Sounds like your Sychro's could be worn out, but your running 20w50 in your trans?
The higher idle is probably from the cold start valve. Kinda like a mini injector, but they normally kick off after 10 seconds. Have you checked for vacuum leaks?
My 85' kinda takes a while to warm up too, you could always get a colder thermostat so it opens up earlier.
Black on Black coupe 5spd
Tokico lowering springs, KYB struts and shocks, BavAuto strut bars, SPC adjustable camber plates, Ireland Engineering rear toe and camber kit, Sparco buckets, Rota Torque 16x7 fronts 17x9.5 rear, MSD coil,M30B35 swap, Mustang GT Injectors, Port/Polish, 2.79 Lsd
1994 GMC Jimmy
1979 Trans Am 10th Anniversary
#16 of 5,683 made
1972 Corvette Stingray
- glass top with 4spd
KOI Import Parts-- 513-771-7777