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Scat 9-239-4125-2138 Flathead Ford Stroker Crankshaft, 4-1/8 Inch

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Specs
Sold in Quantity:
Each
Rod Journal Diameter:
2.138"
MFG. Part #:
9-239-4125-2138
Garage Sale:
No
Rod Length:
7.00
Stroke:
4.125
Scat 9-239-4125-2138 Flathead Ford Stroker Crankshaft, 4-1/8 Inch

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Details

Reviews

Q & A

What's in the Box

These Scat flathead cranks are made from series 9000 material which is the strongest cast material known. Shot peened, ground and micro-polished to original specs. Uses 1949-1953 bearings.

  • Rod Length:  7.000"
  • Rod Pin:  2.138"
  • Internal balance

Customer Reviews

This product has no reviews.

Product Q&A

2 questions : 2 answers

1 answers

what size bolt holds the crank balancer on,is it 5/8 as the original equip is

mike215
New Haven, IN, USA
February 02, 2014

what size bolt holds the crank balancer on,is it 5/8 as the original equip is

Answers

February 03, 2014
EricM
Yes this crank uses the same balancer bolt as the original crank does.
1 answers

Should a harmonic balancer be used with this?

Sam
Sun Prairie, WI
October 13, 2015

Should a harmonic balancer be used with this?

Answers

October 20, 2015
John
Expert
Use of a harmonic balancer is recommended and we offer the Fluidampr for the narrow belts number 755690201 and for the wide belt number 755550203.
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These Scat flathead cranks are made from series 9000 material which is the strongest cast material known. Shot peened, ground and micro-polished to original specs. Uses 1949-1953 bearings.

  • Rod Length: 7.000"
  • Rod Pin: 2.138"
  • Internal balance
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  • Rod Length: 7.000"
  • Rod Pin: 2.138"
  • Internal balance
Arias 4.125 Forged Flathead Ford Pistons 3.248 Bore
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If you are going to spend the time and money to build the flathead of your dreams, you just as well spring for Arias forged pistons. Arias forgings work great with nitrous and up to 10 psi on blown engines. They come as a set of eight and include wrist pins, locks and piston rings. They are a three ring design and work with the stock 7" rod length. Stock flathead bore size was 3.188"

Each piston set includes:

  • (8) Forged Aluminum Pistons
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Item Details

Comp. Height - 1.374"
Speedway 1949-1953 Flathead Ford V8 Main Engine Bearings-Standard Bore
(Part #9101536-STD)
                        

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.
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  • 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.
King 1939-1948 Flathead Ford V8 Engine Main Bearings, Standard Size
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Speedway Motors has all the parts you need to rebuild your Flathead Ford V8, including these high quality main bearings. Precision machined to the high standards demanded by today's rodders and restorers, these bearings for 1939-1948 "59A" Flatheads are available in standard size, .010-, .020 or .030-inch oversize.