Hi there... new to the forum. I have an 08 F150 with a 5.4 (8th digit V). The engine is siezed. While on ebay (I know... i know...) I saw something about the 4.2 being a compatible swap!?

Is this true? What mods would need to be done? Any other compatible engines with minimum mods?

 

stick with the 5.4 that way you will have no issues

 

x2, stick with the 5.4. Especially if you have more than a single cab 4x2 truck, a 4.2 V6 will not a whole lot of power compared to the 5.4.

 

im not knockin the 4.2 my buddy has one in a 2000 f150 with over 130000 on the clock never had a major problem but for simplity stick with the 5.4