With only 200 planed for production, the Ram Jet ZL1 will be a highly sought after item by collectors. We have sold out of these. They are no longer available. This page will remain for information purposes only.
Keys - allengine, scperformanceeng, gmperformanceeng, gmgoodwrencheng. Use allengine for a complete list of all three. |
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RAM JET ZL1 454
510 HP @ 5750 RPM
Torque 493 @ 4250 RPM
Sorry, we are sold out and can’t get anymore of these.
This page will stay here for information only. |
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88961499 Ram Jet ZL1 Limited Edition Fuel Injected ZL1 454
With only 200 Planned for production, the Ram Jet ZL1 is sure to be a highly sought after item. The Ram Jet ZL1 is based on the
legendary all aluminum ZL1 cylinder block. The ZL1 block first introduced in 1969, was used in Can Am racing and found it’s way into a very limited number
of 1969 Corvettes and Camaros. With a few modern updates such as provisions for a roller camshaft and improved main webs, the ZL1 block is still produced
from the original tooling used in 1969. Each engine will carry a special three-digit serial number machined into its unique cast logo Ram Jet ZL1 valve
covers.
The ZL1 makes serious power, with 510 horsepower on tap thanks to its 10.2:1 compression ratio and 640/598 lift solid roller cam.
The Ram Jet ZL1 uses GMPP’s Ram Jet fuel injection originally introduced on the Ram Jet 502. This system offers great throttle response, torque and driveability.
A forged crankshaft, rods and pistons fill the aluminum cylinder block. The aluminum cylinder heads have stainless steel valves and race quality springs actuated
by roller rocker arms.
The Ram Jet ZL1 comes complete with ignition, fuel system, water pump, starter, automatic transmission flexplate, ECM and wiring
harness for quick and easy installation.
The Ram Jet ZL1 is intended for use in 1978 and earlier pre-emissions street vehicles and any year off-road vehicles. |
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Horsepower: |
510 @ 5,750 RPM |
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Torque: |
493 ft./lbs. @ 4250 RPM |
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Max. Rec. RPM: |
6,300 |
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Compression Ratio: |
10.2:1 |
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Block: |
12370850 Mark VI, 356-T6M Aluminum Alloy, Improved ZL1 Good For 650 HP |
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Bore: |
4.250” |
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Stroke: |
4.00” |
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Main Bearings: |
12329723 |
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Main Caps: |
Four-Bolt Splayed Steel |
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Crankshaft: |
03963523 Forged 1053 Steel 4.00” Stroke, Nitride Treated. |
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Connecting Rods: |
10198922 4340 Forged Steel, Magnaflux Inspected And Shotpeened |
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Connecting Rod Bearing: |
12329715 |
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Pistons: |
88961461, Forged Aluminum, Pressed Pin |
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Piston Rings: |
12498734, Plasma-Moly |
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Camshaft: |
88961447, Mechanical Roller Tappet; Lift: .640” I, .598” E;
Duration @ .050: 236° I, 232° E; Center Line - 110 ATDC I, 109 BTDC E |
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Lifter: |
88961452, Mechanical Roller Tappet |
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Timing Chain Kit: |
12371053, Heavy-Duty Single Roller |
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Timing Cover: |
00330850 |
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Flexplate: |
14001992, 168 Tooth, 14" OD, For Automatic Transmissions |
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Oil Pan: |
14103141, 6 Quart |
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Windage Tray: |
All New Design, Teflon Coated |
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Oil Pan Gasket: |
10159519 |
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Oil Pump: |
03969870, Heavy-Duty |
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Balancer: |
10216339, 8" Harmonic Damper |
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Cylinder Heads: |
12363399, Signature Series 356-T6 Aluminum Alloy “Oval Port”, 110cc Combustion Chamber |
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Cylinder Head Stud: |
25534347 |
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Cylinder Head Gasket: |
12363414 |
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Valves: |
12366987 2.25” I, Stainless Steel; 12366988 1.88” E, Stainless Steel |
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Valve Spring: |
88961454 |
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Valve Lash: |
.016 I, .018 E |
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Rocker Arms: |
12361323 Extruded Aluminum Alloy, Roller Design, Bow Tie Logo, 1.7:1 Ratio, Stud Size 7/16” |
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Push Rods: |
88961450 I, 88961451 E; High Performance One-Piece |
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Intake Manifold Lower: |
12464482, Aluminum |
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Intake Manifold Upper: |
12464484, Aluminum |
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Wiring Harness: |
Included |
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ECM: |
Included |
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Valve Covers: |
Special, Not Sold Separately |
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Water Pump: |
14058915, Aluminum, Short Style |
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Distributor: |
01104060 HEI, With Melonized Cam Drive Gear, CPU Controlled |
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Spark Plugs: |
25164642 R43XLS, Rapid Fire #4 |
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Ignition Timing: |
Base 10 Degrees |
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Fuel: |
93 Octane Unleaded Premium Gasoline |
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Technical Notes: Melonized distributor gear must be used on all crate engines with steel camshafts. |
