You gotta know you're going to catch a little crap for a 🔄 however, I didn't mean to push your buttons. So for that I'm sorry.
✌
A few things.
I never said a bigger anti roll bar was bad.
I did indicate a bigger anti roll bar without adding a rear anti roll bar could make the car unbalanced.
Thank you for spending all that time helping educate The Forum on anti-roll bars. I wasn't insinuating you didn't have a decent grasp on it.
And you're right, I wasn't there.
What I am explaining is that your description of the event sounded a lot like high-slip-angle snap oversteer.
You can read up on it yourself but the jist of the idea is you are right in saying a bigger front anti-roll bar can better the tendency of a high power rwd vehicle to oversteer... but that's an oversimplified statement in that particular article (it's not addressing any particular vehicle's suspension dynamics). With no rear anti-roll bar and a big front you've got an unbalanced equation.
As you reach higher slip angles, the lack of rear anti-roll bar lets the vehicle weight transfer too much to the leading rear tire. As the leading rear tire loads up it removes grip from the front trailing tire (and by association both front tires thanks to the larger front anti-roll bar) and induces snap oversteer at the limit instead of a more controlled grip transition.
[Another piece of the puzzle is the rear suspension geometry with really short uppers and longer lowers on El Caminos that gives that a & g body shuffle]
That's why the car pendulums even when you put (I assume) lots of opposite lock steering input to correct the slide.
(With a rear anti-roll bar it would likely slide more controlled and "flatter" with less side to side chassis bucking).
Your hard shifting auto absolutely exacerbated that-like you said. As it went from acceleration (rear grip bias) to rolling (grip forward) as it paused and shifted hard, then acceleration (rear grip) again which exceeded the tires (cold/wet/slippery) coefficient of friction- starting the slide.
I am not insulting your driving ability or intelligence.
I am indicating that adding a rear anti-roll bar to a car with a low rear weight balance and high horsepower and big front anti-roll bar will improve the balance.
Balanced suspensions work better just like Balanced brakes work better: As demonstrated by almost every successful track and autocross car. Very very few well developed cars in either of these desciplines lacks a rear anti-roll bar. To further reinforce my thoughts; if balance wasn't a problem the aftermarket wouldn't build so many "A" and "G" body rear anti-roll bars.
Believe it or not I spent some time at the Nurburgring taking some advanced autocross in Caterham 5's (turns out I hit lots of cones in my first RHD car 🤣) Our instructor spent a decent amount of time on suspension theory and then forced us to experience snap oversteer (over and over) so we could understand the dynamics of it.
I still won't even pretend the be an expert on El Caminos and there are SO many better drivers and suspension experts than me. But I can make some well educated and scientifically reinforced (but truthfully somewhat assumptive- in the case of your car) statements on suspension balance.
You know I love ya and just want you and Hickey to not be dead 😘