360?Cam is a custom grind from racer brown 254/254 575/575 on a 106. Really fast lobe. Trick flow 190 heads. 10.5 comp .038 squish.
Bingo!But that's the best damned street tunnel ram ever made......That's why Edelbrock called "Street Tunnel Ram". They were badass.....and still are when you can find them.
Over 7000ish RPM with a 340 it’s going to struggle. On a 400 plus inch engine it will have issues above 6500 RPM.
Use the top rumble posted and turn the carbs sideways.
That’s a very good street intake.
That and cross section is the RPM limiter.
The cross section is pretty small on those intakes, so anything you can do to correct increase the cross section area, and get the correct taper, the higher the RPM will be.
This is the meet and potato’s I would be concerned with right now. I’m not sure if the OP’s CID, but the runners are small. This makes throttle response better. (Hence the name, “STR for Street Tunnel Ram.”)
However up top the rpm range, it’s the limiting factor. As mentioned, the cross sectional area total. The bigger the engine the harder time the intake has feeding it. Regardless, it should still perform really well.