take his money and buy Mercedes, Audi, BMW...


Left manifold:

Dorman 674-203 or ATP 101083

Right manifold:

Dorman 674-202 or ATP 101084

What you would get from OPGI or Year One would be these repackaged for probably two or three times the price. They are mid-70's small block manifolds.
Thank you very much for these infos 🙂 If nobody got good used ones to sell on here, I will try these 🙂
 
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This is what Flemming was referencing.
Idk if daily motion will work from a European connection... Worth a shot.
 
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