Jeep TJ PCM for Stroker Six

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Burnsmacdonald
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Learning to use the board
Posts: 38
Joined: February 4th, 2015, 9:54 am
Stroker Displacement: 4.6L
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: TJ

Jeep TJ PCM for Stroker Six

Post by Burnsmacdonald »

I have a 98 Jeep TJ, which I am converting from a 2.5L 4cyl to a 4.6L stroker 6 - the usual formula, 4.2L rods and crank, 30 thou overbore, comp 4x4 cam, harland sharp roller rockers, decked, blueprinted, ported and polished.

The 4.0L came from another 98 TJ and when I salvaged the engine, I also took the PCM and engine wiring harnesses

My question is, will the PCM work as is? Or will I need to reflash it (ie at a dealership)? Any problems running a stock PCM with a stroker six?
akadeutsch
Movin on up ^
Movin on up ^
Posts: 312
Joined: February 22nd, 2014, 7:27 pm
Stroker Displacement: 4.6
Vehicle Year: 1981
Vehicle Make: Jeep
Vehicle Model: CJ8
Location: New Prague, MN

Re: Jeep TJ PCM for Stroker Six

Post by akadeutsch »

It has been my experience that the stock 4.0 ECM will run a 4.6 stroker just fine. At least mine is.
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