It will make less.
How much less? I don’t have that answer for you.
If your budget doesn’t include TF heads, then just use what you can afford.
But to think the power between ootb E streets and ootb TF’s will be the “same”, is just kidding yourself.
You said you wanted 550hp.
The TF heads and that Lunati cam would do it.
Would ootb E streets do it?
Might be close....... but if I told a customer I was building them a 550hp motor, and I put it on the dyno and it made 525-530....... that would be a “fail”.
It’s still a nice motor, and driving the car you may not ever know the difference........ nonetheless the target goal was not reached.
Whereas if it had the TF heads and missed the HP mark by 10hp...... making 560hp....... everyone is all smiles then.
