Stock Bottom 4.8L w/88mm (Not a Typo)
09-25-2013, 07:55 AM
#41
This is very encouraging!
I'll be taking my 4.8 truck to the track Friday. It has stock heads, LS6 cam, good springs, LS9 gaskets, head studs, E85 and a BW S372. I'm @ 15psi right now, no idea how much power or how fast it is. It's so hard to gauge how quick it is because it's in a truck haha. 4850lbs empty. I'm going to run it on 15psi and then go up from there. I'd like a 10s pass in it.
I'll be taking my 4.8 truck to the track Friday. It has stock heads, LS6 cam, good springs, LS9 gaskets, head studs, E85 and a BW S372. I'm @ 15psi right now, no idea how much power or how fast it is. It's so hard to gauge how quick it is because it's in a truck haha. 4850lbs empty. I'm going to run it on 15psi and then go up from there. I'd like a 10s pass in it.
09-26-2013, 11:50 AM
#42
On The Tree
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all you gotta do is throw a hitch on that thing and tow a boat to beat foose04! haha
congrats on the numbers! what kind of compression should this motor be? im gonna be real close to 11:1 (maybe 10.8 or so?) and im kinda scared to be throwing a lot of boost to my 6.0. lucking going to be running e85
congrats on the numbers! what kind of compression should this motor be? im gonna be real close to 11:1 (maybe 10.8 or so?) and im kinda scared to be throwing a lot of boost to my 6.0. lucking going to be running e85
09-28-2013, 10:44 AM
#43
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Very nice! Ha, you might not even go back to the 408......
If you're running the 1.23 housing, get a 1.08 and crank it up some more on that 4.8......oh and I'm sure you're running 2.5" mid pipes/crossovers which doesn't help the spooling
If you're running the 1.23 housing, get a 1.08 and crank it up some more on that 4.8......oh and I'm sure you're running 2.5" mid pipes/crossovers which doesn't help the spooling
09-29-2013, 08:59 PM
#46
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Saturday got rained out but I got to race today.
While checking the car over during tech I looked underneath and noticed this...
Over time and vibration the fuel solenoid nut worked its way off, the coil rubbed on the ground a little and the spring was gone. So I cut it off and tried adjust the tune enough to compensate for the dry N2O shot. I was going to run 150shot but reduced to 100shot to try it and log it first. So no spraying down the whole track (like my 1060whp dyno).
Pass #1
10.004@146.25
100 shot until 11lbs, 24.7 lbs at 71mph and up
Pass #2
9.92@145
150shot until 11lbs, 24.8lbs at about the same speed
Pass #2 In car vid
http://www.youtube.com/watch?v=eloBy...ature=youtu.be
I wasn't getting the 60' I hoped for but I met my goal of a 9 second pass so I am very happy.
While checking the car over during tech I looked underneath and noticed this...
Over time and vibration the fuel solenoid nut worked its way off, the coil rubbed on the ground a little and the spring was gone. So I cut it off and tried adjust the tune enough to compensate for the dry N2O shot. I was going to run 150shot but reduced to 100shot to try it and log it first. So no spraying down the whole track (like my 1060whp dyno).
Pass #1
10.004@146.25
100 shot until 11lbs, 24.7 lbs at 71mph and up
Pass #2
9.92@145
150shot until 11lbs, 24.8lbs at about the same speed
Pass #2 In car vid
http://www.youtube.com/watch?v=eloBy...ature=youtu.be
I wasn't getting the 60' I hoped for but I met my goal of a 9 second pass so I am very happy.
10-11-2013, 10:28 AM
#54
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Well i found the limit of the 4.8! 
I was out making some vbox pulls yesterday.
Pull #1
5.9seconds 26.xlbs & 100shot towards the end of the run. So so first part of run.
Pull #2 ~27lbs & 100shot
Passenger Side of block by starter
Bolt from motor somehow lodged in caliper and scuffed up my boart wheel.
Bogart Wheel
I was out making some vbox pulls yesterday.
Pull #1
5.9seconds 26.xlbs & 100shot towards the end of the run. So so first part of run.
Pull #2 ~27lbs & 100shot
Passenger Side of block by starter
Bolt from motor somehow lodged in caliper and scuffed up my boart wheel.
Bogart Wheel
10-11-2013, 02:06 PM
#58
Way to go dude!!! What let loose? A rod bolt I imagine. My 4.8 only lasted about a month on 13 psi and 93 only. I'm thinking bad tank of gas and washed bores. In my neck 4.8s run $500-$600.
