How to test 5.7 hemi?

snapetwo said

Thanks. I was unaware of that. I think I'm just gonna tear it down and build it.
I am even considering going the carb route versus fuel injection. I want the FI but the computer and wiring are becoming to expensive and difficult.
Just trying to find out what kinda performance loss the carb has over FI setup

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I haven't seen EFI vs Carb on a new hemi, but the tests done on the ls1's indicate that the carb makes more top end power than the EFI. Granted, that was a FAST 102 vs a good carb intake.

In the hemi world, dyno's have been run indicating certain carb intakes (XV) give up a lot (30-40 fwhp) down low under ~4000 RPM. That particular intake didn't catch up until maybe 6000. I'm sure there are other options that fare better.

If you want a wild cam (significant overlap), you'll arguably be better off with a Carb.