Recent content by V_TastyTacos_V

Pure ethanol can be as high as 113 octane, and gas is rather low. The additives to gasoline bring it up, but they're using ethanol to do that in place of other additives. We use the (ron+mon)/2 method, so perhaps ethanol has a much higher ron rating than other additives, thus goosing the...

The 383 in my Charger has pistons .140" down. Something like 7.3:1 compression. Think I found why my car's a gutless turd.

What's the build date stamped on the motor?

The car is one unit. You adjust one corner, the opposite moves in the other direction. Sounds like you already have it figured out.

Engine assembly dates have been observed being after the SPD, too.

1/4" difference along a 15" rim equals 1° of camber. Caster is measured by the change in camber when you turn the steering wheel. There is a formula, but if you just want caster equal side to side, just turn the wheel to the left, measure the left wheel the way you have been, turn it right the...

A lot of people can't get more than +1° caster, so when people say get as much caster as you can, it's because it's impossible to get too much with the way our cars were designed. A new Charger, for instance, specs at 9° ±1° caster. So tell us what should the caster be, and what determines...

I think they call that lobe intensity. Regardless of the lifter type, a cam lobe can have a faster or slower rate of lift, and I think one can get an idea of how fast or slow that is by comparing the advertised and @.050" duration values, with less difference indicating a faster, or higher...

Do you know how to convert your measurement into camber angle?

So more positive caster, leaning the tires away from the turn, pushing the tread of both tires into it, is good, right?

What I'm wondering is how can a couple ten thousandths of an inch matter when the cam companies call out for the same valve spring for several different cams, with different durations, and different valve lifts. I also want to know if anyone uses the valve springs that come with new heads, or...

The car has more grip with the tires leaning into the turn, countering the vehicle leaning out of the turn, but it makes it harder for me to steer, and very hard to park. I drove a stock height, tire, and aligned Roadrunner once. It was so easy to steer at a complete stop. I knew it wasn't...

I understand that a racecar wants to have the softest suspension they can get away with exactly for the reasons you mention, and stiffening one end or the other usually reduces grip on that end, but other constraints often force one to have to increase roll stiffness. From the looks of how...

My lowered '69 Dart with manual steering, and as much caster with stock parts as possible, you can really feel the jacking effect on self centering. You can see the front of the car lift, and feel it in the steering wheel. The steering wheel would snap back to center so fast it was a blur...

The shorter upper control arms also induce dynamic camber gain under compression, but it also goes the wrong direction under jounce, so the inner tire is dragging the inside of the tread through the turn. Watching the road tests from the '60s, though, the cars had so much body roll, it looked...