7000 is a marker for strength, but I would like to be able to safely pull perhaps 6300 (6400 would be very happy). I looked at mean piston speed data and I was around 3500 at 6400 where 4000 was the max for a performance engine (not race). I want to build something strong - it is rather expensive for me, so it needs to last some. 7000 is a valve train goal. We will limit it once we see the dyno.
Here is some data on the 289. 301 @ 5900
Hi-Po 289 Shelby 289 Gains
RPM HP TQ HP TQ HP TQ
2600 121 245 132 266 11 21
2900 136 246 147 267 9 21
3200 159 261 174 285 15 24
3500 185 277 198 297 13 20
3800 207 286 221 306 14 20
4100 224 287 240 307 16 20
4400 240 286 259 309 19 23
4700 253 283 277 309 24 26
5000 262 275 287 301 25 26
5300 269 267 296 293 27 26
5600 272 255 300 281 28 26
5900 273 243 301 268 28 25
My understanding is Shelby Factory cars made as high as 380 hp. How high were they turning those? I assume they were using most of it. We know they were were capable of 150.
My car is running 3.54 JAG. I am concerned with the 3550 strength, but I'll fix it when I get there.
100 @ 4500
133.6 mph @ 6000
135.9 mph @ 6100
138.1 mph @ 6200
140.3 mph @ 6300
142.5 mph @ 6400
144.8 mph @ 6500
4th - plenty for me - Can only imagine what it is going to feel like.
I plan to use aluminum fly wheel. I want it to rev quickly, throttle match easily, and feel very connected to the steering and suspension. I have not run the lower gearbox ratios.
It occurs to me Shelby had to engineer around the Webers and Cam?
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