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Product Summary

4.500" Engine Stroke, I-Beam Connecting Rod Type

  • This rotating assembly kit is specifically designed for the 429/460 BBF Big Block Ford
  • Connecting rods have a 6.700" length and are made from forged 4340 steel
  • Pistons have a 4.360" diameter and are made from hypereutectic aluminum
  • Diameter of the wrist pins is 0.990" and they weigh only 158 grams
  • Has a compression height of 1.350 and an OE deck height of 10.320

Comes as a Kit

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Key Specs

MFG. Part #915545
BrandSpeedway Motors
Connecting Rod TypeI-Beam
Piston MaterialHypereutectic Aluminum
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Speedway Motors 915545 Details

How about a 552 cubic inch monster motor for the street?  This rotating assembly allows you to turn your 429 or 460 Ford Big Block into a stump pulling monster. Kit includes a new 4-1/2" stroke Scat cast steel crankshaft, new 6.7" Scat I-beam connecting rods, Keith Black Hypereutectic pistons, Clevite rod and main bearings and plasma moly rings.

Pistons are available in 4.360" + .030" or .060" oversize which give you 545-552 cubic inches.  Pin size of 0.9898" and weight of 606 piston / 158 pin.  Effective Head Volume of 20.5cc and Head Type of Step Dish.   Compression Height 1.350 and OE Deck Height 10.320.  74cc heads yield 11.4-1 and 97cc is 9.8-1.  As with any stroker kit, you will need to check for clearance between connecting rods and block along with rod side clearance. This assembly will require balancing with your balancer and flywheel. This kit is externally balanced.

 

Speedway Motors 915545 Specifications

KEY SPECS
MFG. Part #915545
BrandSpeedway Motors
Connecting Rod TypeI-Beam
Piston MaterialHypereutectic Aluminum
GENERAL
Engine Stroke4.500"
Connecting Rod Length6.700"
Connecting Rod MaterialForged 4340 Steel
Connecting Rod Bolt Diameter7/16"
Piston Diameter4.360"
Piston Weight606 grams
Crankshaft MaterialCast Steel
Wrist Pin Diameter0.990"
Wrist Pin Weight158 grams
Sold in QuantityKit

Ratings & Reviews

4.8

8 Reviews

Overall Assessment

The product, a 545 Stroker Kit, garners positive reviews for its top-notch quality, practicality, and power augmentation features. Customers highly recommend it for its impressive upgrade from 429 to 545 cubes at a modest price, enabling significant horsepower enhancements. Not only does the kit deliver impressive power boosts (563hp and 671tq at 3400 rpm), but it also earned praise for its bolt-on capability and cost-effectiveness compared to rebuilding a stock engine. The product is a hit for everyday use and high-performance applications like mud running. Its quality and price outshine competitor offerings.

4.8

8 reviews

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I would buy this product again

4.0

3 years ago

JWD

Texas

Verified

Should supply H rated bearings with the kit.

Would Recommend

I would buy it a again

5.0

3 years ago

Hannah batten

Spencer wv

Verified

Every thing was great

Would Recommend

545 Stroker Kit

5.0

7 years ago

Larry

Kansas City

Verified

Great product and at close to the same price as a stock rebuild. Go from 429 cubes to 545 cubes for just a couple bucks

Would Recommend

No replacement for displacement.

5.0

7 years ago

Fred

Medford, OR

Verified

In the shop getting balanced. Great kit to make alot of horsepower at a low cost!!! 545 ci should do the job.

Would Recommend

Good kit for the money!

5.0

7 years ago

Kenneth

sweden

Its a bolt on kit and it works great for me, the engine gave me 563hp and 671tq at 3400 rpm whit this stroker kit and other uppgrades of course! its a nice daily driver machine

Would Recommend

Product is great for the price.

5.0

8 years ago

Meat

Morrow, GA.30260

Verified

I'm very happy with my product. The service was very courteous and patient. I will be shopping again soon.

Would Recommend

Good quality product .had broken part when it arrived but se

4.0

10 years ago

Rum runner

Seal cove me

Verified

Use this in my mud runner. Everything I needed

Would Recommend

STOCK IS A CROCK

5.0

14 years ago

Luke1974

forest lake ,minn

cheap way to build mega power,doesnt cost anymore than rebuilding a stock engineluke

Would Recommend

Showing 8 of 8 reviews

Fitment

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

  • 429 Ford 385 Series Big Block V8

Customer Impersonation Script