v8 rover 4.6 with 14cux camshaft

v8 rover 4.6 with 14cux camshaft

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Naldi Lorenzo

Original Poster:

9 posts

86 months

Friday 29th March
quotequote all
Hi everyone,
I'm writing from Italy. I have a Range Rover Classic V8 manual transmission and I would like to install my 4.6 V8.
my 4.6 v8 comes from a Range Rover P38 (it had GEMS injection). I bought a complete "14cux" injection (it comes from a Range Rover Classic 3.9). I want to use the 14cux injection on the 4.6 engine. I will have to use the front crankcase of a 3.9 V8 on the 4.6 engine (I will use the distributor as on the 3.9 V8). the real problem is finding a camshaft that does justice to the 4600 engine!! I want to find a camshaft with the gear for the distributor.... I will use the car on the road and for fun, rallies, and I would like to go to the sand in Africa! a friend of mine has a 2 door range rover with a 4.6 engine with gems injection, I want it to go at least like that!! It has a lot of torque and a lot of power!!!!
I read that the injectors of the 4.6 with BOSCH injection are better than those of the 3.9 and can be used with the 14cux. I think I'll use those. obviously I purchased the 4 in 1 exhaust manifolds by headman. then I'll have the control unit remapped.
The real question is: is it possible to have a 4.6 with 14cux injection that runs like my friend's engine with gems injection? if is possible have more power is better!!! Which camshaft with gear should I use?

thank you all!


Naldi Lorenzo

Original Poster:

9 posts

86 months

Sunday 31st March
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GreenV8S said:
Your best bet by far would be sticking with the GEMS engine management system. Do you have a specific reason to move away from it? It is far more capable than most mid range aftermarket ECUs.

If you want to move away from GEMs, there are many aftermarket ECUs that support coil packs. You would need to decide who is going to tune it for you, and install the system they recommend.

If you specifically want to use the prehistoric 14CUX for some reason, that would be a wierd choice but it would mean you need a distributor. That would require either a preserpentine or intermediate front end on your engine. The intermediate front end would be a far better choice since it provides a much better oil pump and uses a stronger ancillary drive system. These were used on TVRs and Morgans so not difficult to get at the time, but you may struggle to find them these days.
I will use a 14cux because this engine will go under the bonnet of my range rover classic. if you use a gems the air conditioning compressor are on the left, in the rrc is on the right, i think that is different the position of cooling fan and i don't have a gems injection complete... i see thet a lot of people use 14cux with 4.6 under the bonnet of rrc or defender or in proto of Comp Safari

Naldi Lorenzo

Original Poster:

9 posts

86 months

Tuesday 2nd April
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GreenV8S said:
I think you mean you want a perserpentine front cover. That is not the same as using a 14CUX. You'll need somebody to tune it in any case. I suggest you decide who you want to do that and take their recommendation on which ECU to use.
I will use a front carter of 3.9 to use a distributor. If I use the 4.6 carter I can't use a distributor.
But my awner is: What camshaft you use in a 4.6 with 14cux?

Naldi Lorenzo

Original Poster:

9 posts

86 months

Friday 5th April
quotequote all
GreenV8S said:
If I'm following the OP correctly, they want to keep the preserpentine timing cover because it fits their ancillary layout. I suspect they are starting from a RR Classic 3.9 with 14CUX and so on and want to keep as much as possible, just swapping the long engine.
yes, i start from a RRC 3.9, and i I want to keep as much as possible.