Originally Posted by flavarella
Originally Posted by Mental
D0VE-A = 429 Cobra Jet (CJ) -- You scored well
D0VE-A does not equal a 429 Cobra Jet engine.
The heads you have are early 1970 engineering revision castings that first appeared on standard issue production 429/460 engines in late 1969 for the 1970 model year vehicles. They are the standard passenger car head castings but
they are a very good version of the factory iron heads. Performance enthusiasts seek those heads out for high performance engine builds. Also, the 429 version of these engines were also labled as "Thunderjet" engines.
So, this cylinder head casting number confirms that you have a 429 or a 460 in your 1970 F250 and not a 390 or 428 FE engine, and also explains why the auto parts store help thought your truck "didn't exist." By the way, the plugs that will work for your currently installed truck engine would be the Autolite 45's
or Autolite AP45's
(<---platinum) or the equivalent spark plug in another brand. In regards to the rough running, check your spark pug wires and make sure that you have not mixed up plug wires during the spark plug change.
Firing order is 1-5-4-2-6-3-7-8
You do not have a Police Interceptor engine. The casting number for the Police Interceptor heads for 1972-1973 is D2OE-AB. The casting number for the factory iron Cobra Jet or Super Cobra Jet heads for 1970-1971 is D0OE-R. (1971 PI heads may also be D0OE-R's.) 1970 and earlier PI motors were in the FE engine family.