Thread: picked up new car/got ?'s

ok well i couldnt find a stock 99 gtp file, what about the 2000 models, is there any differences..

update!
i pulled the plugs and they were autolite 103's and are in decent shape and it appears all cylinders are firing the same and no internal issues are noted from the look of the plugs

I then performed a cylinder leakdown test and all cylinders except 1 & 3 only show 1 - 3% leakdown which is awsome for 160k miles (if original engine)
cylinder 1 shows 10% leakdown and it leaking past the exhaust valve
cylinder 3 shows 20% leakdown past the exh valve as well

now should i pull the head/heads and freshen up or try to run some gm top end cleaner or sefoam product to try and clear off possible carbon on those valves

the car has 160k on it and i gotta pull the manifold off anyways because the lifters are making some noise

i also see these heads are cast iron, do they sell aftermarket aluminum ones, i can see that beeing a great advantage and eliminating all of the detonation issues with these cars