cmerc

I have a '94 Z28 M6, with the following mods according to the previous owner. Most of my driving is below 50mph, I am about to change plugs to NGK TR55IX what gap would you guys recommend.
383 Stroker AFR-210 Heads Ported w/210-160 valves
Comp Cam 1.550 Springs Titanium Retainers 10 degree locks
LT4 intake Port Matched to heads
TPIS Solid Roller (700-701) .572 lift 278 duration Comp Cam Rollers
Cloyes Roller Chain
Titan Oil Pump - Adj. Oil pressure
30 over JE Pistons 10.3 ARP head studs Bottom end bolts and Deck plugs
Balanced & Blueprinted Bore & Hone with deck plates Align honed
EGR block off - no air pump
Lingenfelter 58mm throttle body
Granatelli Mass air flow sensors - G2 high flow rubber bellows
27lb. Injectors
TCI Damper
Meziere elec. Water pump 160 degree thermostat
Be Cool Alum Radiator
Performance Dist. 9mm Live wires
MSD 6AL - MSD Coil - More Performance opti-spark
S/P Steel Billet Flywheel
Centerforce Clutch
Hooker Longtube Headers
9" ford rear end limited slip 31 spine axles 411 gears

regorih383

iTrader: (21)

what kind of power is that motor making? .45

dhdenney

iTrader: (53)

What's your compression ratio?

cmerc

I was told the compression is 10.5 and the hp is 550. I am curious though about the injectors, are they big enough, as a relative point (I think) the fuel pressure is set at 62 psi, when I got the car it was some where between 75 & 80 psi. Unfortunatly I have been experiencing some minor probs which has prevented any performance tinkering.

dhdenney

iTrader: (53)

I'm running 30# right now and they are enough. However, that's at 43.5 psi. At 62 psi, that will be more than enough. You might wanna look at taking pressure back to stock and getting bigger injectors. If 27# is rated at 43.5 psi, then at 62 psi those injectors are more like 36#s.