I was just reading an old Road and Track article about the 280ZXT's. The automatic did a 15.2 and the manual did I think a 15.9. This was due to that fact that the 5-speed motors didn't have compressor bypass valves to keep the turbo spooled up. Every time you shifted, there would be turbo lag. A BOV makes a big difference on these cars. The top speed was 129.
The early 240Z's did a 17.1 w/top speed of 122.
The 280Z did low 16's but I don't know exactly or the top speed. I had a '77 280Z that had a header/exhaust, Crane ignition coil, and K&N air filter and it would do 145mph according to the speedo. I calculated the speed based upon rpm, gears, and tire size and came up with 128. That shows you how far off the factory speedo is. I trust that the tach is more accurate than the speedo. Anyway, anyone else please provide more accurate info.
Ian
> I was wondering if anyone knows the 1/4 mile
> times of the original 81-83 280zxturbos???
> their top speeds or the top speeds of all
> original z's??? THANKS