Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads
Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads
Edelbrock

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#3251125

Edelbrock 1125 1939-48 Ford Flathead Cylinder Heads

  • 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
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Letter Type:

Traditional

Block Type

$1,152.95

/pair

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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 StyleBare
Material TypeAluminum
FinishNatural
Combustion Chamber Volume65cc
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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

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

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.
CA Prop 65
CARB warning

Edelbrock 1125 Specifications

KEY SPECS
MFG. Part #1125
BrandEdelbrock
Cylinder Head StyleBare
Material TypeAluminum
FinishNatural
Combustion Chamber Volume65cc
GENERAL
Combustion Chamber Volume Range60cc - 69cc
Spark Plug StyleStraight
Exhaust Port ShapeRound
NotesUses 14mm spark plugs with 3/4" reach, and flat gasket seals
Sold in QuantityPair
GTIN Code085347011254

Ratings & Reviews

5

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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5

2 reviews

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USA quality

5.0

2 years ago

Davey

PA

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

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

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • Ford Flathead V8 21 Stud 221 40

  • Ford Flathead V8 17 Stud 221 18

  • Ford Flathead V8 17 Stud 136 V8-60

  • Ford Flathead V8 17 Stud 136 74

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

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