how much quicker in the 1/4 is a 2wd rc then a 4wd ec that has the same motor trans and gears?

 

probably about half a second to .8 I ran a 15.1 in my ec 4wd and for the same mods I had at that time a rcsb 2wd would run a low 14 like 14.2-14.4

 

Couldnt have said it better!

 

figure like another thousand pounds give or take . thats a good second in the 1/4 mile if you go by the whole every 100 pounds is a tenth

 

I would say that is dead on. We had a Avalanche GTG last year at Bowling Green KY(Beach Bend Raceway park) and the 2wd AV's were .5 to .7 sec faster with simular mods.

 

so, assuming you could somehow produce the same 60ft, are you saying i could be in the low 12's?

 

If identical mods were done to a simular but 2wd truck and you had enough traction, I would say so. Just my $.02 from watching others at the strip.

There were a lot bone stock trucks racing at Beech Bend that day. A totally stock Z-71 AV would run 17.1-17.2. A stock Z66 would run 16.5-16.6.

 

i think i misunderstood. i thought you were saying the same truck running in either 2wd or 4wd. my bad.

 

The 4wd tranfer case eats up power in addition to the weight difference.
.02

 

does 4x4 eat power in 2wd?!

I think it would make less of an effect on the HD denali though.

something that heavy and powerful wont notice a door missing
Think sport bike with fat chick on it vs a tank with a fat chick on it