2003QuickSilverZ06

Hi all,

I am new to this forum I currently trying to get my 03Z06 built. I was trying find recommdations for a build. I pretty much have everything except a shortblock and was wanting to go with the Lq9 platform. I was also, wanting to know what you guys would think the out come to the rear wheels would be with what I already have in parts.

Parts list:

1.B&B fusion exhaust
2. 2" ARH (American racing headers)
3. Fast 80lb LS2 Injectors
4. A&A V3 T-Trim Supercharging kit 8rib with a 8" crank pulley with 10% overdrive and a 3.47" supercharer pulley.
5. Lingenfelter oil cooler
6. Dewitt radiator and radiator fan
7. McLeod RXT clutch flywheel ARP bolts
8. C5R timing chain and timing chain damper
9. Fast 102MM Intake manifold
10. Nick Williams 102MM throttle body
11. Fast fuel rails
12. PRC CNC ported LS3 heads
13. ECS stage 1 fuel system with A1000 fuel pump.
14. Depending if I go 370 or 408 I'll go with A&A blower cam stage 2 or 3

Thank you guys for the help!

stevieturbo

If you need the lower rpm torque then go for the bigger motor.

That's really about the easiest answer you can get. If you dont, then dont. Slightly less torque can help with traction depending on what sort of surfaces you'll be racing on

2003QuickSilverZ06

Thanks for the reply. Mostly be driven on the street with the occasional days at the drag strip.

c5mtl

I'm no expert or anything but from what I've come to understand I would stay away from the 408 and go with the non stroked setup...boost will make up for the lost cubes

MVP'S ZO6

My 2 cents...


Build the LQ9 with a 4.005 bore and a stock stroke.

You shouldn't have trouble with a larger 4 inch stroke if you so choose. All else the same the bigger engine will make more torque at lower engine rpm.

Save your money and ditch the fast 102 wirh the 102 TB and put an LS7 or even LS3 intake and tb on there. Ditch the C5R timing chain and get with Bret aka blownbluez06@rktperformance.

Please Ditch the fast 80 lb injectors. I'm not saying you have to go with Injector dynamics (though I would for simplicity) but check again with the aforementioned vendor on injectors as well.

2 inch primary headers not necessary but if you have to have them then do it. But you may be able to save a few bucks here. 1 7/8 will do just fine.

2003QuickSilverZ06

Ya I talked to a few people about the fast intake manifold and boost not a good mix... Didn't know the LS7 intake manifold would fit. The underside is different then the cathedral and the squat ports. I was leaning toward the ls3 intake manifold and stock ls3 throttle body. I already have the C5R timing chain , so I'm keeping that.

I called fuel injector connection today about my injectors because there was a big mix up and there actually not fast injectors. They don't even tell that crap and told me how trash they were. I have the 80 lb Bosch EV14 injectors.

Ya I already got the headers with 2 inch primaries. I talked to ARH and they told me I won't see any difference then the 1 7/8 till I make over 700rwhp, so I will be in that ball park.

2003QuickSilverZ06

Oh and the motor is coming from TSP, so that being said they only offer it in a 4.030 with a 4inch crank to make the 408. I asked them the difference between the 2 also the 370 vs 408 as to reliability and it going be a supercharged motor. They said will be the same and shouldn't worry about the reliability that they both will be reliable. Just the 408 would make more torque overall.

c5mtl

the longer stroke wil cause more wear to the piston skirt ....you flat out don't need it

PEETYZ

IMO keep the stroke stock. It will last longer. It's much easier to make and add power forced induction so you don't always need the stroked applications.

What's your power goals?

Best of luck and welcome to the forum!

MVP'S ZO6

"Can" cause more wear. If the engine is built right it will be just fine.

2003QuickSilverZ06

What you guys think of MSD Air Force 103mm intake manifold and MSD 103mm throttle body for boost. Do they make an LS3 version? I can't find one out there...

ajrothm

Correct..

Getting the bores square and piston to bore clearance set CORRECTLY is the most important thing..

2003QuickSilverZ06

Sounds like to much room for error... Maybe I'll just go with the forged 370...

c5mtl

The power on one word
can.....I stand corrected

PEETYZ

I agree and I know lots of happy 408 owners however the shorter stroke is more stable regardless. The stroker will pull the piston lower in the bore on the stock block. If you use a taller block this is less of an issue.

Good Info on the stroker info at the 8:45 section. Whole video is pretty good actually.

MVP'S ZO6

Don't get it confused. :-) a "stock" stroke engine can be messed up just as fast.

Atrain59

I'll be doing a 370 short block with ls3 heads and intake this summer. Pair that up with my ECS 2200 supercharger I should be around 900wrhp

2003QuickSilverZ06

What intake manifold, tb, and fuel rails you going with? How much can stock ls3 fuel rails hold up to?

Atrain59

I'm going to be using LS3 heads, Intake and TB. I have FIC 850cc injectors and Holley Fuel rails that i will be using. I'm not sure on the stock LS3 fuel rails.

2003QuickSilverZ06

Ok ya I was looking at same set I have different injectors though and want run areomotive ls3 rails.