300+kw V8 Engines - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

XR_Strider_GuY · 02-03-2002, 17:14

After a detailed read of the VTII GTS Commdore and the 300kw V8. It's got me thinking about our current 5.6L windsor.

It is fair to say that the GenIII incarnation can be upgraded from 225kw to 270kw fairly easily, but to get 300kw the GTS uses an enhanced LS1 engine straight of the Callaway parts catalogue called the C4B. With significant CNC porting and head work and forged pistons if i'm not wrong.
I'm just wondering if the 5.6L windsor is at it's full potential at 250+kw (i know it's got more than 250kw) or whether they can make this block produce 300kw equaling the C4B Block.

I know Ford will comeout with the new engine that will compete directly but i'm just wondering if we can actually produce a genuine 300kw Windsor aftermarket wise in the meantime.

Falchoon · 02-03-2002, 17:21

I'm sure 300kw is achievable but the trick is to have driveability and reliability as well. Remember this is a production car we are talking about that needs to be driven daily in all sorts of conditions not a weekend strip warrior (a la Mr Jucy XD).

XR_Strider_GuY · 02-03-2002, 17:25

Quote:

Originally posted by Falchoon
I'm sure 300kw is achievable but the trick is to have driveability and reliability as well. Remember this is a production car we are talking about that needs to be driven daily in all sorts of conditions not a weekend strip warrior (a la Mr Jucy XD).

yeah true thats what i mean, basically equivelant to the GTS power plant refinement wise.

Martin · 02-03-2002, 18:31

Well its got a decent intake, and stroke, so it just needs decent heads and maybe a cam.

The GT40 heads were good 15 years ago, they just wont cut the mustard these days....

Aussie Pete · 02-03-2002, 21:03

Agree with Martin. The GT40P heads are the limiting factor here. Even the GT40X heads are a bit sad for the power you're talking about. Basically the bottom end of the engine in the 5.6s is good. Needs improvements above this line though to get higher numbers, key thing being the heads.

My engine makes the 300+kWs, however I would never consider the engine to be streetable for a factory car.

discokin6 · 02-03-2002, 21:53

Why not make a 5.6 Boss? Get your hands on a decent set of Cleveland heads, make up a manifold adaptor, whack in an identically ground cam, but for Cleveland valves (IE same duration, same lift, etc).. and you'll have yourself something that'll beat Chevrolet's offering hands down..

What I dont understand is, why Ford dumped the Cleveland in favour of the Windsor in the US..

AV GT · 02-03-2002, 22:20

I was down at a Ford Performance Shop today doing some runs.

The owner was showing me his state of the art Engine Dyno room
and we happen to be looking at some engine horsepower figures from some 351 Clevelands.

1) First one 411 fwhp on the chassis dyno it was 309 rwhp

2) Second One was 573 fwhp on the chassis dyno 450rwhp

Sort of humbling isnt it.

Mr Jucy · 02-04-2002, 02:39

300kw should be easily acheivable with out ending up like mine

anakha · 02-04-2002, 03:11

Like Martin said what these engines really need is a better head.

AFR185, TFR TW, Canfield/Avenger. Any of these heads would be a significant improvement on the GT40p even with the work its had.

Additionally I think the GT40 lower is too small for a worked motor even with the bit of porting and the different upper. Something like an Edelbrock Performer RPM or the TFS Track Heat would be much better suited.

XAHardtop · 02-04-2002, 03:23

Quote:

Originally posted by discokin6
What I dont understand is, why Ford dumped the Cleveland in favour of the Windsor in the US..

Think that emissions was the main issue.

Most of the performance heads now on the market are Cleveland style with big ports etc so natural evolution has kinda made the boss style motor the goer.