shims are the little 10c pieces that sit on the buckets.. the cam lobe runs along the shim, which sits on the bucket, the bucket sits in the head ontop of the valve.. it sounds complex but reallt it isn't it is the most basic and IMO one of if not the best way to run a valvetrain minimal loss, simplicity, can sustain high revs all day long..
the charger CAN be fitted to a 4AGE.. and if you use all the GZE computer and injectors etc etc.. you can bolt it all in (7 rib block only) but i highly suggest using the 4AGE crank pully Vs the GZE crank pully..
the 4AGE crank pully is slightly smaller than the GZE.. so in effect it would run less boost (turning the sc slower) but with the already high compression in the motor, should actually outperform most 4AGZE's if dont right.. you will need to make sure you kick back the timing.. although the ecu does support a knock sensor.. best to retard the base timing anyway..
my smallport in my old 86 made 110whp.. so conservitave figure of say 155-160hp @ engine.. which is about 25-30hp more than stock.. and all i did was rebuild top to bottom, port work, deck the head 20 thou, add quads and adaptronic.. car ran consistant low-mid 15 sec passes.. which proves it power output (a normal 4AGE conversion (pod filter/exhaust etc) should see around the 16's high 15 if u get launching down..
cams are quite easy to change if u know what your doing.. it is a simple case of taking off the covers, taking out the cams.. replacing with new cams.. after all the bolts are up to spec, check all clearences change the shims (different thickness shims) to bring up to spec.. in .25mm out .35mm.. pretty universal.. alomst everything uses that spec..
