kjmdrumz3

iTrader: (1)

Did some searching and came up with nothing. With a TR 224 cam, 918 springs and chromoly rods, what rpm can the car be safely shifted at? I was told to set the limiter at 6700, the shiftlight at 6400 so i can shift around 6500rpm.....what do you guys think? Thanks in advance.

slow trap

iTrader: (22)

my friend has the tr 224 cam and peak power hits @6200 so around 6500 should be about right. my 228/228 don't peak until 6400-6500 but i still shift mine there because i'm scared of the carnage that might occur if i go much higher.

PREDATOR-Z

To find out what is the uptimum shifting point of any given cam You'd have to do a dynorun. From the graph you'll be able to determine your basics.
From then on, it is trial and error. Doing multiple runs at different shifting points untill you're satisfied with your results.
Basically you want to keep the highest amount of power between shifts.

kjmdrumz3

iTrader: (1)

I understand I should dyno the car to see where the peak power is......my question is with the cam, springs and rods is it SAFE to shift at 6400-6500? Thanks

PREDATOR-Z

Hell yes. You could go to 6800 all day long, bottom end permitting and assuming your valve geometry is on the ball.

1fastWS6

iTrader: (3)

Yes, you're fine shifting at 6400-6500. When I had the TR224, it peaked at 6000 and I shifted it at 6400.

kjmdrumz3

iTrader: (1)

Thank you fellas

Ryan02SS

iTrader: (3)

You'll be fine shifting at 6500rpms. The 01+ LS1's got stronger rod bolts from the factory so they can go alittle higher than previous years. When I was running my stock heads my TR224 112 peaked at just a tad over 6000rpms and stayed flat to 6400rpms where I shifted for max power. After adding my heads I noticed on the new graph the cam peaked at 6100 and holds flat to 6500rpms. HTH

CaptUSA

iTrader: (5)

How bad is this for the engine? I know red lines were set intentionally low to help out in reliabilty issues. Is 6500 brutal hard on a stock LS1? I ask, because I've not consiterd upping my redline until this thread.

PREDATOR-Z

Well it all depends on the miles, but an LS1 should handle 6500 very safely and occasional pushes till 6800. Above that it's only a matter of time. The weak link are the rod bolts. 01/02's fair a little better in that department.