V6 vs. V8 Engine Comparison

Comparison: General Motors Sixty-Degree V6 vs. Rover V8

GM / Chevrolet 3.4L V6 Multi Port FI as installed in Camaros and Firebirds
Power Output: 160 bhp @ 5000 rpm
Torque: 187 lb ft @ 2600 rpm
(information taken from “How to Modify and Tune Your Camaro – 1982-1998” by Jason Scott)

GM / Chevrolet 2.8L V6 as installed in Camaro and Firebird (1985-1987)
Power Output: 135 bhp @ 5100 rpm
Torque: 165 lb ft @ 2600 rpm
(information taken from “How to Modify and Tune Your Camaro – 1982-1998” by Jason Scott)

GM / Chevrolet 3.4L V6 “crate engine” with variable jet computer control carb
Power Output: 160 bhp @ 5000 rpm
Torque: 194 lb ft @ 2700 rpm
(as published in General Motors sales literature)

All of the above engines are in stock form, no headers etc. (Add 5 to 15 hp and 5 to 10 lb-ft of torque in the mid range rpm with headers.)

GM Chevrolet 3.4 crate engine with Edelbrock manifold and #8007 Holley 390cfm carb, 1 1/2 headers and 1.6 ratio crane roller rocker arms
Power Output: 220 hp @ 5000 rpm
Torque: 210 lb @ 2700 rpm
(information supplied by CCE customer, based on chassis dyno results.)

1974 Rover 3.5 V8 Twin SU Carburetors
Power Output: 137 bhp @ 5000 rpm
Torque: 193 lb ft @ 2900 rpm
(information taken from “MGB” by E. Wilson McComb)

1981 Rover 3.5 V8 Fuel Injected
Power Output: 148 bhp @ 5100 rpm
Torque: 180 lb ft @ 3000 rpm
(information taken from “Triumph TR8 Restorers Guide” by Bill Piggott)

Note: Peak torque on the Chevrolet V6 comes in at a lower rpm than the Rover 3.5L V8.