hey i just got a 97 f150 supercab short box 4.2 l but when the engine gets warm it has a knock i got the truck foir an amazing deal so i couldnt say no so i either have to rebuild it or find a new one and its really hard to find a 4.2 cause they are most likely all blown up so what would i have to change to put a 4.6 or 5.4 in it? thanks guys

 

if your swapping to the 5.4 or 4.6 your gonna want to consider a stronged tranny with it... cleanest way to swap is to change the motor, trans, puter and harness. basically get a donor truck and rape it lol

 

i love the way you put that

 

Your V6 tranny will not bolt up to the v8 engines. FWIW they are both 4R70W transmissions but with different bellhousings. You will need and engine, transmission and wire harness from a v8 truck. If you are going to go forward with the swap find 99+ 5.4 with transmission. The increase in power will put a smile on your face.


JMC

 

hey thanks foir the help guys will i also need a new driveshaft and rear end ???

 

In all fairness, sell your current truck and buy one with a V8, if that's what you're after. Overall, it will be much cheaper, less of a headache, and just plain sensible. IMHO of course.

 

Add some 50W oil to remove the knock and sell it for a great price (AS is Where is). Then you'll have the money for a 4.6 or 5.4. You should get at least 4k for your truck which will allow you to find an upgrade!

 

... and if it has any leaks, just throw some sawdust in there. JK of course...