hog

Thanks, if the points or info you desire are within the graph its interpolation, if the points are outside of the graph, it is extrapolation.

Other words, if we were given the 6.2 power and torque, and X axis might be displacement, the other axis (Y axis)might be power/torque. Lets say the L86 makes 400hp and 400 lb/ft torque. Then we plot these on a graph, so many hp/lb/ft for every cubic inch displacement. Draw a straight line from the point of origin which is 0,0(Zero,Zero) for both the power and torque.
Now since the L86 6.2's power/torque is known and plotted on the graph, we can find the L83's 5.3's output by "interpolation. The 5.3 numbers will be somewhere less than 400 lb/ft torque and somehwere lower than 400 hp.
We would go up the displacement axis til we hit 325 cubes(5.3L) then follow that line over until we hit the straight line for the power and record that number, then again for the torque. These numbers are what the 5.3 will output by the means of interpolation.

If we were given the power/torque numbers for the 5.3 1st, and plotted that info on our power vs. displacemend and torque vs displacement graphs, and then drew a straight line from 0,0(Zero/Zero) out to both the power and torque per displacement points and then beyond that point, we can now extrapolate what the power and torque output would be for the 6.2 l engine, FROM the data we were given for the 5.3 L83.

"Inter" is from WITHIN the given info, "Extra" is from OUTSIDE the given info.

At least thast what I remember.

Wiki describes it better than my "book".

Interpolation-In the mathematical field of numerical analysis, interpolation is a method of constructing new data points within the range of a discrete set of known data points.

Extrapolation-In mathematics, extrapolation is the process of estimating, beyond the original observation interval, the value of a variable on the basis of its relationship with another variable.
Extrapolation is similar to interpolation, which produces estimates between known observations, but extrapolation is subject to greater uncertainty and a higher risk of producing meaningless results.

Whew!

peace
Hog

silverado6.2

They must have made major changes elsewhere, the 2014 5.3 is rated to tow more than the 2013 6.2 same 6spd, 3.73 gears while the new 5.3 is 355 horse 383 torque and the 13 6.2 is 403 horse and 417 tq. I'd like to see some of the changes when they come out. May just be inflated towing numbers too, or the truck is just that much lighter than the last years.

Vortec350ss

iTrader: (20)

Lighter would be nice!! I'd love to see the new 6.2 throw down some great numbers at the track.

xx_ED_xx

iTrader: (17)

I think some of these guesses are high, I remember seeing the coil packed 4.3 back in 08. did the 4.3 get a redesign or?

hog

The 4.3 got redesigned for 2014 as the 4.3 LV3.

The 4.3 never got CNP or COP until 2014. The LU3 of 2007-2013 used 3 coils where the distributer is placed.

Previous to 1996-2007 the LU3/L35 used the single coil with distributer in GMT400/800 trucks..

2014 LV3 DI/CNP


2007-2013 LU3 4.3 in GMT 900 trucks with 3 coils mounted in the distributer spot


1996-2002 L35/2003-2007 LU3 in GMT400 and GMT800 trucks single coil with distributer


Not sure what you were looking at?

peace
Hog

xx_ED_xx

iTrader: (17)

As i stated coil packed 4.3 and since you stated the years that makes sense. nice to see they are revising it will it be direct injected? looks like an upgrade of the 60 degree 2.8 3.1 3.4 family

hog

OK you said you say a coil packed 4.3 in 2008, with the long wires I assume? yes thats OEM.


Is it direct injected?
As I stated 2014 LV3 DI/CNP. So yes, it will be Direct Injection with Coil Near Plug ignition and still a 90º block with 4.4" bore spacing, just like the L35/LU3 etc.

GM is dyno testing a direct injected twin turbo V6. Expect to see that out on the next couple years. A prelude to the extinction of the V8 engine. I wish they would go super small displacement V8 so at least the engine could sound good. Unmuffled V6's sound like *** IMO.

peace
Hog

xx_ED_xx

iTrader: (17)

Agreed, the camaro v6 sounds horrible

xx_ED_xx

iTrader: (17)

Funny you mention that. I am putting an 8.1 into a 1993 dually. I have the wiring harness from an OBS 2000 8.1. But I will probably end up running an 04 pcm for reliability etc

xx_ED_xx

iTrader: (17)

yes obs 8.1 I have seen 2 of them so far. I may have an under hood shot of one let me do some digging