Thinking of going phase 2 roush, question.

I'm phase one with a lund tune at the moment, I'm about to take it to phase two. I will be doing the timing gear and opg, so that's tensioners, chain guides, cg, secondary tensioners. I was thinking after these have been fitted what sort of rpm could I take it to, I was thinking round 8500 with 95 injectors. I've done no other work to the engine just the above.

Any reason why you want to spin it to 8500? Are you tracking or something? If not, your motor will live a much longer life below 8000.

Bybotie said:

Any reason why you want to spin it to 8500? Are you tracking or something? If not, your motor will live a much longer life below 8000.

Click to expand...

No not tracking. where would peak power be before it drops off on phase two, I take it it would be way before 8000.

The car isn't going to make power with the roush over 7500rpm. To spin the coyote that high you're probably looking at a whole different rotating assembly. Usually it's the high-strung NA guys that spin the motor past 8000.

Barrel said:

The car isn't going to make power with the roush over 7500rpm. To spin the coyote that high you're probably looking at a whole different rotating assembly. Usually it's the high-strung NA guys that spin the motor past 8000.

Click to expand...

That's where I'm at now 7500 so there's no advantage in taking to 8000 with a lund tune. Suppose there is only so much you can squeeze out of a near enough stock motor.

best thing would be to put it on the dyno and see where it's making power to and usually shift about 3-400 after that