From the ad for the Cobra:

427 cu in motor with 550 HP.

Features include:

- Rodeck 350 alluminum block.
- Billet Crank by Scat Cranks (41/8" bore x 4" stroke)
- Connecting rods - Track Lite by Manley. Ross custom pistons.
- Compression ratio of 10.2 to 1
- Aluminum 210cc cylinder heads by Air Flow Reasearch
- Solid Roller cams by Crower, Jesel Rocker Arm Shafts and Cam Drive kit
- Jones Front Pulleys
- 4 Weber 48 ida' Carbs
- Intake Manifold by Pierce Manifolds