I am getting a set of Thumpers with the upgraded valve springs. I was wondering if, based on my combo, it would be worth it to get the GT-40 valves?
> '88 5.0 LX Coupe, 140K, still speed density w/19lb injectors,
> Densecharger cold air kit, FMS 65mm tb, FMS 67mm EGR spacer, stock
> upper intake (throat opened), Tmoss ported stock lower intake,
> Kirban afpr, Walbro 190lph fuel pump, Stock E7's, FMS 1.6 roller
> rockers, Davis "Firepower" ignition kit, March "Power & Amp"
> underdrive pulleys, FMS unequal length shorty headers, Summit off
> road h-pipe, Magnaflow cat back exhaust, Steeda Tri-Ax shifter,
> Fiore firewall adjuster, Maximum Motorsports clutch quadrant, FMS
> aluminum driveshaft, FMS 3.55 gears, KYB struts & shocks, Hotchkis
> upper & lower rear control arms, Wild Rides "Battleboxes", full
> length subframe connectors, 4 wheel disc brakes
Coming Soon: new RNH Perforance shortblock, Tmoss ported stock upper and lower, Thumper heads, Comp Cams XE264HR cam (.512/.512 lift with 1.6's, 212/218 dur @ .050, and 114 lsa).
> '88 5.0 LX Coupe, 140K, still speed density w/19lb injectors,
> Densecharger cold air kit, FMS 65mm tb, FMS 67mm EGR spacer, stock
> upper intake (throat opened), Tmoss ported stock lower intake,
> Kirban afpr, Walbro 190lph fuel pump, Stock E7's, FMS 1.6 roller
> rockers, Davis "Firepower" ignition kit, March "Power & Amp"
> underdrive pulleys, FMS unequal length shorty headers, Summit off
> road h-pipe, Magnaflow cat back exhaust, Steeda Tri-Ax shifter,
> Fiore firewall adjuster, Maximum Motorsports clutch quadrant, FMS
> aluminum driveshaft, FMS 3.55 gears, KYB struts & shocks, Hotchkis
> upper & lower rear control arms, Wild Rides "Battleboxes", full
> length subframe connectors, 4 wheel disc brakes
Coming Soon: new RNH Perforance shortblock, Tmoss ported stock upper and lower, Thumper heads, Comp Cams XE264HR cam (.512/.512 lift with 1.6's, 212/218 dur @ .050, and 114 lsa).