The
Oldcorollas FAQ
An FAQ dealing with KE1x to KE7x Toyota Corollas
Supplement to http://groups.yahoo.com/groups/oldcorollas
There are two stock camshaft profiles. The first is found in Sprinter
motors with twincarbs (K-B, 3K-B), it's an 18-58 (256 degrees). The
second is found in all other K motors with solid lifters, and is a
16-50 (246 degrees) with 0.338" intake valve lift and 0.356" exhaust
valve lift.
The camshaft is modified by grinding the lobes, you don't have to buy a
new cam when you want different valve openings.
There are many, many aftermarket cam grinds available for these motors.
Here are some popular ones:
Tighe 112: 20-60, 260 degrees,
0.423" valvelift (probably the best for torquey street use, 7000rpm
peak power)
Tighe 104: 25-65, 270 degrees,
0.423" valvelift (stage 3 grind, Doug uses this cam, I use the same
spec grind with less lift)
Camtech 609: 33-64/72-32,
277/284 degrees, 0.435" valvelift (this is Stewart's cam, peak power
8000+rpm)
Waggott 605: 21-61/63-19, 262
degrees, 0.347"/0.343" valvelift (stage 1 grind, Alex uses this one,
peak power 6500rpm)