1949-53 Ford Flathead Main Bearings
1949-53 Ford Flathead Main Bearings
Speedway Motors

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#9101536

1949-53 Ford Flathead Main Bearings

  • Precision built to the high standards demanded by today's rodders and restorers, these silicon bi-metal bearings are available in standard size, .010", .020", or .030" undersize
  • Improves Crankshaft Finish, silicon particles reduce/eliminate microscopic ferrite peaks on improperly ground/polished nodular cast iron crankshafts
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$154.99

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Product Summary

  • Precision built to the high standards demanded by today's rodders and restorers, these silicon bi-metal bearings are available in standard size, .010", .020", or .030" undersize
  • Improves Crankshaft Finish, silicon particles reduce/eliminate microscopic ferrite peaks on improperly ground/polished nodular cast iron crankshafts
  • Improved oil clearance, because of reduced wear, silicon bearings make it possible to maintain OE clearances over the life of the engine, which reduces operating noise, vibration, and excess oil flow
  • Tolerance Control, all shells matched to ± .0001" vs. the competitions' ± .00025"
  • Corrosion Resistance, defends against corrosion caused by unleaded fuels and moisture
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Key Specs

MFG. Part #Select Undersize
BrandSpeedway Motors
Bearing Undersize.030"
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Details

Speedway Motors has all the parts you need to rebuild your Flathead Ford V8, including these high quality main bearings. Precision built to the high standards demanded by today's rodders and restorers, these silicon bi-metal bearings are available in standard size, .010", .020", or .030" undersize.

  • Improves Crankshaft Finish: Silicon particles reduce/eliminate microscopic ferrite peaks on improperly ground/polished nodular cast iron crankshafts.
  • Wear Resistance: During engine operation, silicon particles round off crank journal high spots, reducing friction and related wear.
  • Improved oil clearance: Because of reduced wear, silicon bearings make it possible to maintain OE clearances over the life of the engine, which reduces operating noise, vibration, and excess oil flow.
  • Tolerance Control: All shells matched to ± .0001" vs. the competitions' ± .00025"
  • Temperature Threshold: Silicon bimetal material melts/flakes at 662° F vs. tri-metal at 365° F.
  • Corrosion Resistance: Defends against corrosion caused by unleaded fuels and moisture.
  • Environmentally Friendly: All KING silicon bimetal engine bearings are "Lead Free".
  • O.E. preferred material: Most O.E. engines today use and enjoy the benefits of silicon bimetal bearings.

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

Specifications

KEY SPECS
MFG. Part #Select Undersize to see
BrandSpeedway Motors
Bearing Undersize.030"
GENERAL
Sold in QuantitySet

Ratings & Reviews

4.9

23 Reviews

Overall Assessment

Customers are pleased with the quality of the bearings and their excellent fit, noting they are a significant component for respective engine builds or rebuild projects. The bearings are praised for being of high quality with a "perfect fit" and easy installation, which is deemed convenient. Their functionality seems satisfactory as customers often express a desire to repurchase. Some have identified them as King bearings which are applauded as the 'gold standard'. Additionally, some buyers have appreciated them being priced well, implying good value for money. A few have also positively commented on the exactitude of fit when accompanying cranks. It's clear that these bearings are a favorite among users and frequently recommended for engine-related needs.

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4.9

23 reviews

5

21

4

1

3

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2

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Most Liked Positive Review

5.0

great quality.............superior produ

I've never been disappointed with any of the items i've purchased from speedway............way out-of-the-way service!! Technical assistance has also been superb even tho' your survey specifically said to NOT write about this............Main bearing set was exactly what I was looking for!!

Most Liked Negative Review

3.0

I will buy again

Good product

Filter by Ratings

I would buy this again

5.0

11 months ago

Hank

Surprise, AZ

Verified

After getting the correct bearing for my block they fit perfectly. Very happy

Would Recommend

I would buy this again

5.0

a year ago

Freddyfairlane

Winnipeg Canada

Verified

Good quality work as it should

Would Recommend

Good brand in bearings

5.0

2 years ago

Carson Customs

Oxford Ks

Good brand good product.

Would Recommend

Yes i buy this again but hope I don't have to.

5.0

3 years ago

Smiley

Griffin Ga

Verified

They seem to be very good bearings. Have not got a chance to run engine but think they will work fine.

Would Recommend

T-

5.0

3 years ago

Dobie

Arden Hills, MN

Verified

The parts look good but as the crank was just turned to 20 under and as the crank is 80miles from the bearings I don't know how they fit. Hopefully good.

Would Recommend

1953 flathead main bearings 10 under perfect fit.

5.0

4 years ago

Ski

Lake villa il

Verified

Excellent except for back order, was worth the wait.

I would buy this product again.

5.0

5 years ago

JIM

Huntsville, AL

Verified

Arrived on time and in good shape.

Would Recommend

Great parts

5.0

5 years ago

Lec

Grafton wv

Verified

Parts work as expected. Great delivery. Speedy transaction.

Would Recommend

Yes

5.0

5 years ago

Paul's coupe

Jackson Michigan

Verified

BEARINGS fit as they should.

Would Recommend

They look great

5.0

6 years ago

Ken Kelsey

Utah

Verified

Very good product

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Showing 10 of 23 reviews

Questions & Answers

3 Questions • 3 Answers

Hello, Do you know the size for the different part (STD, 0.1, 0.2 and 0.3) because for choose a good I need the mesurement of each part. I have a french block 49-53 . Thanks.

by Fred

• 8 years ago

1 answer

View Answer

Hello; is it adaptable on french ford vedette 49 to 53 ? tell me ID, OD and width please thanks

by Dominique

• 14 years ago

1 answer

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Do you have Bearings for 1949 - 53 Sidevalve V8 Ford Motor. Main Bearings 30 thousand" under. Big end bearings 40 thousand" under. Piston rings 4ring 3 3/16th 30 thousand" over.

by Sue Jones

• 15 years ago

1 answer

View Answer

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