Difference between EF XR6 & Standard I6 Engine - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

PEGASUS · 08-14-2002, 21:01

Hi Everyone

I have an EFII Fairmont I6. Want to get more power from the engine but don't know if I should be using the XR6 engine as a base or the current engine.

Is the I6 block the same for both or is there any difference.

Thinking of getting an XR6 head and cam and fitting this to the current engine. Possibly some porting will be involved. But if I were to transfer the XR6 gear to the current engine would this be advisable. What other parts may I require?? Or simply is it worth buying a new EF XR6 engine and putting it straight it with computer. Heard they are only around $1500 from Ford.

Any help would be appreciated.

61sg · 08-14-2002, 22:20

The short motor(block,crank,rods,pistons) is the same for both

cogo_81 · 08-15-2002, 01:58

[QUOTE]Originally posted by PEGASUS
[B] Heard they are only around $1500 from Ford.

Dont know about $1500 mate, you might pick a second hand one up for that price if your lucky

Ghia · 08-15-2002, 02:01

Its probably not worth spending 1500 bux to get a few extra kw's , just work up from what you have. The same money you would have to spend on the ford bits, would get you better part in the after market. Just imo.:dead:

Futura97 · 08-15-2002, 02:01

Also the Diff is different. XR's had a 3.45, so don't expect to be as quick as an xr6, due to the diff factor.

But if i were you, i would get the head, cam and porting done, and then the diff ratio done.

Good luck mate

61sg · 08-15-2002, 02:15

Long EF or EL motor is no longer avaliable from ford. short motors are about $1900.00 however they are the same as a std motor. I would go the cam and head.

by the way the inlet valves is the same on xr as std motor. the cam,exh valves and head is different. new xr heads dont include valves either.

PEGASUS · 08-15-2002, 03:37

Thanks for the input guys.

Think I will be investing in an XR6 head (some porting) with the XR6 cam. Do I need any more parts for the change over?? Will the cam be still suitable to match the head or will I need a different grind?

xf_xr6 yes I will be investing in the diff as well. Got quoted by a diff company in Sydney $1500 for a brand new LSD centre and 3.45 gears. Sound reasonable???

Futura97 · 08-15-2002, 08:49

Sounds like alot to me... I got a diff for an XF for $100, so there you go.

Seriously though, have a look around the wreckers and see if you can get one second hand. I'm sure you could source one cheaper than that.

PEGASUS · 08-15-2002, 20:59

Will check our the wreckers today.

Will get all the parts all at once I guess. Will let you know the result.

Ford_Freak · 05-05-2004, 06:50

here is a question for u guys.... what is the difference engine and drive train wise... between a 1994 XR6 EF and a standard EF GLI...