Well guys here are my mods

2008 4.8 rated at 295hp
112 radix@6psi
edelbrock shorty headers
cats deleted
3 inch dynatech muffler
ported tb
k-n cold air box
ls6 zo6 cam w/springs
vette servo
factory 3.23's one tire fire
np tune(mail tune)

now mods on the way....

90mm j-tube
4.10 tru-trac

thats my goal guys to run low 12's with this little 4.8 /later it will get pulled for a 6.0 and then it should have no problem .

 

Sooooo what does it run now?

 

Well i ran it magnacharger at 5psi,exhaust only,cats deleted
hit a 15.3@103 spinning one tire bad on 3.23s

 

what about some long tubes?

 

I'm sorry but thats horrible. Stock you should be right around that...

The true track and gearing is going to make a big difference. Get some slicks and heat them up. The speed was good for a high 12 sec run. You don't need to mod a bunch, you need to get the power down to the ground!

 

No wind resistance on a dyno

 

I was thinking longtubes as well.i hope the4.10's help,i know that tru trac willANYTHING ELSE?

 

something is not right.

 

that right there should get you pretty close and if not the 150hp shot of N2O should. You could always just add a nice blown 408 and juice

 

if the true trac doesnt do it, i would get a nice stall. the 4.8's just dont make torquw down low.. a good 2600+ stall and true trac with DR's will def do what you want.

probably mid-low 12's actually