| a Allison will last for a while running 13's but like Idahorob said it is doing internal dammage but doing a shift kit will help getting more line pressure and then you reduce your chance of internal damage.
do a PPE on level 4 and that should get you some really low low 14's and maybe a few 13 sec passes,i ran that tune on my LBZ for 50K miles and never to my knowledge did the tranny limp and to me it didn't feel like it damaged anyhting internal but thats going off what it feels like not what it looks like inside.
__________________ James
I HAVE THE MEDAL  
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. |