ZR-1 Net Registry Forums - View Single Post - First start of w new short vlock and intake cam.

XfireZ51 · 12-21-2019

The motor has been upgraded incrementally. So I started w a ported top end + exhaust. That produced 397rwhp.
Then Pete and I put on ported heads, and intake cams. That reached 430rwhp.
Very nice motor for street. Good idle quality w good performance.
I didn’t necessarily want to go w exhaust cams at first. But Pete persuaded me to go ahead.
So finally, we added exhaust cams which brought power levels to 454rwhp.
Tuning helps tame idle. Power is intoxicating. Would not go back.

These numbers are all SAE. Uncorrected, the motor w exhaust cams produced
464rwhp/411rwtq.

12-21-2019	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: First start of w new short vlock and intake cam. The motor has been upgraded incrementally. So I started w a ported top end + exhaust. That produced 397rwhp. Then Pete and I put on ported heads, and intake cams. That reached 430rwhp. Very nice motor for street. Good idle quality w good performance. I didn’t necessarily want to go w exhaust cams at first. But Pete persuaded me to go ahead. So finally, we added exhaust cams which brought power levels to 454rwhp. Tuning helps tame idle. Power is intoxicating. Would not go back. These numbers are all SAE. Uncorrected, the motor w exhaust cams produced 464rwhp/411rwtq.