So check my build which has a target of 500+ whilst remaining NA, but it is a full-race build based on JWT parts, non-VVEL heads which are mega CNC ported, 14:1 pistons with Bryant 4.0 steel crank
The new engine will go into the car after Xmas as we are only just now about to start the OEM engine with a Motec M150 tomorrow (7 Dec).
When we have the M150 running the EM engine, we'll install the new beastie and see where we get to.
The heads have sufficient flow to make just over 500 at the crank but it remains to be seen whether we can actually get that
Investment to date is 5 figures starting with a 2 ........ it is NOT cheap.
Be very careful what you wish for.
Best you speak with Clark Steppler or Ben Pila at JWT
BGTV8 VQ40HRGA Race engine build