Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads

#3251125

Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads

Name: Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads
Brand: Edelbrock
SKU: 3251125
Price: 1152.95 USD
Availability: InStock
Rating: 5 (2 reviews)

2 Reviews

6 Questions

This is the original Edelbrock design for Fords and Mercury's
Measures 2-3/8" from the bottom surface to the top of the fins
Specifically designed to fit the 1939-1948 Ford flathead V8 engine

Letter Type:

Traditional

Block Type

$1,152.95

/pair

In Stock

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Product Summary

Bare Cylinder Head Style, Aluminum, Natural

This is the original Edelbrock design for Fords and Mercury's
Measures 2-3/8" from the bottom surface to the top of the fins
Specifically designed to fit the 1939-1948 Ford flathead V8 engine
They a cast at the Edelbrock Foundry in the USA of T-6 tempered A356 aluminum
Features a 8.0:1 compression ratio on blocks with a 3/16" base relief (stock bore and stroke)

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Key Specs

MFG. Part #	1125
Cylinder Head Style	Bare
Material Type	Aluminum
Finish	Natural
Combustion Chamber Volume	65cc

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Edelbrock 1125 Details

Edelbrock Flathead Cylinder Head

Designed specifically for Ford Flathead engines from 1938 to 1948, the Edelbrock #1125 Flathead Cylinder Heads offer the perfect blend of performance, durability, and classic style.

Compatibility: Fits Ford and Mercury Flathead 221 (3.6L) & 239 (3.9L) engines.
Design: Features the original Edelbrock script logo and rugged internals and externals, ribbed for enhanced durability.
Material: Cast in the USA at the Edelbrock Foundry from T-6 tempered A356 aluminum for maximum strength and longevity.
Performance: Increased water capacity for improved cooling, combined with excellent breathing characteristics for optimal engine performance.
Compression: The 65cc heads support an 8.0:1 compression ratio on blocks with a 3/16" base relief (stock bore and stroke). The compression ratio increases approximately 3/10 of a percent with each 1/8" stroke.

Further enhance the performance and look of your Ford and Mercury cars with the Edelbrock Flathead Cylinder Head. Suitable for those seeking to retain the vintage aesthetic while demanding modern performance.

Charts

325-1125 Instructions (PDF)

Specs

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

Guides & Documents

Cylinder Heads Installation Instructions (3251125)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

WARNING:

Cancer and Reproductive Harm – www.P65Warnings.ca.gov

CARB warning

Edelbrock 1125 Specifications

KEY SPECS
MFG. Part #	1125
Brand	Edelbrock
Cylinder Head Style	Bare
Material Type	Aluminum
Finish	Natural
Combustion Chamber Volume	65cc

GENERAL
Combustion Chamber Volume Range	60cc - 69cc
Spark Plug Style	Straight
Exhaust Port Shape	Round
Notes	Uses 14mm spark plugs with 3/4" reach, and flat gasket seals
Sold in Quantity	Pair
GTIN Code	085347011254

Ratings & Reviews

2 Reviews

Overall Assessment

Product reviews affirm its high caliber, noting improvements in performance such as enhanced horsepower and cooler operation. The replacement heads are of great quality, practically designed for easy installation. They're notably suitable for flat head engines, recommended for their engine-boosting abilities. A contrast against competitors is the product's American sourcing, hinting at superior standards. Material durability is hinted at by the prompt need for replacing a previously cracked head.

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2 reviews

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USA quality

5.0

2 years ago

Davey

Verified

Great quality and fast shipping

Would Recommend

Replacement heads

5.0

2 years ago

Tony

Plant City,Florida

Verified

My original head had a Crack in it and needed replacing.I ordered two new heads and they were here in 3 days.I couldn't get them installed for 2 weeks.My mechanic installed them and did a great job.The car has more horsepower and running cooler I would recommend these heads to all Flat head engine owners.

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

6 Questions • 6 Answers

Sort Questions

Will these heads fit onto a 49 to 53 block without any modification to the head or block? Will stock head bolts for a 49 to 53 engine work? I want the look of the center water outlet instead of at the front.

by Mario Scarpino

• 8 years ago

1 answer

View Answer

I have a 1948 Ford engine (complete OEM) Can I install this cylinder head without adaptation? I know there are some different kind of Edelbrock heads: one of them has a better compression for best performance. I'm not looking for a race car, only to increase a little more the engine power.

by buns-mx

• 10 years ago

1 answer

View Answer

Can stock head studs be utilized with these heads, or is it required to install new studs?

by Craig

• 10 years ago

1 answer

View Answer

Will part # 56013953-39 offe.stud kit. work with Edelbrock heads pt.# 3251125 I placed my order for New Edelbrock heads part # 3251125 and offenhauser 39-48 Cylinder head stud kit.part # 56013953-39 Will the offenhauser stud kit work for my edelbrock heads? After I placed my order I was reading a tech tip and it said to use head stud kit part # 910-15310 and to specify offenhauser or edelbrock heads. Will what I ordered work?

by fordflatheadeddie1920

• 13 years ago

1 answer

View Answer

Do Edelbrock heads come in a polished version? if so how much.

by fordflatheadeddie1920

• 13 years ago

1 answer

View Answer

Will the offset Offy. generator bracket work on these heads? Will the fins have to be ground down? Also what length studs do I need for the heads and the bracket mount? Thanks for your help!

by Rich

• 14 years ago

1 answer

View Answer

6 of 6 questions shown

Fitment

1932 Ford 1 Ton Pickup

136 Ford Flathead V8
221 Ford Flathead V8

1933-1936 Ford 1 Ton Pickup

136 Ford Flathead V8
Ford Flathead V8 21 Stud 221 40
Ford Flathead V8 17 Stud 221 18

1937-1938 Ford 1 Ton Pickup

Ford Flathead V8 17 Stud 136 V8-60
Ford Flathead V8 17 Stud 136 74
221 Ford Flathead V8

1939-1940 Ford 1 Ton Pickup

136 Ford Flathead V8
239 Ford Flathead V8

1941-1947 Ford 1 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1932-1938 Ford 1/2 Ton Pickup

136 Ford Flathead V8
221 Ford Flathead V8

1939-1947 Ford 1/2 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1932-1938 Ford 3/4 Ton Pickup

136 Ford Flathead V8
221 Ford Flathead V8

1939-1947 Ford 3/4 Ton Pickup

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Club

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Sedan

239 Ford Flathead V8

1953 Ford Country Sedan

255 Ford Flathead V8
337 Ford Flathead V8

1952 Ford Country Squire

239 Ford Flathead V8

1953 Ford Country Squire

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Crestline

255 Ford Flathead V8
337 Ford Flathead V8

1949 Ford Custom

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Customline

255 Ford Flathead V8
337 Ford Flathead V8

1939-1940 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford F-100

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-250

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford F-350

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F1

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F1

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F2

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F2

255 Ford Flathead V8
337 Ford Flathead V8

1948 Ford F3

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Ford F3

255 Ford Flathead V8
337 Ford Flathead V8

1953 Ford Mainline

255 Ford Flathead V8
337 Ford Flathead V8

1932 Ford Model 18

136 Ford Flathead V8
221 Ford Flathead V8

1942 Ford Model 21 A Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1933-1934 Ford Model 40

136 Ford Flathead V8
221 Ford Flathead V8

1934 Ford Model 40 A

136 Ford Flathead V8
221 Ford Flathead V8

1933 Ford Model 46

136 Ford Flathead V8
221 Ford Flathead V8

1935 Ford Model 48

136 Ford Flathead V8
221 Ford Flathead V8

1935 Ford Model 50

136 Ford Flathead V8
221 Ford Flathead V8

1936 Ford Model 67

136 Ford Flathead V8
221 Ford Flathead V8

1936 Ford Model 68

136 Ford Flathead V8
221 Ford Flathead V8

1937 Ford Model 74

136 Ford Flathead V8
221 Ford Flathead V8

1937 Ford Model 78

136 Ford Flathead V8
221 Ford Flathead V8

1938 Ford Model 81 A

136 Ford Flathead V8
221 Ford Flathead V8

1938 Ford Model 82 A

136 Ford Flathead V8
221 Ford Flathead V8

1938 Ford Model 85

136 Ford Flathead V8
221 Ford Flathead V8

1932-1934 Ford Model BB

136 Ford Flathead V8
221 Ford Flathead V8

1940 Ford Pickup

221 Ford Flathead V8

1953 Ford Ranch Wagon

255 Ford Flathead V8
337 Ford Flathead V8

1932-1938 Ford Sedan Delivery

136 Ford Flathead V8
221 Ford Flathead V8

1939-1942 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1946-1947 Ford Sedan Delivery

221 Ford Flathead V8
239 Ford Flathead V8

1939-1940 Ford Standard

136 Ford Flathead V8

1953 Ford Sunliner

255 Ford Flathead V8
337 Ford Flathead V8

1942 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1946-1948 Ford Super Deluxe

221 Ford Flathead V8
239 Ford Flathead V8

1953 Ford Victoria

255 Ford Flathead V8
337 Ford Flathead V8

1952-1953 Mercury Custom

255 Ford Flathead V8
337 Ford Flathead V8

1946-1948 Mercury Mercury

221 Ford Flathead V8
239 Ford Flathead V8

1949-1952 Mercury Mercury

255 Ford Flathead V8
337 Ford Flathead V8

1950-1953 Mercury Monterey

255 Ford Flathead V8
337 Ford Flathead V8

1941 Mercury Series 19A

239 Ford Flathead V8

1942 Mercury Series 29A

221 Ford Flathead V8
239 Ford Flathead V8

1939 Mercury Series 99A

239 Ford Flathead V8

1940 Mercury Series O9A

239 Ford Flathead V8