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Anyone Swapped a 4.6 long block for a 3.9?
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Topic: Anyone Swapped a 4.6 long block for a 3.9? (Read 869 times)
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kjj0506
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Anyone Swapped a 4.6 long block for a 3.9?
«
on:
January 02, 2007, 04:55:44 »
I have an icreasingly ticking , tired motor and am wondering if this swap is worth considering. I would probably try to find a motor out of a wreck to save some dough instead of a reman.
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Ken
1990 RRC in constant flux
95 4.2 , Carter Fuel Pump , Powermaster 130 Amp Alt. , 2" OME Springs , Pro Comp ES9000HD's , 1.25" Spacers , Zirgo Elec Fan ( no more clutch fan ) , Remote Start , Aux Ligts , 110 A/C , Nice Stereo , Custom Bumper , Mostly New Bushings
Range Rover Blues
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Anyone Swapped a 4.6 long block for a 3.9?
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Reply #1 on:
January 04, 2007, 15:59:23 »
I've bought an LSE for parts and it has the later 4.6 lump in it with the '93 LSE front end/pulley anciliaries so they must fit. IIRC the end float of the camshaft is controlled by a plate on later engines and the chain cover on early one but it's no big issue.
If you find a 4.2 that's another option.
The one problem to get over is that the EFi won't cope with the bigger engine, according to RPi, who are trying to sell the chip, you need a Tornado ECU upgrade at about £300 :shock:
Anyway, the RPi website is a mine of usefull information on the tuning up of the Rvoer V8.
try WWW.rpiv8.com
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Blue, 1988 Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.
kjj0506
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Ticking motor
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Reply #2 on:
January 05, 2007, 04:06:51 »
I think I may just freshen and match port the heads , swap lifters and cam ( very mild - i hear there are some that actually liven up the mill while not decreasing mileage or drivability ) , put a chain on and a water pump and go drive places. Instead of spending a bunch of down time with the 4.6. I have been looking for a dead donor and have found nil.
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Ken
1990 RRC in constant flux
95 4.2 , Carter Fuel Pump , Powermaster 130 Amp Alt. , 2" OME Springs , Pro Comp ES9000HD's , 1.25" Spacers , Zirgo Elec Fan ( no more clutch fan ) , Remote Start , Aux Ligts , 110 A/C , Nice Stereo , Custom Bumper , Mostly New Bushings
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Anyone Swapped a 4.6 long block for a 3.9?
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