Nik,
They're called "backlash" gears...I saw them a lot when I worked on precision drivetrains used is "special" U.S. Navy hardware....(yeah, 11 years doing this type of work before my now 14+ years working for NASA...)
-Bill
Chike,
very, very nice!! Have you had a chance to hook a vacuum gauge up to one of the intake manifold ports to see what the vacuum level is at idle? Can't wait to see how the additional lift works with ported and polished heads and intake runners 
-Bill
__________________
Retired NASA Rocket Scientist
Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023
Center Network Member #989
'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
My Locker
|