What would top speed be if...

[jtbo]

We take standard 360 and tuck 2 valve evo under the bonnet?

Of course theoretically speaking as nobody can't afford such.

Evo is capable of 9000rpm, but power comes out bit earlier, that should help a bit with stock gearing being bit short, but would it be able to get 7500rpm at 5th, I reckon it had peak power at around 8000rpm and it makes something like 320hp with plenty of torque, but with quick calculation it would be something like 280kph+ would 360 shell go that far and will windshiled gave in before reacing that fast?

[volvodspec]

i know a dutch EVO head converted redblock, 330/340hp NA, no ideas on what figures though. it has;
2.7l stroker crank
individual throttle bodies
standalone ignition incl 4-coil ignition system

don't think a stroker can get to 9000rpm even with EVO head but would be fun

M47R gearbox; 205/50/15 tyres, and the later 3.64 differential should give around these figures in kmh
5th
180 5254rpm
200 5828rpm
220 6411rpm
240 6993rpm
260 7577rpm
280 8159rpm
300 8742rpm
320 9324rpm

4th
160 5695rpm
180 6407rpm
200 7119rpm
220 7831rpm
240 8543rpm
260 9255rpm

with the 300's shape i think you'll get to go harder in 4th and maybe change gear at 9000rpm to see if it would still pull in 5th, don't think the gearbox will like it though

[jtbo]

I just wonder if rolling and air resistances would be more at those speeds than engine output, even it is a lot of power, it is 'only' bit over 300.

My current setup (virtual) has 3.36 rear end and 185/60/14 tires, probably close to those speeds and rpms what you posted, but will there be power enough to overcome resistances is main consern.

I know tires are quite close as at 280kph there is not much more grip either, so it would not help even I would up the power, still aero is not finished work and rolling resistance is bit of question, at lower speeds it is seemingly ok(ish).

Quite ridiculous with those tyres and standard suspension actually, but pretty fast, starts accelerating after 60mph, below that mostly wheelspin

Tested bit here, it is truly scary and road feels very narrow at above 230kph, which is something in mph, 130?
http://rfactorcentral.com/detail.cfm?ID ... 0Run%20USA

Here is broken copy, I have fixed some of it, but need few tweaks until I put up new one, some cars work, some don't some don't have all the engine upgrades avaivable. MJ is responsible from model and most of the parts.
http://www.rfactorcentral.com/detail.cfm?ID=Volvo%20300