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  1. #21
    Join Date
    Mar 2016
    Posts
    221
    Quote Originally Posted by rodders188 View Post
    What system loud or quiet? Size headers?
    went the quieter system with Hurricane 1 7/8th headers, 100 cell cats, 3" system. It will be installed in 2 weeks with a harrop cold air box and pod, thermostat, KPM 1000cc injectors, top pulley and tune. hope to see high 300 early 400's rear wheel kw's. maybe?

  2. #22
    Join Date
    Apr 2007
    Posts
    2,368
    Should put a smile on your face, just bear in mind sometimes takes a few kms on a new exhaust for it to bed in and sound its best from carbon build up. Your manta should have zero drone

  3. #23
    Join Date
    Mar 2016
    Posts
    221
    Quote Originally Posted by rodders188 View Post
    Should put a smile on your face, just bear in mind sometimes takes a few kms on a new exhaust for it to bed in and sound its best from carbon build up. Your manta should have zero drone
    yeah mate I had a manta on my previous GT and it sounded mint, nice and grumbly. I will whack a cam, a linginfelter balancer, bottom pulley and some Higgins heads on it next and that will pretty well do it for me.

  4. #24
    Join Date
    Jan 2004
    Location
    Perth, WA
    Posts
    7,049
    As good as Higgins are, it would be worth looking at MAST

  5. #25
    Join Date
    Mar 2016
    Posts
    221
    Quote Originally Posted by white_lie View Post
    As good as Higgins are, it would be worth looking at MAST
    aren't they about double the price?

  6. #26
    Join Date
    Jan 2004
    Location
    Perth, WA
    Posts
    7,049
    Quote Originally Posted by Trucker View Post
    aren't they about double the price?
    Not quite that much AFAIK.
    Have a talk to SQP in Perth or Gen F GTS as he runs them.

  7. #27
    Join Date
    Apr 2014
    Posts
    608
    Fully speced out with PAC springs and Mast Stainless valves TI retainers and Yella Terra Mast Roller Rockers your looking at 6k for the Mast Mid Bore LS3 heads. You have to get longer pushrods as well as the decks are taller. Pushrods are around 8.25inch.

  8. #28
    Join Date
    Feb 2014
    Posts
    4,655
    You can see what many different CNC heads are worth here compared to stock.
    http://www.hotrod.com/how-to/engine/...er-heads-test/

    From the results it indicates it's a lot of money for a small gain in HP when porting stock heads, this is why I went with MAST.

    2014 HSV GenF-GTS fitted with a Forced Induction Interchiller
    http://www.facebook.com/ForcedInductionInterchillers
    Australia's outright Fastest VF GTS & Fastest 6.2L 1900LSA with a stock bottom end
    9.700 @145.22mph 21/June/2017
    V-Box Results 0-100km/h in 2.47sec

    Looking for colder IAT's? we have achieved 11c IAT2 on a 41c day and -8c during winter.
    We have proven cabin AC vent temps are better than GM spec, both IAT2's and vent temps are all on video with nothing to hide.

  9. #29
    Join Date
    May 2011
    Posts
    224
    What is the life span of a mild steel system if the car is garaged?
    Current Ride: 2014 HSV Gen f GTS, Auto - Herron White
    Previous Ride: 2011 FPV BOSS GT 335, Manual - Edge with Silver stripes

  10. #30
    Join Date
    Jan 2004
    Location
    Perth, WA
    Posts
    7,049
    I'd say the mufflers will collapse before the system rusts out







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