1-2-3 choose
Coming from a Detroit iron background - bore / stroke / torque make it all happen.
That said - it's the 2UZ FE that is the chosen one - which - is the platform that Toyota chose to use in a Racing Program - so I've read.
For a drop in swap - the complaints are 2:
1. Extra 82 lbs. weight over an Alloy block.
2. Extra height of the 'Torque Maker' manifold [ like the 'Tunnel Ram' manifolds of 427 fame - I say put a 'blister' on the hood - enjoy]
The iron block is very 'stable' - weight gain is marginal - move your battery
to the trunk.
The cylinder heads from all accounts - have larger ports / flows more / flows better than the 1 - 3 Uzzies in stock form.
All but the early 1 Uzzies need con rod / piston upgrades and if you're going to the trouble of changing out rods - throw in some forged ceramic top coated pistons - hell, read the Thread on Crankshafts 'n get the 3.31" crank stroked
.25" -> 3.56" ...... 4.6 Cobra is 3.55"........ 5.0 Mach 1 is 3.80" .....Navi 5.4 is 4.17"
4.7 2 UZ is 270+HP / 300+torque stock - how fast do you want to go ?
With Manley Rods / CP pistons and a single Turbo - stupid 5/700HP.
The Cobra guys are burning pistons at 600HP - belt drive blowers are
shattering the oil pumps from harmonics - head cooling on #7 & #8 causing detonation - rod bearings wiping as pump pulls all the oil out of the pan - timing chains pulling oil out of the pan - huge heating problems on stock and modified engines - two separate kits just to address coolant flow - they're still working on eliminating cavitation behind the combustion chambers [air pockets] now thinking of using a reverse flow pump - not out yet.
http://tinyurl.com/ythzdk
On forced induction engines - Ford SVT has gone back to Iron blocks / alloy heads......hmm.
Their Boss 5.4 NVH cyl. block is about 212lbs. - Noise/Vibration/Harmonics.
Bore x Stroke:, 3.552 x 4.165 inches / 90.22 x 105.8 mm
The 2 UZ is 94mm/3.70" x 3.31"
'Ultimate' engine for me ?
The 2 UZ FE camshaft belt drive system on a 5.7 Tundra motor > it is an Alloy block < and sports a 4.02" stroke - 382HP stock...... sold baby!
I don't want a chain driven valve train - whipping / airating / heating / pulling it out of the pan area - thank you - it is a big step backwards for Toyota...... but the whiners on the Tundra Forums can't seem to remember to change the drive belt at ..... like 80 thousand miles for christ sakes ?
So now it is the weight of the chain 'n sprokets 'n tossing the oil around - airating the oil - adding extra heat to the oil - ......... yay.:rant:
Will it be possible to fit the 3.70" bore 2UZ FE belt drive to the 3.70" bore
5.7 shortblock ?
I don't know yet - but if it is possible - I'll own it eventually - stroke is torque and slams you back in the seat - torque kicks ass.
But...... I haven't the physical dimensions of the 5.7 yet.......... that 5.4 Navi engine is one tall mutha without the intake on...... they are lowering their crossmembers to fit them into Cobra Mustangs........ and hassling with intakes
so.....Until then - it's The 2 UZzie FE for me.