shift points and rev limit
 

whats the best shift point on a stock 5.0 w/ t-5? it seems to do well for me around 5100.......

also, is there a stock rev limiter? meaning, if i let my friend take it for a ride, can he over rev it? what can the stock engine handle as far as high revs w/o damage?

Re: shift points and rev limit
 

Stock rev limiter is set at 6250. The computer begins shutting the fuel pump on/off to drop fuel; not like MSD boxes that actually drop the spark. The rev limiter won't help at all for preventing mechanical over-rev; meaning that if he shifts from 4th to 1st at 90mph the engine's gonna spin to whatever RPM is necessary to match the mechanical gearing. Been there, done that, bent every valve and pushrod in the motor. The computer's rev limiter will help cut the engine off if he misses a shift and over-revs it between gears.

In terms of the best shift point, with your mods you'll just have to determine the best shift point through trial and error. I'm guessing that it'll be somewhere between 5400 and 5800. I've got a discussion on how to mathematically determine the optimum shift points based on dyno data on my website at http://crt-performance.com/shift_points.htm.

Re: shift points and rev limit
 

damn jeff, your too professional!!! thanks for the help. i was just curious as what would happen if the my buddy upshifted at like 6200, since i never get it up that high. i think u answered the ques, which is that the engine should cut above 6250 anyway, so i should not worry?

Re: shift points and rev limit
 

nah, not unless you are boosted. It is not good for the engine, but it will be OK to tap it now and then. :)

I was shifting at 5200 with about your mods. When I got heads and a intake, with stock cam still, I was shifting at 5600.