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Grand Prix GTP L67 3800II MODS


nachius

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2007 was a rough year I had dreams to complete this project, but more important factors have dictated otherwise. Money is tight so I have to part ways, cut my losses and survive. With that being said here is what I have for sale:

 

Now for the BIG mods:

 

THR Big Valve Heads for the Grand Prix L67 w/ less than 5k on them painted yellow, but recently cleaned up.

Revised Valves

105# Comp Cam Springs

Comp Cam steel retainers

Comp Cam lifters

Comp Cam Pushrods

 

The heads were done by a shop called THR in Minnesota and have been flow benched by the prior owner:

 

Intake Exhaust

67 54

134 112

185 154

214 183

231 196

238 202

241 206

 

Asking $1650 + Shipping OBO on the heads (assembled) including everything listed above

 

Thrasher Engineering Grand Prix Race Transmission with less than 2k on it:

 

The trans is a 4T6e that has been upgraded to a HD. It comes with 3.29 gears and Thrashers single chain, the CYA Limited Slip Diff, CYA 2200 Hi Stall torque Converter and the Stage 3 shift kit. I believe the transmission has every upgrade offered by thrasher. Converter needs a new bushing pressed in as the one on the converter is scored slightly.

 

Asking $2000+ Shipping OBO for the Trans

 

Gen V M90 Supercharger setup for the GTP:

Low Mileage

Gen V M90 Setup (Complete minus bolts/gaskets [may have gaskets])

ZZP Modular Pulley System

2.6, 2.8, 3.0, 3.2, 3.4 Pulleys

Gen V Lower Intake Manifold

04+ Alternator Bracke and Alternator (for clearance)

95-99 N* Throttle body w/ Adapter Plate

 

$950+ shipping OBO for everything above

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