Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads
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For early Ford and Mercury Flathead 24-stud V8 engines, 1938-1948. Extensive R&D and modern CAD systems give these heads more power potential and greater heat control than any before! Work well on stock or modified engines. Has a 65cc chamber producing 8:1 compression with the stock bore & stroke.
- The original Edelbrock design for Fords and Mercurys
- Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics
- Cast at the Edelbrock Foundry in the USA of T-6 tempered A356 aluminum
- 8.0:1 compression ratio on blocks with a 3/16" base relief (stock bore and stroke)
- Compression ratio increase is approximately 3/10 of a percent with each 1/8" stroke
NOTE: These heads should accept .410 valve lift. Edelbrock has changed the spark plug configuration for these heads recently. They now recommend Champion plug 271-RC12YC or Autolite 373-3924.
325-1125 Instructions (PDF)
- 2-3/8" from the bottom surface to the top of the fins
- 1-7/8" from the bottom surface to the top (not including the fins)
- Use with copper head gaskets
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Q & A
Speedway Motors and Classic Trucks called on GM Performance to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.