BP 475 FE For My Mach 1

[cjshaker]

I think 69’s are about the same as ‘67 & ‘68 wheel well openings. (Correct me if I’m wrong) I didn’t want to cut my wheel wells for larger tires so I started off with 29” bias slicks, they rubbed, too much tire growth. I went down to a 28” Hoosier and they clear fine but put me through the lights at 7600rpm with 4.86 gear. After 20 runs I took them off and went to a 30” radial from Hoosier the one with the smaller roll out. They are actually about 29.5 but don’t grow like the bias tires. They clear ok, have to be a little careful exiting the track sharply with any speed, so far so good no rub marks and dropped 300rpm.

Mike, it's a stick shift car, and as far as I know, radials don't play well with stick cars. Pretty sure I'll have to go to a 4.5* gear to get my desired trap RPM, so I have another spare rear to look forward to, but I was debating on stepping up to 35 spline axles anyway. 

[fastback 427]

Awesome engine! That will rip in your mustang. I have put some miles on mine now and it is a handful to say the least, as it will lose traction going 80 mph bad enough to swap lanes on the highway. Have fun!

[cjshaker]

Awesome engine! That will rip in your mustang. I have put some miles on mine now and it is a handful to say the least, as it will lose traction going 80 mph bad enough to swap lanes on the highway. Have fun!

Jaime, your engine certainly turned out good! I hope you post up some track times when you get them, and stay safe on those roads! I've got a load of changing to do to my car, starting with an 8 point.