hdkarmy

I'm having trouble finding a 6.0 cheap to build, but I can get 5.3 all day to build for cheap. I'm in the DFW area. How much power have you made with your 5.3? What did you do to get it (cam, forged, heads, turbo size)? How much boost? Are people building 5.3? Are people building 5.3 out to 5.7? Please post your power numbers and builds.

Chronicle

iTrader: (7)

I am interested as well. LM7's are way easier to find than LQ's, and cheaper.

4u 2 nv

iTrader: (29)

Mid 500rwhp isn't hard. Zo6 cam, springs, retainers, pushrods, are the only internal like mods. Throw some 317 heads on it and get down to around 8.5-8.6:1.

4u 2 nv

iTrader: (29)

You will find some people running a BW366 while others run GT42r or the like. Somewhere in the 10-15lbs will suffice

IT_SS

iTrader: (5)

most I've seen is 800hp, I'd be happy with 550 - 600rwhp

Compressor Surge

iTrader: (21)

I don't know how much power it made, but my 317 headed, LS6 cammed, 5.3 pushed my 4300 lb truck to 11.95@115 last year. If I would do it all over again, I would not swap to 317s. The drop in compression really hurt the response of the engine off of boost....which is pretty important, since I'm running a BW S400. That was at about 15 psi.

kmracer

iTrader: (1)

^ i agree. theres no need for the head swap.

norotor7

iTrader: (2)

damn, thats a fast truck.

Elec87

iTrader: (49)

535 at 14 so far, went 10.65 best to date. tu1 cam

Compressor Surge

iTrader: (21)

hdkarmy

is this done on a stock long block?

pwrtrip75

iTrader: (8)

stock shortblock, 317 heads, 224/224 .580/.580 112 cam, 15psi, + 50hp nitrous. 640whp through a TCI streetfighter converter. Lasted 3 years and then spun a rod bearing. Everything else inside looked good.
My nova went 10.31 @ 131mph w/ 1.56 60ft. Weighed 3660lbs. 3.50 gears, 29.5" tall tires.

Packy

iTrader: (11)

This is awesome to hear because I have a 30K mile, 2006 5.3 shortblock sitting in the garage ready to swap into mine when I need to freshen up the forged LS1.

ChevyChad

iTrader: (50)

I'm pretty sure you can bore a 5.3L block to a 5.7. Then you can use all the standard off the shelf 347 parts to forge it.

jjcamaro02

iTrader: (34)

I have a cast iron 5.3 block bored to 3.905. Forged internals 9.5 cc with 317 heads. Running 18 lbs. of boost with D1SC and made 780 RWHP. This is a new set up from last years times, also using meth.

XXX37

you can always mill the 317's a tad to get you to 9.0 or so, which would be good if youre going with a big single.

stock48

iTrader: (17)

Parish went mid 9's @140 in a Low 3000lb fairmont with a stock 5.3, ls6 scam, and master T70. I thought that was pretty good. Another guy on here is going high 8's in a mid 2000lb car with an alum L33.

jjcamaro02

iTrader: (34)

This is what I did with my heads.

TPIIROC

iTrader: (1)

What do guys think of Ls1 heads on a 5.3? CC wise they are the same but the ls1 heads have bigger valves. Also only cost me 50 bucks.

slow67

iTrader: (2)

Actually the chambers are a little bigger. Also from I've read, they don't flow any better despite having larger valves (at least 241s anyway).