I'm not trying to offend anyone here. I'm not picking on the V6. Please note my original post did not denote V6 vs. V8, it's simply tied to the stated example. Entry level simpy means the vehicle that costs less as it is sold. In most cases where a V8 and a V6 are offered in the same model the V8 costs more and is often times more desireable. They typically carry that higher price throughout the life of the vehicle. Are there exceptions to this rule? You bet, a Boss 302 will most likely resell for a higher price than a Mach 1 with a larger engine of the same year. A 302 Z28 Camaro will probably command a higher price than one with a 350 the years they were offered. I just can't think of an instance where the V6's does this to a V8. A Ford truck might actually be an exception. The V6 EcoBoost might bring a higher price than the 5.0 liter. I don't know, I haven't looked into it.
As far as the auctions goes, 2 cars, same make and model, one with a High Horsepower engine verses one that doesn't make as much, all else being as equal as they can make it, I believe the nod goes to the higher horsepower car. These cars often have the Z28, GT, Yenko, Boss, RT , Hemi or whatever designation that goes along with it. The package is tied to the engine, not a lot of special packages tied to the smaller engine when a larger one is availabe. I'm not hung up on V8. I admit I am a little stuck on H.P. One of the other posters stated his V6 Camaro would out perform (handle) it's V8 counterpart, I don't believe this to be correct and that's where this conversation began.
As far as bringing the Viper into the conversation, are you suggesting that should they have offered a Viper with a V6 it would resell for the same price as the 10 cylinder? By the way the HellCat doesn't have the largest engine offered in th line, just the most powerful. It might be fun to watch the 2015's Mustang's with the new I4's that are turboed vs. the GT. That little EcoBoost is an awesome performer, no questions asked. Which do you think the Blue Book will favor 2 years out.
Auctions are only as good as the people in attendance spending money. A car that wouldn't sell at the reserve at one auction might double that price at the next. Should you have had your car for sale right behind the musicians car do you think it would have brought a higher price. Maybe so, probably a much better detail than the mucisian. A good detail is definitely a plus.