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HP from compression ?

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Old

Mar 6, 2004 | 08:29 PM

#1

Thread Starter

Member

Joined: Nov 2002

Posts: 382

Likes: 0

From: Boise, ID

Car: 90 Camaro RS

Engine: 6.3L 383 V8

Transmission: 700R4

HP from compression ?

I think this goes here if not the mods can delete or whatever. Just wondering how much hp is gained from raised compression. Say if I have two identical engines one with 8.7:1 and the other with 9.1:1 what would the gain be?

Old

Mar 6, 2004 | 11:35 PM

#2

TGO Supporter

Joined: Oct 2002

Posts: 9,067

Likes: 1

From: Saskatoon, SK, Canada

Car: '83 Z28, '07 Charger SRT8

Engine: 454ci, 6.1 Hemi

Transmission: TH350, A5

Axle/Gears: 2.73 posi, 3.06 posi

Convention says about 10hp for 1 point of CR.

Old

Mar 7, 2004 | 12:18 AM

#3

Thread Starter

Member

Joined: Nov 2002

Posts: 382

Likes: 0

From: Boise, ID

Car: 90 Camaro RS

Engine: 6.3L 383 V8

Transmission: 700R4

Thanks for clearing it up. I was under the impression that you got monster power from raised compression.

Old

Mar 7, 2004 | 02:28 AM

#4

Supreme Member

Joined: Sep 2001

Posts: 6,111

Likes: 53

From: Ontario, Canada

Car: 1988 Firebird S/E

Engine: 406Ci Vortec SBC

Transmission: TH-350/3500stall

Axle/Gears: 7.5" Auburn 4.10 Posi-Traction

You would see a 2% increase in torque output.

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