Discussion
Depends where you are going after that.
Staying normally arspirated, then fine, up the compression ratio.
Going turbo, then you will want a nice low compression ratio.
Just saying (and ducking at the same time - told the Mrs I could multi-task!).
She then said doing two things at once was nothing - she could do three things at once.....
I pointed out that that was true, so long as two of them weren't map reading and parking
The kennel is remarkably warm for the time of year.....
Sam the Collie looks a bit surprised to see me.....
Staying normally arspirated, then fine, up the compression ratio.
Going turbo, then you will want a nice low compression ratio.
Just saying (and ducking at the same time - told the Mrs I could multi-task!).
She then said doing two things at once was nothing - she could do three things at once.....
I pointed out that that was true, so long as two of them weren't map reading and parking
The kennel is remarkably warm for the time of year.....
Sam the Collie looks a bit surprised to see me.....
^^^^ 
But 4.6 with a bit of comp is a really enjoyable engine N/A as it does sound angry yet still really smooth.
Mine had heads skimmed and block decked so if anything nearer to 4.5 anyway
I reckon with big ported heads and inlet manifold with some bigger trumpets de Cat it could be as much as 325 Bhp or higher. It already has what would be considered high torque figures on a 5.0 let alone a 4.6 at around 340 so it shows the potential in these engines without needing to introduce Turbos.
Ok head work is costly but once it’s done that’s it.
Turbos must be harder to live with and more to go wrong with my simple way of thinking.
But 4.6 with a bit of comp is a really enjoyable engine N/A as it does sound angry yet still really smooth.
Mine had heads skimmed and block decked so if anything nearer to 4.5 anyway
I reckon with big ported heads and inlet manifold with some bigger trumpets de Cat it could be as much as 325 Bhp or higher. It already has what would be considered high torque figures on a 5.0 let alone a 4.6 at around 340 so it shows the potential in these engines without needing to introduce Turbos.
Ok head work is costly but once it’s done that’s it.
Turbos must be harder to live with and more to go wrong with my simple way of thinking.
Classic Chim said:
It already has what would be considered high torque figures on a 5.0 let alone a 4.6 at around 340 so it shows the potential in these engines without needing to introduce Turbos.
Turbos must be harder to live with and more to go wrong with my simple way of thinking.
We'll get you over to the dark side one day my lad, once you've forgotten all about Fred Dibnah... Turbos must be harder to live with and more to go wrong with my simple way of thinking.
4.0 + T = 481.....
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