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F-13 Prc 5.3 Stage 2 Heads

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Old 06-16-2006, 07:53 PM
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Default F-13 Prc 5.3 Stage 2 Heads

Are This Numbers Good 420 Hp 401 Tq Uncorrected
Sae Numbers Where 416 Hp And 399 Tq Can U Guys Give
Me Your Input. My Buddy Told That The Headers And Exhaust
Where Holding Me Back. We Picked Up 55 Hp In Just The Tun
Old 06-16-2006, 07:58 PM
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U might pick up another 10rwhp from some Kooks or QTP LT's and True Duals. I think a FAST90 intake and NW90 TB would give u another 10-15rwhp probably also. But the numbers arent bad at all.
Old 06-16-2006, 08:33 PM
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I would think that cam would do extremely close to that without the heads?
Old 06-16-2006, 08:40 PM
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I Know Might Be The Cheap Headers And Y Pipe
Old 06-16-2006, 08:48 PM
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I put down 427whp 407wtq STD 417/396 SAE thru 10 bolt w/ stock LS2/LS6 heads and the F13, I do have kooks LT's but w/ kooks CYP.
Old 06-16-2006, 10:11 PM
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Those #s are just OK. I made 440/400 thru 5.3 heads 4yrs ago thru a 12 bolt/4.10 gears and a much smaller cam. Ditch the exhaust and get a pulley.
Old 06-17-2006, 12:21 AM
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I didn't know Hookers headers were that bad, I'm running the Pacesetters, with the TSP y-pipe, its not top of the line, but it gets it done. It could be a tuning issue? Or it may be the heads? I don't know.
Old 06-17-2006, 02:07 AM
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Originally Posted by NORCAL SS
Are This Numbers Good 420 Hp 401 Tq Uncorrected
Sae Numbers Where 416 Hp And 399 Tq Can U Guys Give
Me Your Input. My Buddy Told That The Headers And Exhaust
Where Holding Me Back. We Picked Up 55 Hp In Just The Tun
What catback exhaust are you running? I don't think there is anything wrong with the Hooker full lengths or the hooker offroad Y. Do you have a ported throttle body or underdrive pulley?
Old 06-17-2006, 09:31 AM
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Those are the same numbers that I got running the magic stick. I am missing a TB and pulley though.
Old 06-17-2006, 11:10 AM
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Guys I Do Have A Pulley But Stock Exhaust W/ A Cut Out
For The Tb I Think Its Ported From The Previous Owner
Old 06-17-2006, 11:12 AM
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Also Got 3.73 Gears In The Stock 10 Bolt
Old 06-17-2006, 11:17 AM
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Numbers are pretty close to the average. Gotta remember, alot of numbers you see folks brag about online are with all the lil dyno tricks done, the higher number be it STD, SAE, or uncorrected, and they count spikes in the graph! Your numbers are where they should be in the REAL world.

The Hooker headers are good headers, but there Y pipe sucks. A lack of a decent merge kills the flow. When I was running Hooker LT's, I had a custom Y made with a flowmaster merge and not only did it get rid of my rasp the power output came up.




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