Enthusiasts immediately latched onto the 428 and 429 Cobra and Super Cobra Jets, pushing them to their limits at local drag strips on the main drag. The most iconic are probably the Ford Cobra Jet Mustangs, which won numerous drag racing championships. Now. Ford based the 429 Cobra Jets on their 385 series of V8 engines. Cobra Make, Engine: Everett-Morrison LS1, IIRC look at the exhaust manifold bolt pattern-------------the 390GT and 428CJ had a different bolt pattern (had some more holes and an tab on the head for the pattern--the standard engines only had the vertical pattern with a bolt at top and bottom of port, Cobra Make, Engine: Kellison Stallion 468 FE, Cobra Make, Engine: Kirkham 427 brushed aluminum with Keith Craft 527C.I. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. Block difference between a 428 and a 428 Cobra Jet - The FORDification In 2020, Ford switched from massive superchargers to an all-electric platform, but dropped jaws by making 1,500 wheel-horsepower a worthy trade-off to get rid of the internal combustion engine.The future of the Cobra Jet is unknown, and its unclear whether Ford will ditch petrol for good and switch to electric, or if that was a one year anomaly. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. The 406 was a serious development for Ford, as it catapulted them to NHRA and NASCAR victories in the mid-1960s. These were sold as part of the Drag Pack option. The later piston, which appears starting around December 1968, is marked "428" and "SUPER" (thanks to Randy Pollock for the picture), and differs from the earlier pistons by having additional metal in the pin boss area. However, there were a few key internal differences between the two engines. Upgrade available to low restriction ram air (seal to hood) and "shaker" hood with hot/cold start-up system, Larger bolts; SCJ had material addedto outside of big end, Retuned damper for strengthened crankshaft, Revised valve springs for higher valve toss speed (6700 RPM), Improved material with modified, polished backside fillet radius, Unique adapter with oil in and oil out provisions for external oil cooler (SCJ only), Unique high (90%+) nodular iron with 10,000 RPM burst strength; high RPM clutch assembly, Higher relief valve pressure, unique oil filter adapter, and external oil cooling (SCJ only), Automatic and manual transmission available, Automatic and manual transmission available.
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