C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Oct 3, 2025 | 10:08 PM
  #21  
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Last edited by MotorHead; Oct 3, 2025 at 10:16 PM. Reason: Duplicate
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Old Oct 4, 2025 | 10:22 AM
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Originally Posted by cador
Anybody been able to buy these lately? They are well reviewed, and I want a set, but have been calling emailing for the last 2 weeks with no luck. They still in biusiness?

https://xs-power.com/chevrolet-headers-4.htm
Looks like you can still order them by Paypal or CC on their site. I am not sure if the order will go though, but the price is just amazing. I also called them and told them who I was and we will see if they call back. A group buy presented to them might just be the kick in azz they need.lol
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Old Oct 4, 2025 | 11:49 AM
  #23  
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Sorry check that , they are shorty headers you can order not the long tube.
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Old Oct 6, 2025 | 02:01 PM
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I received a message on my phone from XS Power. "Hey Wayne what's happening, it's been like 10 yers lol. Lots O **** has happened between then and now huh? Pretty sure we have them in stock I will check over the weekend. Do they want small block or big block?"

Cross yer fingers guys that's all we can do now lol
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Old Oct 6, 2025 | 04:10 PM
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Originally Posted by MotorHead
I received a message on my phone from XS Power. "Hey Wayne what's happening, it's been like 10 yers lol. Lots O **** has happened between then and now huh? Pretty sure we have them in stock I will check over the weekend. Do they want small block or big block?"

Cross yer fingers guys that's all we can do now lol
Question specific to C3 BBC header side pipes. Many of us with BBC in C3 Vettes want to know how well these clear with AFTER MARKET Raised port Aluminum heads they are typically 0.300-0.600" raised up exhaust port:
AFR raise port 0.375"
TFS Raise port of 0.300"
Brodix has some stock exhaust port heads RR-BB-O and RR-BB-R heads and some as high as 0.600"
this only names a few
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Old Oct 7, 2025 | 06:01 PM
  #26  
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I too can vouch for the tremendous quality of these LTH headers and what a steal they were back 7-8 years ago when I bought them as well. I had mine ceramic coated even though they are stainless steel since I did not want them to discolor over time like SS will do with heat. They pretty much look like the pictures below today. Coupled with the C4 Borla Type S mufflers that I custom fitted to the 78 L-82, they not only allow the 355 L-82 to make big power but they sound fantastic flowing through those Borlas!






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Old Oct 9, 2025 | 12:45 PM
  #27  
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I have a set of these on my car as well, and the only thing I think they screwed up on was the header flange.....they should have made them the ball and socket arrangement.
Best headers I've ever owned though.....
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Old Oct 9, 2025 | 02:35 PM
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I just got a text message from XS Power and they said they have one set left but will go into production if people want them, timeline, 60 days. They said they were exactly the same as we designed, 1 7/8" primaries and polished 321 SS. I asked them to send me a picture first. $1200, but that's about the going rate for crappy headers that they sell these days and don't fit lol. It is what it is.
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Old Oct 9, 2025 | 02:42 PM
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Originally Posted by 4273x268
Question specific to C3 BBC header side pipes. Many of us with BBC in C3 Vettes want to know how well these clear with AFTER MARKET Raised port Aluminum heads they are typically 0.300-0.600" raised up exhaust port:
AFR raise port 0.375"
TFS Raise port of 0.300"
Brodix has some stock exhaust port heads RR-BB-O and RR-BB-R heads and some as high as 0.600"
this only names a few
Don't forget the heads are on an angle and aren't nearly as raised overall as you might think. I never even noticed a difference on my AFR heads.
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Old Oct 9, 2025 | 03:06 PM
  #30  
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So they sent me a pick of Highly Polished SBC Sidepipes no wonder they were $1200. I'll keep trying.

XS Power SBC Sidepipes
XS Power SBC Sidepipes


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Old Oct 12, 2025 | 10:35 PM
  #31  
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Originally Posted by MotorHead
Don't forget the heads are on an angle and aren't nearly as raised overall as you might think. I never even noticed a difference on my AFR heads.
Hi thanks for replying but did NOT answer the question. You have a SBC 427 with SBC headers and side pipes (a little more wiggle room). BBC have 2 1/8" primaries with 4" collector they are a lot bigger. You are correct with 0.300" raise E port. I ballpark figure .25" up on both sides and .25" to right on passenger side and .25" left on drivers side.
If anyone has run the BBC XS-Power headers with side pipes with raise exhaust ports typically found on aftermarket heads, please shareProd.# BB SIDE PIPES
  • 1963-1982 C2 & C3 Corvette Big Block polished stainless steel headers and side pipes
  • 2 1/8" primaries, 3/8" flange, 4" Collector
  • 321 High Strength Polished Stainless Steel, Purge Tig weldedSide Pipe mounting hardware is included
  • Side pipes are loaded with reverse flow glass pack mufflers
  • Gaskets are included
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