You will have no problem breaking 500. Your 4.8 is better suited to the 70 than my 5.3 is.

 

I know the OP had his car up for sale.. might've sold which would explain less frequent visits to the site.

 

Yea I ran away bc I don't have the most powerful 5.3....not. Toobad skinnies has had the number one spot most the time anyway.

I've been working 80+ hrs a week on 5am-9pm shift.

I will update the thread tonight after work.

 

Good stuff . This is a thread know body wants to see die out. I'm not ready to add mine but its good to know it will still being updated

 

Yea just been super busy. I literaly go home and sleep and go right back to work. lol.

 

What the hell, I'll throw mine up.

stock bottom 5.3
317 heads w/ ARP head studs
LS6 cam & valvesprings
Turbonetics T76 BB w/ .96 AR
11 PSI
T56 car

563 RWHP, 546 RWTQ

https://www.youtube.com/watch?v=Bf3et53cv7E

Just busted a ringland on a piston so another used one is going in and then I may be throwing some meth injection on it for peace of mind this time around.

 

alright folks, updating!

 

mine goes back to the dyno tomorrow. will post numbers if she lives through it.

 

if he comes in and says its ok to add him, i will, thanks

 

alright, i believe i got it all, let me know if i need to change anything

 

Forgot to update mine. It made 587rwhp at 12.8psi and ran a 10.50 at 133mph at 9psi.

 

denmah
2003 5.3l
654rwhp xt80 turbo
4l80e
9.95 @ 141mph

 

mines a 4.8 but if you wanna add it you can, its a junk yard stock bottom end making around 700 whp , precision 74mm 20 psi 9.14 at 150 mph .

 

Any pics?

 

sure do but here is a video instead.

 

turned up the boost yesterday and went 9.550 at 143mph. still having a issue with the converter being to tight.

 

If they would have unlocked this earlier I might have a similar set up. A lot of people thought he and maxmitchell were nuts and they have spent a lot of time trying and researching things

 

Those AFR's really flow, what do you think you would have made w/ out those heads?

 

What chassis is it in? That 240 or the Cuttlass G body?

 

Well funny you should ask I actually just pulled them off and put on a set of 799s. Our thought was that since they were for a ls1 that it was lowering the compression to much. Now with the new heads it seems to feel faster! We data logged it from 80-130mph and it used to do it in 4.7 now it does it in 4.4 seconds! The injectors are maxed out so I would like to put some 120s on it and re dyno it!