my NBS 4.8 all stock except for dual valvesprings and 214/218 562 on 111 lsa . trick stg 2 kit, MP70, 3" down pipe into 4" exhaust, 3" standard intercooler, 15 psi, 10.4 af4 and 10 degrees went 11.02 at 121 1.56 60ft with 3.90s and 28" slicks. Truck weighed 4320 with me in it. Im sure yours weighs more, but only comparison I can give you. this was good air, now with a 66mm turbo and 15-16 psi in +3000ft over previous with 70mm its been 7.02 at 98.4 8th, 1.55 60ft, 14 degrees, 10.8 afr with 50/50 meth. the pretty good DA difference tells me it has 10s now. Havent dynoed it

 

Also, some meth or cooler weather and a 2 step will go along way. 2 step at 3200, maybe build 7-9lbs and let it rip. mines set at 3500, leave on about 8-9 psi and cut 1.54-1.56 with caltracs

 

My old 4.8 that i first put in my 454ss truck had a zo6 cam, pac1218 springs, 80lb injectors, 76mm, 93 pump gas with single nozzle methanol and at 16lbs an 16* timing in it with 11.4afr pulled 626rwhp/599rwtq so it seems to me that the numbers you provided are in reason i would think with 10ish afr and only 12* and no meth.

 

Here is what I got from the log of a run of 12.670 sec@108.45 MPH
<ul>
Launched at 3342 RPM
1st gear from the dig to shift point takes 4.176 sec
&nbsp;&nbsp;1->2 61 MPH@6308 RPM
2nd gear till next shift takes 5.627 sec
&nbsp;&nbsp;2->3 102 MPH @ 6260 RPM
3rd gear till traps 2.867 sec
</ul>
*note: the figures above reflect the MAX RPM where the shift started. 1->2 took about .7 sec and 2->3 took about .5 sec to get back down to min RPM in the next gear. The converter was not locked so I was still gaining speed during this time.

 

@fastjweb - thanks for sharing, that helps! P.S. I do run assassin bars to keep her from hopping and going sideways. I will also have to research the 2 step to see if it can help. Meth is going in this weekend. I am also doing a Livernois Stage 1 kit on an SHO so hopefully I can finish both.

@BigBlock90, and all others for that matter. Thanks for sharing your experiences and suggestions. Very helpful and gives me lots of food for thought.

I think ZO6Ted said it best when he said "...the fun is in the journey..."

 

Seems a little low to me? I made 600/660 13psi on stright 91

 

@darnie - according to your signature it looks like you run a bit more cam than me and some head work.

I am currently changing my Intercooler to a CXRacing 4" and re-doing my cold pipes to 3" in and 4" out of the intercooler and going to a card style MAF. I had some turbulence issues that were annoying to tune around with the stock MAF setup.

I also put a single nozzle meth on it and upped the timing a few degrees and already can feel a difference. Once I get my cold side all plumbed up, I'll have to head back to the dyno and post results.

 

Im very interested in seeing how it changes with the IC and meth.

 

X2 be intreating to see the difference

 

Which dyno, Mustang?