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ZZ6 Engine - Automatic Transmission Flexplates
Part #
Outside Dia.
14088765
12 3/4"
12554824
14"
14088761
14"
Pilot Bearing:
You must install a pilot bearing in the rear of the crankshaft if the engine will be used with a manual transmission. The pilot bearing
aligns the transmission input shaft with the crankshaft centerline. A worn or misaligned pilot bearing can cause shifting problems
and rapid clutch wear. A roller pilot bearing Part number 14061685 is recommended for this engine. This heavy-duty bearing adds
an extra margin of reliability to a high performance drivetrain.
Starter:
The ZZ6 EFI Deluxe engine does not include a starter. The starter must be matched to flywheel (or flexplate) diameter when
installing a ZZ6 EFI engine. Small diameter flywheels are 12 3/4" in diameter, and have starter ring gears with 153 teeth. Large
diameter flywheels are 14" in diameter, and have 168 teeth on the starter ring gear. This difference in flywheel diameters requires
two different starter housings. Starter noses used with 14" diameter flywheels have two offset bolt holes; starters used with 12 3/4"
diameter flywheels have bolt holes that are straight across from each other.
Note: Chevrolet starter motors use special shouldered mounting bolts, which register the starter on the block. The following
starters and hardware can be used with the ZZ6 EFI engine:
12361146
High-Torque Mini Gear Reduction Starter for 12 3/4" and 14" diameter flywheel/flexplate. Kit includes bolts and
shims. (10.5 lb.)
19302919
Permanent magnet gear reduction (PMGR) starter for 14" diameter flywheel/flexplate (10 lb.)
14037733
Bolt, starter mounting, inner for 12 3/4" PMGR starter
12338064
Bolt, starter mounting, outer for 12 3/4" PMGR starter; also for 14" PMGR starter (2 required)
Oil Pan / Filter / Adapter / Dipstick:
The ZZ6 EFI engine includes an oil pan part number 12557558 This is a four quart, right-hand dipstick oil pan and gasket.
The ZZ6 EFI engine assembly includes an oil filter adapter and oil filter element (AC # 25324052 or PF454).
The oil dipstick for the ZZ6 EFI engine is on the right-hand (passenger) side of the block. A dipstick for the lefthand (driver)
side of the block is available. Check for clearance when replacing the dipstick of an early-model block with a left-hand dipstick.
The recommended oil dipstick and oil dipstick tube are Part number 12551144 and Part number 12551154 respectively.
This oil dipstick tube bolts to the engine block below the deck surface, and can be used with header-type exhaust systems.
Air Cleaner:
A foam or paper element, low restriction air cleaner should be used to protect the engine from excessive wear and diffuse the
air entering the throttle body. The fuel mixture distribution can be upset if no diffuser is used, causing poor power and misfiring
at high engine speeds. Always check for adequate hood clearance when installing a new air cleaner. Chevy Performance Parts
has two chrome 14" air cleaner assemblies for single 4 barrel engines. 12342071 is the Classic design and 12342080 is the high
performance design.
Chevrolet Performance Parts ZZ6 EFI Deluxe Engine
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
Conv Bolt Pat. Starter Ring Gear Teeth
10.75"
153
11.50"
168
10.75,11.50"
168
Notes
For one-piece crank seal
Heavy-duty flexplate with increased thickness
for one-piece crank seal
For one-piece crank seal
19368171
IR 04MY18
PART NO.
DATE
04MY18
Initial Release - William Philippin
4
SHEET
REVISION
63
OF
AUTH
N/A
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