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Wiseco 5.7 Hemi Pistons

Chrysler Dodge 5.7 Hemi Piston and Ring Sets

Wiseco 5.7 Hemi pistons are premium, high strength forged pistons and are ideal for use in high performance or racing Chrysler and Dodge 5.7 Hemi engines.

Stock OEM Chrysler Dodge 5.7L Hemi Engine Specs for Reference:

  • 5.7L 345 cubic inches stock bore size is 3.917 and stock stroke is 3.580
  • 5.7L using a 4.080 long stroker crank and stock bore produces 393 cubic inches. This size 5.7 stroker, as well as the .020 over size is often referred to as the modern 392 Hemi due to the popularity of the original Chrysler 392 Hemi name. The 4.080 stroker crank and .020 over size bore actually measures 395 cubic inches.
  • 6.243 stock connecting rod length
  • .945 stock piston pin diameter (Note: The Wiseco pistons on this page require the use of the matching K1 connecting rods as these pistons use either a .927 or .866 diameter wrist pin.)
  • Stock engine block deck height is 9.250 inches

345 Dodge and Chrysler 5.7 Hemi Pistons

Wiseco Chrysler Dodge 5.7 Hemi Piston Features

  • Forged pistons made from high strength 2618 Alloy. Will not shatter like hypereutectic or cast pistons.
  • Strong, strutted skirt is specially designed to run at as little as .004” clearance, with excellent skirt wear and minimal noise or rock.
  • Radiused Valve Pockets for detonation resistance and increased flow around valves.
  • Anti-detonation Grooves help keep the top ring groove free of carbon.
  • 1.2mm Nitride steel top ring, 1.2mm Napier 2nd, and Nitride 3mm oil for reduced friction for more horsepower.
  • Pressure Groove for enhanced ring seal.
  • Features Chrome Moly Pins and Spirolox®. (Tool steel pins optional.)
  • Brush domes require minimal deburring by the engine builder.
  • Wiseco ArmorGlideTM skirt coated for lower friction, reduced noise, and superior life.

Explanation of Wiseco 5.7 Hemi piston specs listed below:

  • 5.7 hemi forged pistonBore = Finished cylinder bore size in inches that piston is designed to work in
  • Stroke = Crankshaft stroke in inches that piston is designed to work with
  • Rod = Connecting rod length in inches that piston is made to work with
  • CH = Compression Height, also known as compression distance. This is the dimension, in inches, from the centerline of the pin bore to the top deck of the piston
  • Wt = weight in grams of one piston
  • Pin = pin diameter in inches, all pins 2.250" long
  • CCs = cc displacement in total of the valve reliefs, and any dish or dome
  • Compression Ratio = static compression ratio comparison of piston when used with different volume cylinder head chambers. Stock 5.7L Hemi heads built through 2008 had a 85cc chamber. 2009 and newer 5.7L heads have a 65cc chamber. 6.1 Hemi heads are 73cc
  • Piston Ring Set = part number for a complete engine set of plasma moly file fit piston rings, ring widths are 1.0mm, 1.2mm, 2.8mm. The rings listed here are for use with the Wiseco pistons listed beside them.
  • Piston and Ring Set = part number for a complete set of 8 forged pistons, piston pins, spiro locks and piston rings
Bore Stroke Rod CH Wt Pin CCs Compression Ratio Piston and Ring Set
65cc 73cc 85cc
3.917 std 3.580 6.243 1.205   .927 -10 9.5 8.8 8.0  
3.937 .020 over 3.580 6.243 1.205   .927 -10 9.5 8.8 8.0  
3.917 std 3.580 6.243 1.205 430 .927 +4 11.3 10.2 9.0 K466XS

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3.937 .020 over 3.580 6.243 1.205 439 .927 +4 11.3 10.2 9.0 K466X2

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5.7 392 Hemi Stroker Pistons for use with 4.080 Stroker Crank

3.917 std 4.080 6.125 1.080   .866 -24 9.5 8.9 8.0  
3.937 .020 over 4.080 6.125 1.080   .866 -24 9.5 8.9 8.0  
3.917 std 4.080 6.125 1.080 401 .866 -8 11.0 10.1 9.0 K465XS

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3.937 .020 over 4.080 6.125 1.080 403 .866 -8 11.0 10.1 9.0 K465X2

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3.917 std 4.080 6.125 1.080 423 .866 +12     10.7 K468XS

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3.937 .020 over 4.080 6.125 1.080 428 .866 +12     10.7 K468X2

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Even more 5.7 Hemi Piston Sets are Available

We also sell Chrysler and Dodge 5.7 Hemi performance pistons made by several other manufacturers such as CP, Ross, KB, Icon and more. If you want to check on other piston options, you may use the below links or contact us for assistance. We are constantly working with the major piston manufacturers to provide the best selection possible. We may have the piston set you need available, even though it is not listed on our website.


Custom 5.7L Hemi Pistons

If you do not see a set of pistons on this page that meet your requirements, we also sell custom forged pistons. Please contact us if you would like to discuss a custom set and we will be happy to work with you to insure you get pistons with the specs you need.


Wiseco K1 Connecting Rods 5.7 Hemi Rods and 5.7L Hemi Stroker Rods

5.7 Hemi Rod


K1 Technologies Mopar 5.7 Hemi connecting rods are 4340 steel H beam billet rods for superior strength and durability and are bronze bushed for use with full floating piston pins. With K1 you get a top quality, high performance racing rod set, for not much more than lesser quality aftermarket rods, or rebuilt stock rods.

  • C-C = center to center length in inches
  • Wt. = Weight in grams
Description c-c pin size rod journal housing bore Wt Part #
5.7 and 6.1 Hemi stock length 6.243 rods with 7/16 ARP2000 cap screws, .927 pin stock 6.243 .927 stock 2.125 stock 2.250 622

k1 dh6243anlb8-a

$666.04 $665.97

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Special 6.125 length light weight rods with 3/8 ARP2000 cap screws, 2.000 journal, .866 pin. Designed to be used with stroker cranks using a 2.00 inch rod journal and pistons using a .866 diameter pin and requiring a 6.125 inch long rod

6.125 .866 2.000 2.150 606

k1 dh6125ahgb8 -a

$666.04 $665.97

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K1 Technologies Chrysler Dodge 5.7 Hemi Stroker Crank

This K1 4340 forged steel crankshaft will fit in either a 5.7 liter or 6.1 liter Hemi engine block. The main difference in the 5.7 and the 6.1 is the stock bore size. Depending on which block and final bore size pistons you choose to use, you can build stroker hemi engines using these cranks of 397 cubic inches up to 426 cid. If you want to build a modern, light weight small block 426 Hemi, the crank, rods and piston sets listed on this page will give you parts you need to do so.

K1 Technologies 5.7 Hemi Stroker Crankshaft features and dimensions:

  • 4340 forged steel
  • Core hardened
  • Nitrided
  • Mag-Particle Inspected
  • Straight oil holes for best rod journal lubrication
  • Stock 5.7L Hemi main journal size of 2.559 in.
  • 6 bolt Chrysler rear flange
  • Wt = weight in pounds
  • We recommend using the matching K1 rods listed above with this crank
  • This crank uses the 4 bolt reluctor attachment pattern which is the stock 6.1 pattern. No reluctor gear is included with the crankshaft. If you need a reluctor gear, it is listed separately below.
Description Stroke Rod Pin Wt Part #
SB Chrysler Hemi Custom 4340 Forged Crank 4.080 Stroke 2.000 rod journal 4.080 2.000 56

k1 345-4080SA6F

$1161.69 $1161.11

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Molnar 5.7 6.1 6.4 hemi reluctor ring

For use with Molnar Technologies Gen3 Hemi Crankshafts

Description Part #

This reluctor gear is the correct one to use with Molnar Technologies Gen 3 Hemi stroker cranks in engines requiring a 32 tooth reluctor. It uses a 4 bolt attachment which is the same as the OEM Chrysler 6.1 crankshaft. The 2003 - 2008 5.7 and 6.1 used the 32 tooth wheel.



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If you have a 2009 or newer Gen3 Hemi with a 58 tooth reluctor and a Molnar Technologies crankshaft, this is the correct gear for you. (NOTE: Some people count the teeth on the 2009 and later as 60, but difference is only in how people count the large teeth, so even though some people say 58 and some 60, they are both the same reluctor) MRR-60

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2013 and Newer:

Chrysler / Dodge changed the OEM reluctor and engine management system in 2013. If you are working with a 2013 or newer vehicle and a Molnar Technologies crankshaft, then this is the proper 58 tooth reluctor to use.


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