Whats your estimate? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-28-2004, 02:09 AM   #1
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Default Whats your estimate?

Whats your estimate?
1997GTP
with
-9" Open Cone Filter by K&N
-Magnuson Supercharger Nose drive assembally
-3.25" Supercharger pulley
-Good-year Gator-back belt
-TOG Headers
-Borla Cat-bac exhaust
-Catalytic converter removed
-Replaced with a off-road pipe/O2 simulator
-Borla dual 2" round pipes
-After market ECU
-ACDelco Platinum plugs
-Accel 8.5mm Performance plug wires

He claims 330hp
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Old 02-28-2004, 02:12 AM   #2
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$ 7 000 CDN tops....

Mods dont really affect the KBB or black book value at all
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Old 02-28-2004, 02:16 AM   #3
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hmm, not bad I quess... hows his questimate on hp? way off base???
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Old 02-28-2004, 03:39 AM   #4
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No not way off...bout 300 -330hp....at the engine not wheels.
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Old 02-28-2004, 01:31 PM   #5
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Default Re: Whats your estimate?

-Magnuson Supercharger Nose drive assembally NO GAIN
-Good-year Gator-back belt NO GAIN
-Catalytic converter removed NO GAIN (maybe 5 tops)
-Replaced with a off-road pipe/O2 simulator NO GAIN
-Borla dual 2" round pipes NO GAIN
-After market ECU WHAT ECU?
-ACDelco Platinum plugs NO GAIN
-Accel 8.5mm Performance plug wires NO GAIN


I agree, the other mods might make 300 hp at the crank, but not the wheels.
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Old 02-28-2004, 01:35 PM   #6
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I do not think he could be that high up there with the HP. I estimate a tad under 300 at the crank. All he really has are headers, 3.25 pulley, intake and exhaust. I really doubt he could get to 330.
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Old 02-28-2004, 02:13 PM   #7
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The pulley and headers are a good combo. The exhaust on the GP isn't so hot, i'm assuming he has a U bend removal as well. I'd say around 300, but his torque is much better now.
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Old 02-28-2004, 02:21 PM   #8
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His torque would probably go down do to the race pipe, and no cat.
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Old 02-28-2004, 03:13 PM   #9
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Not on a blown 3800 with a pulley upgrade.
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Old 02-28-2004, 03:27 PM   #10
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Hmm, so with a muffler and downpipe upgrade, does not having a cat boost performance? On a blown 3800, that is.
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