I NEED to know!

[el guapo]

Ok, heres my big qustion. I,ve got a 06 silverado 4x4 extended cab. Why am I on an Ls1 site? Good qustion, my truck comes with 5.3 (we can argue the c.i. later)aluminum block and heads. It,s the 5.3 h.o.. I've been told (writen) that the trucks did not come with aluminium blocks. It's an option for a truck with my packaging. I've been doing a lot of reserch but have come up with little info. I'm pretty sure It's a Ls1 of sorts. Thats why I'm here. I am looking for any information regarding my trucks engine. Again 5.3 h.o. aluminum block and heads 310hp factory rating
PLEEEZZZ HELP! I NEED to know .

[Nitrous]

Maybe this will help you out. Your engine is the L33 which comes standard in all 2006 4x4 trucks.

L33 applications:
Chevrolet Silverado 1500-2500/GMC Sierra 1500-2500

Type: 5.3L V-8
Displacement (cu. in. / cc): 325 / 5328
Bore & stroke (in. / mm): 3.78 x 3.62 / 96.01 x 92
Block material: Aluminum with iron cylinder sleeves
Cylinder head material: Cast aluminum
Valvetrain: OHV, 2 valves per cylinder
Ignition system: Coil near plug, composite distributor, iridium-tipped spark plugs, low-resistance spark plug wires
Fuel delivery: Sequential fuel injection
Compression ratio: 9.9:1
Horsepower (hp / kw @ rpm): 310 / 231 @ 5200
Torque (lb.-ft. / Nm @ rpm): 335 / 463 @ 4000
Recommended fuel: 87 octane
Maximum engine speed (rpm): manual: 5600 automatic: 6000
Emissions controls: 3-way catalytic converter, exhaust gas recirculation, positive crankcase ventilation, evaporative collection system

[el guapo]

thank you for the information. in regards to the L33, where does this engine fall in the line up of Chevy engines and how does rate. Im new to the Chevy crowd. How much room is there for improvement,has Chevy sqeezed most of the power they could get out.

[Nitrous]

The 5.3 is an LS1 based engine and there's plenty of room for improvement if you want more horsepower. The difference in the 5.3 from the 5.7 is smaller combustion chambers in the heads, smaller camshaft, smaller cylinder bores, larger crank pulley and a different style intake plenum. You can get alot more horse power of of the 5.3 if you want.

Check this out, I know both of these guys through forums and they're pretty happy with their times.

Vehicle: ’01 Chevy Silverado
Engine: 5.3 Mods: Nelson performance tuning, 223 225 564 571 114 cam (new cam/new time coming soon), asm long tube headers, BBK throttle body, K/N fipk intake, flex-a-lite elect. fans, asp under drive pulley, dual in dual out Imco muffler, century transmission, vigilante 2500 converter, tornado, Taylor thunder volt 50 spark plug wires, A/C delco iridium spark plugs, 4.10's with Eaton posi, B&M tranny cooler.
Programming and engine harness – Nelson Performance

track times
60'-1.75
330'-5.08
1/8'-7.91@86.40
1000'-10.40
1/4-12.52@105.90

Vehicle: ’03 Chevy Silverado
Engine: 5.3 Mods: Nelson mail order tune, ls1 fans w/ nelson harness, cai, tr220/112, 918's, manley pushrods, pacesetter lt's, custom 3" exaust w/ Y and aerochamber, built 60E, tci 3000 stall, eaton differential w/ 4.10's.

show: 2" hotchkis drop coils, 4" beltech shackles and hangers drop. 20" centerline stingray III's w/ falken 275/45/20's.


track times
60' - 1.74
330' - 5.08
1/8 - 7.93@85.49
1000' - 10.42
1/4 - 12.53@106.73

Like I said, there are plenty of options out there for you but you have to find the best combo that suits you and your needs. I would start with a cam and head combo with a custom tune. If that doesn't make you happy, install a 2500 to 3200 stall convertor.

[el guapo]

This is exactly the type of info I was looking for THANX.
By the way, your conversion-S I C K !

[Nitrous]

Thanks! LEt me know if you have any more questions.

[Blown25thT/A]

So what would a stock cam out of an LS1 do for performance wise in these trucks?

Sorry...not tring to hi-jack your thread. I've been wondering the same things.

[Nitrous]

No problem, To be honest not much. I wouldn't waste the time or money on it. You'll be better off buying a cam with more duration and lift.


5.3
190/191 int/exh @ 0.05" duration
0.466" / 0.457" int/exh lift
114 LSA

LS1
197/207 int/exh @ 0.05" duration
0.467" / 0.479" int/exh lift
116 LSA