rocky3451

I just bought a 89 GT and its ignition is completely stock. It doesn't even have an aftermarket exhaust. The manifold is stock and the heads are old and rusted. However, when I floored the car it went to 7000 rpm, was still pulling, and was begging for more. I thought a stock motor would be conked out by 6000. I've revved it to 7000 a lot and to 6500 even more. The car also runs like crap below 2000 rpm. I'm sure the car has a chip, but can a stock bottom and top end rev to 7000 and still pull?

AdderMk2

you werent hiting 7k... the stock tachs really are that innacurate

rocky3451

So if I just get an aftermarket tach will it read accurately?

nitrous_bob

yes.... and thats why a lot of people will tell you , you have to shift into 5th with a 5 speed and 4.10's

the rpm i really car about is shift point. 5200 is a good place for a shift lite with stock heads and cam. when it lites and you react, then actually complete the shift... your about 5500 on the nut

so just an msd shift lite works great. but if you want a tach too... get a monster with the light built in it

no proform.. you wont like it

badlx87

Yea, according to my stock tach, I'm pulling around 9k rpms when I shift lmao. My car is bone stock.