Snake Eater

You could run high 12's for awhile with the stock tranny, but if your getting greedy and want low 12's-high 11's you will need a built tranny. As for cams the 224/224 112 will work good in a 5.3L. Yes long tubes are better, shorties are good, stock manifolds arent that bad. As far as safely running a 200 shot, thats up to you. I've run a 225 dry shot for a year and a half and had no problems exept for the occational spark plug swap every 2000-3000 miles. I have the fuel to support it though and the tuning. Thats the most important thing. As long as you have proper tuning and the right fuel dellivery there's no reason a 5.3L engine shouldnt last a long time with a 300 shot. These engines are extremely strong, and have some of the best stock internaly ever put in a truck.

Scream

iTrader: (6)

You have lost your mind man. A 300 shot on a stock internal 5.3?

stretch104

about how often to you guys with 150-200+ shot spray.

Snake Eater

If you can run 18psi boost into a totaly stock 4.8 and pull 540rwhp i think a 300 shot with a good tune and good fuel is safe. And a cam and rod bolt 6.0 pull 640rwhp.

Snake Eater

I used to go through 2 bottles a week when i lived in FL. But now up here the N2O fill stations are too hard to find and too expencive.

stretch104

so you sprayd mutiple times daily. how much is nitrous per lb.

Scream

iTrader: (6)

What kind of tuning did you have when you lived in FL? I thought you just got HPT? What kind of fuel system upgrades do you have?

Recommending that someone spray a 300-shot on a stock 5.3 is just crazy.

12sec.5.3

iTrader: (1)

I try to stay away from nitrous. A 6.0, Yank 3000, long tubes, pulley, e-fans, 3.90's, cam, heads, and a good tune would probably put solid mid 12's. That's gonna be my route.

Snake Eater

Down in FL i paid $2.25 per pound at Automotive Engineering, $3.00 per pound at Speed Craft, $2.50 per pound at Hocus Pocus, and i think it was a little more than $3.00 per pound at Mustang Motorsports.

Up here they sell it at the track for like $5.00 a lb. and in Portland i think I can get it for $4.75 a lb. Either way the track i over 2 hours away and portland is half an hour away. To far and too much to want.

In FL all those places were within a couple miles of my house.

Snake Eater

I'm not recomending he do it. I'm saying i believe a stock 5.3 would hold it.

Fuel system i had then was 32# injectors and vortech inline, and tuning was done roughly at a friends shop in TX with edit. Thats why i was running so rich and only 15* timing at WOT. Hence the plug changes every 2000-3000 miles.