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Old 04-28-2013, 03:51 AM
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Re: after market srt8 headers on a 5.7

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Originally Posted by Weedwaka View Post
This is interesting. Did they mention what kind of loss would be experienced running the 6.1 header on a 2005 - 2008 5.7 due to the port shape ?

Did the 09 - 10 5.7's get the SRT heads, or just the same port shape ?
You dont get a loss with the bigger primaries, but it does move the max torque up 500 rpm higher than stock. So depends which way you look at it. There will be less torque at the old maximum level, but gain more at a higher level. Hope that makes some sense.
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Old 04-28-2013, 02:08 PM
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Re: after market srt8 headers on a 5.7

Thats not bad then. Thanks for the info.

Anybody know if the SRT8 heads are a direct bolt on ? Any benefit ? What heads are you guys swapping in ?

Bit of a side track, but what power level is the driveline able to handle in factory form ?
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Old 04-29-2013, 06:36 AM
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Re: after market srt8 headers on a 5.7

If you swap to the SRT heads or the Eagle ones with the same port shape, you need to match them with the intakes as well. There are some adaptors around but have not really looked into it.
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Old 04-29-2013, 07:05 AM
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Re: after market srt8 headers on a 5.7

IIRC the 6.1 & 5.7 have different chamber volumes so you should check before swapping, cause that will change your compression ratio.
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