My 85 V6 I have (use) the orginal computer and was wondering do they have revv limeters or speed limeters?
If so are they fuel cut or spark cut?
It's a 5-speed 2.8L (with 3.4 engine).

 

ive had my 85 2.8 for a year and half, my speedo is digital so it only goes up to 136kmph but i was pulled over by a nice man in a white and blue car that said i was going 177 and still pulling away, and i know ive gone faster. id say the fastest ive gone in that car was 190-200 where the 2.8 engine just cant push the car faster. as for the rev limiter, i can set the odo to read #'s for the tach and i dont think there is a rev limiter.


as for tpi i dont know

 

translate in MPH please

 

136 kmph = 84 mph
177 kmph = 110 mph
190 kmph = 118 mph
200 kmph = 124 mph

 

A TPI's built in rev limiter is the fact that it runs out of breath at 5000 RPM.

 

The chips I have seen have a 10,000 rpm rev limiter, and the lower performance cars have a 110 mph speed limiter.

 

My 3.4 with the crane 272 cam(That's 216*/228* with .454''/.480 @ .05 with 1.5 rockers) with my ported polished heads, ported 94' 3.4 manifold, ported (2.8L) plenum with (my home made) plenum spacers, Polished + reground stock valves and 1.6 rockers I still need to buy (should be good for .481''/.511'' lift).
It should be able to still pull hard past 5000rpm and its is a 5-speed at about 100 mph the tach is reading about 3400 rpm in 5th, I won't run out of gear with that car.

 

What did that have to do with rev or speed limiters?

 

he doesnt want the computer stopping the 2.8 at 6000 but i dunno why the tpi ecu makes a diff to him,

 

A 2.8 cranking to 130+ MPH? O_O

Does it just take forever after 90? My 305-powered, with little mods (filter, exhaust, etc) barely got to those speeds. Impressive V6 anyways.

 

could probably make good use of 8psi from a v1

 

It has to do with what wheel / tire package your car was ordered with. Z rated tires = NO limiter...
TPI 6000 rpms...no problem... (unbelievers.. )
90 IROC 140+mph = been there, done that..

 

True, but you don't have enough horsepower to push it any faster due to air resistance.

 

Just out of curiousity, what RPM were you taching with the 700R4?

 

I highly doubt that.