Discovery 2 LS Conversion
#1341
I'll be able to answer my own question in about a month.
#1342
Have you driven a 5.3-powered Chevy truck, a Discovery 2 with a Rover V8, and a Discovery 2 with the 5.3? I'm thinking with a little less weight than my last Silverado, my '03 Disco might actually feel rather eager in traffic by comparison.
I'll be able to answer my own question in about a month.
I'll be able to answer my own question in about a month.
my 5.3 is stock no performance parts. It drives great. Did not build it for speed.
#1343
Fun thought experiment, and I'd watch a video on the comparison, but acceleration is as much a factor of gearing and tire size as the weight-to-horsepower ratio. The Disco has a 1.2:1 transfer case, which will slow down acceleration (as the transmission output needs to turn 1.2 times to turn the driveshafts 1 time).
The following users liked this post:
rynoman1 (03-03-2023)
#1344
Is Rover MAF necessary?
Anyone know why ACE recommends using the stock Rover MAF in line with the much larger GM MAF and 4 inch throttle body. After my dyno tuner removed the 3 inch Rover MAF the motor ran better and picked up 50 horse power with just that change, indicating that air was flowing more freely through the intake system, which is what the motor wanted and needed.
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
The following users liked this post:
CPTKAOS (03-20-2023)
#1345
Anyone know why ACE recommends using the stock Rover MAF in line with the much larger GM MAF and 4 inch throttle body. After my dyno tuner removed the 3 inch Rover MAF the motor ran better and picked up 50 horse power with just that change, indicating that air was flowing more freely through the intake system, which is what the motor wanted and needed.
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
#1346
Anyone know why ACE recommends using the stock Rover MAF in line with the much larger GM MAF and 4 inch throttle body. After my dyno tuner removed the 3 inch Rover MAF the motor ran better and picked up 50 horse power with just that change, indicating that air was flowing more freely through the intake system, which is what the motor wanted and needed.
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
I drove the Rover home from the dyno tuner about 125 miles without the Rover MAF installed and noticed no drivability issues or warnings lights on the dash. Why run the stock MAF if it is going to strangle the LS? What info does the Rover MAF provide to the Rover PCM, if any?
I’m vexed by this one.
LM4 with Truck Norris cam, by the way. Otherwise very stock.
Update: Further research has revealed the MAF helps control shifting in the trans. So what’s the solution???? Run the stock Rover MAF and give away 50 horse power but get better shifting, or don’t run the Rover MAF?
What harm can be done to the Zf4hp24 transmission if no stock Rover MAF is used?
The following users liked this post:
CPTKAOS (03-22-2023)
#1347
The following users liked this post:
04disco2va (03-22-2023)
#1350
Not that I can tell. I'm in sport mode 90 percent of the time. The kickdown is more responsive. When I want it to be less aggressive I will switch it off.