Hello I'm building a gen iv 5.7l from a 5.3l. I been shopping around for cams. Right now I've settled on this one. Here are the specs any input would be great.
Cam Style:Hydraulic roller tappet

Basic Operating RPM Range:1,500-6,800

Intake Duration at 050 inch Lift:226

Exhaust Duration at 050 inch Lift:226

Duration at 050 inch Lift:226 int./226 exh.

Advertised Intake Duration:275

Advertised Exhaust Duration:275

Advertised Duration:275 int./275 exh.

Intake Valve Lift with Factory Rocker Arm Ratio:0.598 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio:0.598 in.

Valve Lift with Factory Rocker Arm Ratio:0.598 int./0.598 exh.

Lobe Separation (degrees):111

Camshaft Gear Attachment:3-bolt

Computer-Controlled Compatible:Yes

Valve Springs Required:Yes

Camshaft Manufacturers Description:5.7-6.0L engines with Cathedral port cylinder heads, greatly improved power band over stock, computer tuning required, slight choppy idle, best for stock motors with bolt on parts and tight torque converter.

It's going in an 07 Yukon 4x4 (not the xl). It's not really a DD because the company I work for provides me a truck that I drive home. It's used only for running around town and the occasional road trip. It might do some light towing every now and then. I have two other trucks to tow with nothing heavy. The truck has 3:73s and 4l60e which will be getting a corvette servo to start with until it Taks then a full work up. It still has to be streetable. My goals for the build is around 500hp.

Just curious how you think that cam would do if I put it in a stock 5.3l with just headers. 9.9 CR. how much hp am I going to lose by not going with the bigger bore?

IMO the lobe separation is a little tight. It’s gonna rock pretty good. That may not be a big deal for some folks but for a street driver it would get old. Just my .02

Thank you for the input. I'm think I'm going still go with this one if I don't like it it won't be that hard to go to a smaller one since it'll already have all new lifters and springs etc.