Boss 260 vs Boss 290 - Ford Forums

Luke Plaizier · 01-28-2003, 02:34

What are the engineering differences between the 260 and the 290?

The Compression Ratio is the biggest indicator that the internals will be slightly different - even if it's only the pistons themselves. Of all the bits they list for the Boss 290 at www.fpv.com.au, can we assume that many of these bits are also bolted into the Boss 260?

The REAL question though, is how many people might consider slotting in a Boss 290 Cam after the warranty expires (as long as the ECU can feed the extra fuel) to make up some of the gap between 260 and 290kW ?

Lukeyson

Aussie Pete · 01-28-2003, 15:54

Compression ratio, camshafts, and ECU are the differences I know of. The comp ratio would probably account for a lot of that 30kW.

If I had a 260 my attention would be on bolt-ons - exhaust would give at least 20 of those kWs straight away for around $3000 including headers.

mkoesel · 01-29-2003, 08:53

Anyone have part numbers/prices for the heads, valvetrain parts, and intake yet? There is a huge pent-up demand for 5.4L performance parts in the US.

Luke Plaizier · 01-29-2003, 13:26

OK, the exhaust is another question. Does the Boss 260 and Boss 290 share a common Exhaust? Having a single exhaust component would make life a lot cheaper for FPV.

So how did they up the compression? Changing the deck height? Milling the Head? Or fitting different pistons.

If it's all head-work, I can see this as being a pretty cheap factory-spec upgrade path for XR8's.

If FPV will deal with off-the-street customers, then I wonder how many XR8 owners might consider having FPV do this work in the future?

Lukeyson

mkoesel · 01-29-2003, 13:41

The compression ratio is raised in the GT by using domed pistons.

YOOT · 01-29-2003, 14:30

As far as I can remember - you can't buy anything FPV unless you own an FPV. That means you won't get FPV parts unless you can supply proof you own a FPV (like VIN).

mkoesel · 01-29-2003, 14:39

94ED,

With FPV/tickford now building the higher volume XR8 motor (Boss 260) I am hoping the parts would be much more plentiful and accessible. Are you sure a VIN is required for purchase of Boss parts?

8EHiND · 01-29-2003, 22:45

That rubbish, what happenes to all the people that want to take in their EFs etc and get them FPV'd. Like in the olden days with Tickford - take in your EF and come out with a Tickford XR8

YOOT · 01-29-2003, 23:52

I hope its not either but I seriously heard that one a while ago, and it was from some one important on here. It stuck in my mind because it struck me as stupid.

I think the whole idea behind it was to make FPV vehicles more exclusive.

Ofcourse I could very well be wrong, feel free to prove me wrong.

mkoesel · 01-30-2003, 08:29

Another thing is their are now rumors of the BA Fairlane or LTD getting the Boss 260. So that would be another mainstream use of Boss motor and thus more common parts.

How many Boss motors will Tickford be building a year? Seems the number would be well over 5000, probably closer to 10000 maybe? That's a pretty high volume product to try and keep "exclusive". I'm sure their will be plenty of parts to go around... (fingers crossed)...