I'm sorry...for the french...the next in english...

 

0-60 has more to do with gearing and traction than total hp, with equal traction and gearing the 5.0 will be faster no matter how tweaked the 4.2 is..
Alexjag has done great work with his car and tune but it is not stock by any means and runs slower et and mph than my bone stock 11 convertible.
Im sure with equal mods the 5.0 would destroy the 4.2 at any speed..

 

Yes totally, tuned 5.0 will be a good amount faster on top end. My point was to compare a tuned 4.2 with stock 5.0 for those who wanted more power out if their 4.2. I drive 5.0 cars quite often and stock low to mid range feels very similar to tuned 4.2 , 0-60, 1/8mi and dyno numbers show this as well around 500 + torque for tuned 4.2sc , and it is what stock 5.0sc cars make..
btw have you taken you convertible to the track? Don't forget DA numbers at different tracks make a good amount of difference. Here in Southern Ca we don't have a single 1/4 mi track near sea level , calculated DA around 2000ft at track where I hit 112mph and 12.5 , if it was at sea level the numbers would be around 12.3 and 114 mph . Some tracks actually have a negative DA which makes the car even faster..

 

as it says in my sig
2011 XKR Black on Black Convertible (stock)
12.2@115.3 Alamo Raceway,Tx
taken it to track couple times .. Yes your car is pretty close and no one can doubt you have done a great job of making it faster, but it is highly modified (pulley,tune,intercooler pump,cats,thermostat) compared to a stock 4.2.
So we go back to if I did same mods I would be way faster,you can mod anything to be faster but mod for mod a 4.2 will always be slower.
Not important to everyone,a lot dont even care,,to me I would never buy the lesser car unless the price difference was huge and for our cars it really isnt.
But thats just me,like I said above to others that may not matter at all.
This was against a full bolt on Coyote 5.0 Mustang,, treed him and left him..

 

Nice run! Happen to know DA at that time of the run?
I fully agree with you, if both modified 5.0 will be faster.
We ECU tuned XFR a few months ago at it is well under 12 sec with tune and pulley, we added a 50 shot of nitrous and hit 11.4 . Speaking of which are you interested in Remap for yours?
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It was horribly hot so both cars were well off the pace but I met a Trackhawk today

 

How do you properly launch the car???

 

Biggest problem I had with the 4.2L SC in my 2005 STR was not the engine but that they did not have a LSD so you could not use all the power and the tires would spin and then traction control would take over killing all the power.
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I sure dont , it was around 60deg and humid is the most I can remember,,they were asking us to rev our engines
before we got to the staging area because everyones exhaust was leaking water on the track. :-D
As for tune, not for now,,been out of work due to covid (i run sound for large events)
and we are just now starting to plan shows,,probably be end of year before I have caught up on bills and such ..

 

New Corvette was trying to beat me all night long we probably raced four or five times but outcome was the same. Not too bad for the old 4.2

 

I'm impressed! Would you expect the results to be the same for a 1/4 mile race?

 

I would be pretty please with that but, assuming you have a slip, what were the 60 foot times for the Corvette because it looks like it was struggling for traction?

Based on the factory specs of 11.2@123 mph 1/4 mile and 0-60 in 3 seconds the Corvette should be a lot quicker than that over the 1/8th mile. I would expect it to be in the 7's and knocking on the door of 100mph not 8.45@91.46 mph so I would be pretty fed up if I was the Corvette owner.

 

Nice!

 

Good show but I didn't hear the launch control being used by the C8. Also the normal tire heat up. The launch control requires you to turn off all of the traction controls and allows for a 3500 rpm rev hold at the light. Should see high 10 sec to low 11 sec numbers in the 120+ mph range.

 

Ask the man who owns one.

 

You own a Packard?

 

jagtoes now owns a C8, and that's why I pointed to his reply (post #54). He explained the likely reason why that C8 driver lost to AlexJag - failure to use launch control.

 

"Ask the man who owns one" was the advertising slogan for Packard. I had a '52 Packard years ago so your comment prompted a memory. I may be the only person on this forum that remembers the slogan.

 

Nope, why do you think I used those exact words?

The important question is not "do you remember the Packard slogan", but rather "do you remember what you ate for breakfast today?"

 

No clue what I ate. What are we talking about anyway. I know I sat down here to do something but...