NeedSW

What HP gains would I see from a whipple install and would I need to change anything else besides a tune? 2001 bone stock Z.

zone-7

Cleetus McFarland, using heads from Texas Speed and LSA adapters, and his very own custom "Bald Eagle" cam grind (also available from Texas Speed)on a stock LS 1 mind you, bolted on a LSA blower (not sure if it's a twin screw or traditional roots) and made 705 RWHP after some tuning.

You should check out YouTube using Cleetus McFarland and Leroy the savage as search terms. It's an interesting build.

When folks ask "how much power will this combination make ?". You'll never know for sure until you put your car on the rollers. There are too many variables such as altitude, regional climate conditions, auto or manual transmission etc..