Okay so I have a 2000 Grand Prix GT that I top swapped and have many mods all from ZZPerformance. I'm looking for advice on what to do next, here's a list of my current mods. I started out with building the whole COMPLETE motor naturally aspirated then wanted more power which would be why I have a GT1 cam. The motor has just 5,000 miles on it.
-ZZP tune
-GT1 cam, gm #90 valve springs, comp retainers
-bored .020 over federal mogul pistons
-L36 heads ported (gasket matched intake and exhaust), SS valves, autolite 104
-Gen 3 blower 3.4 mps bought it before I knew there was a GenV ZZP said they could make it as good as a GenV had them port inlet and outlet
-SSM90 setup but went with a SFI supercharged crank pulley so i can run smaller SC pulleys, 8 rib SC belt
-ZZP ported LIM to match SC and extra gasket matching to match up with my heads, coolant holes plugged
-ZZP modified fuel rails, ZZP flow matched L67 injectors
-Northstar throttle body, LQ4 MAF, SLP intake
-high velocity oil pump
-new stock lifters, push rods, rockers, connecting rods, bearings etc
-ZZP front power log, ceramic coated crossover, and ceramic coated rear manifold
-ZZP 3" down pipe no cat, SLP 2.5" loudmouth catback exhaust
-No EGR, NO evap
-I have Aeroforce gauges I currently have 0 knock on 93 octane gas, I cant run E85 don't have it in the area
I want to get to a 3.1 pulley or the 12's in a quarter mile this is what ZZP says:
-Double roller, crow cam 140lb valve springs, SSIC, run a 3.25 pulley they said a 3.1 will be to aggressive on my set up? thoughts? Some people say SSIC are pointless I wish I could run a full size unfortunately I cant. So I asked ZZP if I should put a XP cam in they said not worth the $ or time maybe 10hp gains thoughts? I still think 140lb valve springs are to much ZZP claims 3800's just need more spring from the factory it will run better, rev higher and have 0 valve float? Let me know what you guys think I'd appreciate Thanks.
