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Big
Block Crate Engine Special:
Call us toll-free
at 1-800-926-4977 ext. 1232 (or 330-792-5258) between 7:30 a.m. and 9 p.m. EST Monday
through Friday and 8 a.m. 'til 4 p.m. Saturdays about this exclusive Greenwood Chevy
Performance Parts special!
ZZ
502-ci 502 Long Block Base Engine Kit
The king of all big block crate engines is the ZZ 502/502, with
torque and horsepower that will have you grinning and streetable manners that
have your competition wondering what hit them. The ZZ 502/502 represents our
latest and best efforts to develop awe inspiring big block power in a
dependable, durable and drivable big block crate engine. With its big valve
aluminum heads, roller camshaft and complete dyno tuned induction and ignition
system, this is as close as you'll come to a custom built 502 at crate engine
prices. And for those that like to grind on heads, change cams, mill for
compression or whatever, we've left it only partially assembled. Make no
mistake, everything you need is there, but you don't need to disassemble
anything to make head mods or an intake swap. It really is the best of both
worlds, bolt it together and go, or tweak it to meet your specific needs.
It's like someone at GM Performance Parts has been there, and we
have. The ZZ 502/502 makes extensive use of aluminum to keep weight down.
Including aluminum heads, intake, water pump, and valve covers. Additionally,
this king of the crate engines is full of heavy duty parts, to ensure that it
will be making awesome horsepower for a long, long time. With its forged
aluminum pistons, forged steel connecting rods with 7/16" bolts, forged
steel crankshaft, 4-bolt main block, stainless steel valves, 6 quart oil pan,
and windage tray, the ZZ 502/502 seems more like a custom race engine than a
crate engine.
With a 5800 RPM redline it might just feel more like a custom
race engine than a crate engine too. Available as a long block kit or a complete
engine kit, the ZZ 502/502 is designed to meet your needs. The base kit includes
a fully assembled short block with 2.25" intake aluminum heads, valvetrain,
aluminum valve covers, harmonic balancer and 14" automatic trans flexplate.
The complete engine kit adds an aluminum intake manifold, 850 cfm carb, complete
ignition system, gear reduction starter and aluminum water pump. Both kits
include hardware and gaskets for all parts included in the particular kit.
Finally "some assembly required" is a good thing.
The ZZ 502/502 is not intended for marine use, and should
only be used in 1973 and earlier pre-emissions street vehicles or any year off
road vehicles.
Technical Notes: Do not use bolt sealer on the cylinder head bolts, the
holes are blind tapped. The long block kit includes partial engine, cylinder
heads, valve covers, valvetrain, and fasteners and gaskets for the parts
included. The complete engine kit includes the long block kit plus intake
manifold, carburetor, distributor, water pump, spark plugs, spark plug wires
with looms and additional fasteners and gaskets.
Horsepower.........................................................502 @ 5200
RPM
Torque.......................................................567 Ft Lbs @ 4200
RPM
Maximum Recommended RPM................................................5800
Compression Ratio
...............................................................9.6:1
Block ..........................................10237292 - Cast Iron 4-Bolt
Mains
Crankshaft ..............................................10183723 - Forged Steel
Rods..................10198922 - Forged Steel Shot Peened, 7/16"
Bolts
Pistons.............................................12533507 - Forged Aluminum
Piston
Rings...................................................................12524293
Cam.....12336543 - Hydraulic Roller Lift: .527" Intake, .544" Exhaust
Camshaft Duration @ .050".....................224° Intake, 234° Exhaust
Timing Chain ..............................................3891519 - Single
Roller
Heads..................12363390 - Aluminum Oval Port 110cc Chambers
Intake Valves ..............................12366987 - 2.25" Stainless
Steel
Exhaust Valves.............................12366988 - 1.88" Stainless Steel
Valve
Springs................................................................12462970
Rocker Arms...............................................12523976 - 1.7:1 Ratio
Intake Manifold..............................12363407 - Aluminum w/Holley
Carburetor............................................12366996 - Holley
850cfm
Distributor..............................................................1104067
- HEI
Valve
Lash............................................................................Zero
Fuel.............................................................................92
Octane
Spark Plug.....................................................25164642 Rapid
Fire
Ignition Timing ........................8° @ 800 RPM 36° Total @ 5000 RPM
Tech Tip: "Oil Filter & Oil Cooler Bypass Valves"
Speed Reading by Wade Hajek of GM Performance
Parts
Gen V and
Gen VI big-block crate engines come with two oil pressure bypass valves
installed in the engine blocks. Both of these valves are rated at 11 psi
pressure differential. One valve is for the oil filter and the other is for the
production oil cooler. If you install an aftermarket oil cooler or remote oil
filter that attaches to the oil filter pad on the engine block, you should be
aware that you need to change the oil filter bypass valve in the engine block.
The aftermarket oil lines add resistance which will cause the bypass valve to
bypass the aftermarket oil cooler and/or oil filter all the time.
Obviously,
if the cooler and filter are bypassed the oil will be dirty and hot. Your engine
could run hotter and could be damaged by dirt in the oil. If you choose to use
an aftermarket cooler or remote oil filter that attaches to the pad, you should
change the bypass valve to one with a higher differential pressure rating. A
good choice would be GM# 25161284 which is rated at 30 psi. Remove the valve
that is closest to the crankshaft and replace it with the new valve. Press the
new valve into the engine block and stake it in three places. You should note
that the bypass valves don't need to be changed if you use a production oil
cooler which uses the production holes in the engine block and you don't use a
remote oil filter. Also, if you use an adapter that just angles the filter for
clearance you don't need to change the bypass valves.
Part number #12371204
Only $6,880.00*
BASE ASSEMBLED #12496963
Only $7,175.00*
* Prices subject to change without notice.
GM
PARTS
WARRANTY INFORMATION:
Due
to the nature and intended usage of GM Performance Parts, the parts
available on this website and in our walk-in store (except for engines and
partial engines) are sold without any express or implied warranty of
merchantability or fitness for a particular purpose. The entire risk as to
the performance of such parts is with the buyer. Should such parts prove
defective following their purchase, the buyer and not the manufacturer,
distributor, or retailer, assumes the entire cost of all necessary
servicing, repair, damage or loss to property and consequential damage.
"Engine and Partial Engine Warranty" under the provisions of the
General Motors Dealer Service Parts and Accessories Warranty Section 1.1.3a,
engines and partial engines, including partial engines in kits, are
warranted against defects in materials and workmanship. This warranty
specifically excludes engines and partial engines used in racing or
competition or that fail as a result of alteration. These engines and
partial engines are not designed or approved by General Motors for marine
use. Installation of GM Performance Parts may adversely affect GM New
Vehicle Warranty. Please consult your dealer for terms and conditions.
Call us toll-free
at 1-800-926-4977 ext. 1232 (or 330-792-5258) between 7:30 a.m. and 9 p.m. EST Monday
through Friday and 8 a.m. 'til 4 p.m. Saturdays about this exclusive Greenwood Chevy
Performance Parts special!
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