1966 Mercury Comet Cyclone GT

Paul Ceasrine · 10-25-2011, 12:08 PM

Car Life Magazine,,,,,,,,,,April 1966

Performance test of the 1966 Mercury Comet Cyclone GT,

390/335 HP, C-6 Automatic, with 3.25 Gears

Test was performed at Carlsbad Raceway Dragstrip, January 1966.
Editors Analysis;
* Plenty of usable torque on the low-end.
* Not much of a top-end performer.
* Restrictive valve passages in the cylinder head, hinder engine breathing.
* Valve size adequate (2.03" intake / 1.56" exhaust)
* Hydraulic-lifters limit attainable RPM.

* Performance results; 15.20 @ 90 MPH

Test was performed with 7.75 x 14" tires, and 3-speed console shifted automatic.
Shift points were 4800 RPM (1st to 2nd) and 4600 RPM (2nd to 3rd).

Note: The car came from the dealership, equipped with fabricated tubed headers,
with 3" dumps.

10-25-2011, 12:08 PM	#8
Paul Ceasrine VIP Member Join Date: Apr 2009 Posts: 2,546 Likes: 0 Liked 10 Times in 10 Posts	Re: 1966 Mercury Comet Cyclone GT Car Life Magazine,,,,,,,,,,April 1966 Performance test of the 1966 Mercury Comet Cyclone GT, 390/335 HP, C-6 Automatic, with 3.25 Gears Test was performed at Carlsbad Raceway Dragstrip, January 1966. Editors Analysis; * Plenty of usable torque on the low-end. * Not much of a top-end performer. * Restrictive valve passages in the cylinder head, hinder engine breathing. * Valve size adequate (2.03" intake / 1.56" exhaust) * Hydraulic-lifters limit attainable RPM. * Performance results; 15.20 @ 90 MPH Test was performed with 7.75 x 14" tires, and 3-speed console shifted automatic. Shift points were 4800 RPM (1st to 2nd) and 4600 RPM (2nd to 3rd). Note: The car came from the dealership, equipped with fabricated tubed headers, with 3" dumps. Last edited by Paul Ceasrine; 10-26-2011 at 11:52 AM.