This my 05 2500HD 6.0 4l80E 10.5" Rear Diff

1st my speed limiter kicked in at 92mph/4600rpms in third. I believe I made highest #'s in second gear.

(all figures SAE corrected)

AFR 14.7-1
244.70 rwhp
323.90 rwtq

that's what she did with 825 miles on her

 

Gotta love that rear wheel torque number!
Congrats!
Philip S.

 

Very nice. Your speed limiter kick in at 92??? I thought they kicked in at 98.

 

i think my 04 kicks in at 98 but then slows my *** way down and lets go and i can accelerate back up to 98 where it does it again, so maybe its slowing him down to 92?.

PS I thought these were just supposed to go to the limiter and stay there.

 

It started pulling timing at 4600 rpms @ 92.2 mph and I was making 235rwhp/ on the up curve.
By 4800 rpms I was going 96.4 mph and making 198 rwhp.

 

Yeah, I'm pretty happy with the rwtq

Thanks for the congrats.

 

Excellent run grippy....especially that TQ number. As we know, TQ is where it's at.

 

how come the new speedos go to 120 but cut off is 92

 

Feds


I has more to do with what the tires on the vehicle are rated at.

 

Tires are only rated for around 98mph I believe. If you sold a vehicle that could go faster than its tires were rated for.... you'd have a nasty lawsuit. Not to mention it's probably illegal