sand man

tuned on 95 octane,pritty good id say for 290$ tune

yurs78

First off great numbers, those are the best I've seen for a stock 5.3 and almost no mods, especially the torque; that's just crazy to me. I've seen other 5.3's with small cams and headers in them that made the same torque. I think that torque is close to what some stock 6.0's make.

Is this the aluminum 5.3, does it have vvt?

What are the gears out back; 3.42?

Do you have the 6 speed tranny?

The only thing that is confusing is that the torque is so great and carries all the way up to 4800 rpm, it makes no sense that you didin't make close to 320 - 330 hp. It just doesn't add up.

Either way, that thing must feel like a beast now, I'd love to drive that baby! Now lets see some vids of carnage and destruction!

Ad1

when he say 95 octane its equal to US 91 octane

we use the same octane rating as European

bai78

Thanks for the clarification, I was wondering what kind of fuel was over there. It almost seemed as though you could get 110 race fuel as "premium" & the low octane stuff was 91.

sand man

the TQ is muchmore than i expected,i was thinkink it wold be 300-305 befor the tune

its an M coded engine i think its an iron engine

yeah 3.42s

no,4l60e

so we use the same rating as americans

in kwait they have 98

here in saudi we have 91 and 95.. all premum

yurs78

Does this engine have the Active Fuel Management? Is it this or the trucks with the VVT that have the goofy cams that don't like performance? (ie. not good with FI)

norris_83

iTrader: (4)

I would guess these DOD engines hate any internal mods done to them.. The lifters are wack and so is the valley cover

sand man

yes it does,nah the vvts are crazy with tunes as far as i know

+1...if i went with a cam i think ill go a full cam kit (cam,lifters,rockers,pushrods...etc)

what do you guys think is the best for the 5.3,of course ill work on the heads and bolt ons

zervanj1

just had mine dyno jet at 285hp 318tq, tuned, k&n cai, flowmaster

sand man

what year what model?