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Just got a 1999 GTP

C

camopaint0707

Banned
Just bought a 1999 Grand Prix GTP. 159000 miles on it. Anything I should be ready for to fix or anything like that? Also where is a good place to start modding for more power? I was thinking of a zzp stage 2 kit.
 


I'm with Drach, LIM gaskets, and service the trans, ZZP's trans shift kit is a good product too, add an external trans cooler.

Decent mods to start with would be a 3.5 pulley, downpipe, highflow cat, (ubend delete) and an air intake with at least a pretuned PCM or dyno tune

Although at your mileage id consider changing the valve springs as a smaller pulley will probably cause the stock springs to float the valves enough to kill a decent amount of power
 


I have a 99 GTP as well with 164,000 and the coolant elbows just went out. It was leaking like crazy and I still drove it for about a month to work and back filling it with mostly water before all drives. I ended up getting a new thermostat, upper and lower hoses, flush, elbows... I change the oil regualrly and run premium but other then that I haven't had any engine issues since I bought the car with 80,000 miles. Fun reliable car
 
i also have a 99' gtp with 219k on it now i haven't had any problems only thing I've replaced so far in the seven months that i owned it was the steering rack, tie rods, and thermostat. I also need to do the control arms since the bushings are bad
 




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