Since I’ve gotten the 4 speed ( T-10 from 1967 Shelby) in the Mustang, I’ve been driving it a lot more. I’m surprised at how much of an improvement it has made in the drive ability. Of course there is more power going to the ground which is remarkable and the RPMs are put to much better used. The original three speed top out pretty quickly and nothing left but engine noise.
Of course with more power hitting the ground, my current tires (wide and hard) tend to grip a lot less and spinning them through 2nd gear is common. That will required some new, softer tread before long.
After driving the Mustang a few days in a row, I took the Vette to work. Now you would expect there to be a difference, especially with the 120 hp disparagement in power the Vette (about 420) and the Stang (about 300 – maybe a bit less) , but what I notice is how both cars arrive at top speed.
Both car’s like to launch, but the Vette does so with much less rear hunching then the Mustang. The Vette feels lighter as it gets up to power – less down force on the road. The Mustang is much different. You can feel it, feeling the road. I can actually feel the power longer and deeper in the Mustang as it move on up through the RMPs and the gears.
I think I’m ready to at a tach to the Mustang, I need to see the RPMs it’s turning out and then I’m going to have it dyno’ed. It will be a good baseline before I get the 351 CJ head and intake installed.
Thanks for reading
Tim
