309 six swap

M

Miguelito

I have a 1996 F250 which a previous owner removed a 5.8 V8 and put in a 300 six.
It starts but does not run right. What do I need as far as sensors or wiring / computer do I need to make her run right?
 
Miguelito said:
I have a 1996 F250 which a previous owner removed a 5.8 V8 and put in a 300 six.
It starts but does not run right. What do I need as far as sensors or wiring / computer do I need to make her run right?
Click to expand...
For a maf motor you will need all of the sensors, if are not sure you can get an older speed density ecm which will work good with minimal sensors, 87 to 91 would be the best option
 
As far as i know an emission delete or lack of wont cause the 87 to 91 to lock timing and run rich, but i would have to verify
 
Tbone3366 said:
As far as i know an emission delete or lack of wont cause the 87 to 91 to lock timing and run rich, but i would have to verify
Click to expand...
'90 factory ECM/ MAP runs well with emissions deleted, mixtures stay correct, economy improved and excellent.
 
My 87 f350 with the full emission delete still rocks normal fueling and has ignition advance without the quarterhorse installed but dies have the check light
 
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