car is in sig, i cant figure out what rpm to shift at, what is the optimum shift point on a basically stock motor? i want to get the car dynoed so i know the peak but until then im lost as to where to shift.

 

I shift on my almost stock Z28 right before 6000 rpm's.

 

factory limiter is 6250 rpm. To get the best performance shift as close as possible to that limiter without hitting it. Factory tachs after '98 read kind of slow, so your 6000 rpm reading on the tach is probably more like 6150 rpm actual.

Tony

 

so then when i see 6k its good to shift? man i cant wait to get a shift light

 

Once my tach gets into the yellow 500rpm's right before the red I shift.

 

A long time ago someone very savvy with the Ls1's told me this method according to our slow *** Tach...pay attention..
1st-2nd-shift at 5,500rpm on STOCK tach
2-3-5,700rpm on stock tach
3-4-6,000rpm on stock tach....

This should get you just as close to rev limit without smacking it.
The BEST solution is to go get a small shiftlight(i prefer Harlan's) and set it to 5,800....shift when it comes on, and go!!! no more watching a tach, just concentrating on driving....

Hope this helps....remember these only apply in a all out race(drag strip) application when the tach is REALLY falling behind.

Tim

 

sweet thanks, yeah i am waiting for money to get the shift light cuz im buying long tubes right now