thek

c4's were mated to 4.1 crossflows from the factory wer'nt they? Was the xf 3 speed a c4?

the_jup

G'day as far as I know Ford used the Borg warner t35 in all its sixes right up and including some EA's in its six's. The C4 and the FMX were used in the v8's.

gregaust

The XF will most likely be a BW40 ..XE-XF had a BW40 and EA"s had a BW51 which are basically later model 35's with minor improvements.

C4's were mated to sixes from XY-XB pre crossflows and XC -XD crossflows.

thek

thanks guys,
So how hard is it to put a c4 on a crossflow that had a bw on it originally? Is it a straight bolt on or is there an adaptor required?

thanks

GT 0909

Ford put C4's behind some 3.3/4.1's in XC's and XD's for extra durability, especially in taxis. Look for ID plates on the transmissions with ID codes starting with 'PEE' or 'PEF' - these are C4's. If they have a 6-cyl bellhousing, you're in luck. Of course, V8 C4's also started with the same code. I think you can just change the bellhousing (and torque converter of course), but trying to find them won't be easy. Just go looking for ex-cabs.

By the way, if the ID code on the plate starts with something like '78DA' (or similar), it's a Borg Warner 35.

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gregaust

It is easy to fit a c4 to a crossflow..No adaptors reqd,just get a 6cyl c4 which will have the correct bellhousing.The tailshaft and rear mount is the same..You will need a new flexplate as the BW one is different,cooler lines to match the C4 and a
T-Bar to match the C4 also.