extractors Vs cast iron headers on Holden 6 - Holden General Discussion

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Fastlane » Holden Forums » Holden General Discussion » extractors Vs cast iron headers on Holden 6

extractors Vs cast iron headers on Holden 6

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Guest		#1 Posted : Sunday, 20 January 2008 5:10:54 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hi guys, Need some help ? I have a pretty hot holden 6 producing 171 hp at the back wheels . I ve been told to get a nice set of mandrel bent extractors for it as the xU1 cast iron headers are holding it back from producing more hp . What do you reckon ? Any help much appreciated. Thanks Biga064

Guest		#2 Posted : Tuesday, 22 January 2008 8:18:08 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		i knew a few guys with them open wheeled holden 6 drag cars. all had to use early style of head. all of them used the cast iron manifold. as they were getting better times than using extractors.

HK1837		#3 Posted : Tuesday, 22 January 2008 11:48:56 PM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,902 Thanks: 1 times Was thanked: 559 time(s) in 534 post(s)		Holden fitted Extractors to the '73 Bathurst XU-1, so obviously they thought it was necessary. So if you are to produce over 200hp from a 202 I'd do it. The cast headers are good for a strong street engine, but properly done extractors should benefit such
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?


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HK1837		#4 Posted : Tuesday, 22 January 2008 11:48:56 PM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,902 Thanks: 1 times Was thanked: 559 time(s) in 534 post(s)		Holden fitted Extractors to the 73 Bathurst XU-1, so obviously they thought it was necessary. So if you are to produce over 200hp from a 202 Id do it. The cast headers are good for a strong street engine, but properly done extractors should benefit such a
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?


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Fastlane » Holden Forums » Holden General Discussion » extractors Vs cast iron headers on Holden 6

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