Just had my truck on a dyno and it did 350HP/813lbs TQ.

Given that and the specs in my Sig, what time should I expect out of it in the 1/4 ?

What mods should I do next to drop my 1/4 times and also increase POWER ?

 

5 speeds are tough to race! Just ask me! When I was at 450 hp the best I could get was a 15.3 It's frustarating (with my truck anyway) because redline in 4th gear comes about 200ft before the finish line, so you either just push in the clutch and watch the competition go buy or try to find 5th, but by that time you've proabably crossed the line. I think you might be able to get a high 15 out of it and as far as the mods, delivery valves, injectors, turbos, or just put a auto in it

 

Is it because they take so long to finally get going ?

I know mine is a dog out of the hole, but LOOK OUT when it get's about (40) MPH!

 

Ya, you can't build boost out of the hole, the shifts take a while and you lose boost between every shift

 

Roger that.

My truck can't do a burn out. Well, probably could...but I won't spool it up and dump the clutch just to try it either.

So automatics are that much better out of the hole ??

My buddy had a 95 w/auto, 4.10s and he'd smoke the tires easily.

 

How well would LINE LOCKS (on the front brakes) help out ??

 

Since you have a 4x4 you don't need slicks so you don't need a line-loc.

 

So run the 1/4 in 4x4 mode ????

 

I ran a 15.00 with my old 98 12v with almost the exact setup as yours, luanching in 4hi dumping the clutch at 2800 rpm in 2nd gear.