Since then I've been searching for more power. I contacted a few engine builders/shops and the best deal I came across was a built 408. Specs are:
New GM LQ9 Iron Block
Callies Dragon Slayer Crank 4.000 stroke
Callies H beam rods with ARP 2000 bolts 6.125 length
Wiseco 2618 Forged Pistons
Wiseco Stainless Steel rings gapped for boost
ARP Main and Head Studs
Cloyes Hex Adjust roller with HD Z-Chain
Comp blower cam
Comp lifters short travel race
Melling HV pump
LS3 Ported heads flow 340cfm @ .600
3 angle valve job
Manley stainless 2.16 intake valves
Manley Stainless 1.59 exhaust valves
double valve springs for 650 lift
Smith Brother 5/16 .083 wall pushrods
factory rockers with Comp trunion upgrade
9.5 to 1 compression
engine will come to me fully dyno'd and broken in so its a tune and go.
Still working on the drivetrain but the ZL1 bolt in rear kit is looking good for the money. Clutch will be a street slayer or Mantic 9000.
Fuel will be ID1000s and the LPE dual fuel pump set up. Meth will be added from AlkyControl with two M10 nozzles.
Shooting for 800 rwhp but the engine was spec'd for 1000 rwhp. The little V3 will be replaced with a YSI.
I'm also going to ditch the JBA 3in and OBX LTs for the Texas Speed 2in primary headers and their full 3in exhaust.