wyominggun
Moderator
- Joined
- Aug 23, 2007
- Messages
- 50
Just bought my first Grand national. I need to know what weight oil to use and synthetic or conventional, also if I should use a additive like lucas. Here are the engine details below. All engine machining and assembly along with head work was done by Gromms Performance in San Jose Ca
Factory LC2 block, with billet main caps, JE pistons, ARP bolts throughout, deburred and reliefed stock rods, crane roller cam, copper gaskets, and king bearings, remote oil filter with double capacity and braided lines.
Champion iron CNC ported heads with larger intake/ exhaust valves, 1.65 ratio rockers with hardened shafts, RJC valve cover spacers and "Buick Motorsport" black valve covers with K&N breathers
Ported factory intake, Accufab 70mm polished throttle body, Hemco polished doghouse, Precision PT52 turbo, ported factory headers( welded to prevent cracks), Precision front mount intercooler, 55lb siemens injectors, 2 Walboro 340 fuel pumps on an ATR hanger, modded ECU for low impedence injectors, new coil pack, underdrive pulleys, adjustable fuel pressure regulator with pressure guage, Nick Mchale heavy duty 3 row radiator, ATR 2.5 inch stainless exhaust, Terry Houston 3" down pipe with ATR wastegate
PLease advise what I should use. Car will be used for "sunday driving". No drag racing but will get on her once in awhile. I live in Western NY area so never really hot, car will only be driven during summer months and stroed the rest of the year. Thanks ahead of time for your help
Factory LC2 block, with billet main caps, JE pistons, ARP bolts throughout, deburred and reliefed stock rods, crane roller cam, copper gaskets, and king bearings, remote oil filter with double capacity and braided lines.
Champion iron CNC ported heads with larger intake/ exhaust valves, 1.65 ratio rockers with hardened shafts, RJC valve cover spacers and "Buick Motorsport" black valve covers with K&N breathers
Ported factory intake, Accufab 70mm polished throttle body, Hemco polished doghouse, Precision PT52 turbo, ported factory headers( welded to prevent cracks), Precision front mount intercooler, 55lb siemens injectors, 2 Walboro 340 fuel pumps on an ATR hanger, modded ECU for low impedence injectors, new coil pack, underdrive pulleys, adjustable fuel pressure regulator with pressure guage, Nick Mchale heavy duty 3 row radiator, ATR 2.5 inch stainless exhaust, Terry Houston 3" down pipe with ATR wastegate
PLease advise what I should use. Car will be used for "sunday driving". No drag racing but will get on her once in awhile. I live in Western NY area so never really hot, car will only be driven during summer months and stroed the rest of the year. Thanks ahead of time for your help