ok so i keep reading that the lower intake manifold is a real problem area on these engines, why is that and is there a known fix for it?
use the forum and search for Justin_gt8, and he can give u the exact details on how to. The lower manifold chokes off power at 5500-6000rpm and when its replaced with a short runner manifold, it extends the power band to 6000-6500rpm before choking off with no loss in low end hp/tq.
Toyota UZ cams are more expensive versus domestic cams because we need 4 cams versus a single cam for domestics. 4 cam for under a grand is a steal for these. The $2000+ cams are billet machined versus Lextreme's re-ground cams that are plenty stong already.
1998 GS400 VVTi Diamond Pearl White. Tein Flex coilovers, Figs Engineering front caster arm sphericals, rear knuckle sphericals, front/rear end links. TRD sway bars, TOMS 6-link kit, Ikeya Formula rear upper arms, HKS hi-power axle back.
Soon to be supercharged and intercooled...