u/Popular_Ingenuity265

First LS build

I have a 2011 Camaro 2SS with a TR6060 manual that I am swapping the cracked LS3 for a ATK 408ci Stroker LS (gen 4 6.0 originally) and I will be using the LS3 heads, oil pan & Intake manifold. i’m not sure what adjustments i’ll need to make for fitment of the alternator or if i need brackets so if anyone has done this swap before and knows that would be greatly appreciated.

these are the specs and parts I’ve picked so far, let me know if there’s any recommended changes I can make.

Short block : ATK 408ci Stroker LS -4cc flat top pistons

Cam: GPI custom grind

Heads: Stock LS3 heads with .040 head gasket

Rockers: BTR with BTR v2 Trunnions

Lifters: Chevrolet performance

pushrods: waiting on cam & engine to arrive to measure

Springs: TSP .660 Dual springs

Fuel: ZL1 fuel pump, 80lb trickflow injectors, flex fuel kit

Tune: GPI remote tune with HP tuner

Exhaust: 2.5in, no mufflers, x-pipe, catless, kooks 1 7/8ths

According to what i’ve seen, it should be around 11.5:1 compression. the goal is around 550whp NA on 93 and 580ish on E85. Is there anything else I might need to consider?

block specs:

Seasoned 6.0L Iron Gen IV with ARP main studs

Bore/Stroke: 4.030” x 4.000”

Crankshaft: Manley 4340 forged 58 tooth reluctor wheel

Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts

Pistons: Manley 2618 forged -4cc flat top moly skirt coated

Rings: Total Seal CS AP with steel top rings gapped for boost/nitrous

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injectors recommendations for a 408 stroker with ls3 heads?

i’m looking at 80lb trickflow ls3 injectors for 632$ https://www.summitracing.com/parts/tfs-8914080o8 are these good? is there any better priced ones that are good?

this is the motor setup:
-forged shortblock ATK 408ci stroker LS with -4cc flat top pistons

-stock ls3 heads

-.660” TSP dual valve springs

-GPI custom grind camshaft

-BTR rockers with BTR v2 trunnions

-ZL1 Fuel pump & flex fuel kit

-GPI remote tuning with HP tuner

-Chevy performance lifters

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