shift points

Our cars make peak power at redline so shift there or above it if you have a tuner. Your ET look's good but you MPH seems low, is that due to short shifting?

 

Shouldn't the mph be 115-116?

Try shifting at 6200, it should bring up mph

 

+1, an if its tune shift at 6300 to 6500

 

6200 If unported and only with a upper pulley or stock

6500 if upper and lower or ported

Upgraded blower then it's on like donkey kong lol

 

i was trapping about the same mph when i was stock. I was shifting into fourth though. I started leaving it in 3rd and i started trapping 112 to 115. Keep it in third all the way through the traps even if it is hitting the limiter.

 

Most likely you have to short shift 1st-2nd if your car is stock or you'll just spin. Try 5500 at the first shift and change up or down by 100 rpm or so until your hooking going into second. Redline after that. It also will depend on the track conditions, weather etc.

 

Buy a set of gears that lets you maximize your rpm/power. Plain and simple.

I hit the line at 6300-6400 in 4th with 4.10s and 28" tires. 129-132 mph. Factory Eaton.


bj

 

6000-6200ish very liitle lift

 

Trust me, you weren't the first or the last. :beer:

That "thumbs up" smiley has caught a number of people.

Seriously though.... do what you need to in terms of gears and tire size that allows you to hit the peak power. If you've dyno'd it you can see. If not, include that in your list of mods and do some driving and logging of data.


bj

 

if you have a dyno print out by RPM (not a graph), this is a good site for shift point calculations:

Interactive Best Shift Points Program