What's my HP?
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 8
Likes: 0
From: Idaho
Car: 1988 Iroc-Z
Engine: Supercharged ZZ4 350
Transmission: T5
Axle/Gears: BW 9-bolt 3.45
What's my HP?
New to the forum. Recently acquired my 88 Iroc after my Step-Dad sadly passed away last fall. The car belonged to him, I bought it from my mother a few weeks ago. He told me years back it had 400hp, then added a supercharger and told my brother-in-law 550hp. Based on what's been done, do you think he was referring to hp at the crank or wheels? Also, any idea what this might do for a 1/4 mile?
88 Iroc
ZZ4 crate motor 5.7L 350
Edelbrock Tubular Headers
Crane Cam Rocker Arm Set
Edelbrock Catback exhaust
Procharger P600B Supercharger (9psi)
manual tranny
I don't know much else about what's been done to the car, I will try to upload a pic.
BTW, lovin the car!
88 Iroc
ZZ4 crate motor 5.7L 350
Edelbrock Tubular Headers
Crane Cam Rocker Arm Set
Edelbrock Catback exhaust
Procharger P600B Supercharger (9psi)
manual tranny
I don't know much else about what's been done to the car, I will try to upload a pic.
BTW, lovin the car!
Senior Member
iTrader: (1)
Joined: Jul 2008
Posts: 751
Likes: 2
From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: What's my HP?
He should be talking about flywheel hp, and I'd guess more like 350fwhp n/a, 500fwhp on boost from what you were told it has. I'd put it at a mid 11 second 1/4-mile.