CP Bullet Mopar 5.7 L and 6.1 L Hemi Stroker Pistons Specs and Info:

• Engine Block OEM Chrysler, Dodge, Mopar 5.7L and 6.1L Hemi, as well as aftermarket race blocks based on these OEM spec blocks
• Bore = Finished bore size piston set is designed to work in
• Stroke = Crankshaft stroke piston is designed to work with
• CID = Final cubic inch displacement of engine based on this bore and stroke
• Rod = Rod length piston is designed to work with
• CD = Compression Distance
• Head Type Cylinder head types pistons are designed to work with, includes OEM and aftermarket heads made with OEM style chambers, valve angles and valve locations
• Disp = Net Displacement of the piston valve reliefs, dish and/or dome  in ccs
• Comp =  Compression as calculated with a 85cc head chamber volume, + .020" deck height and 8.6cc displacement head gaskets for 5.7 hemi heads and 72.5cc chamber, + .020" deck and 8.6cc gaskets for 6.1 Hemi heads
• Piston pins .866 x 2.250
• Valve Relief Depths =  Intake .160", Exhaust .045"
• Piston ring grooves are 1.5mm x 1.5mm x 3mm
• For Reference Stock Chrysler Dodge Mopar Modern Hemi bore and stroke specs as follows: 345 cid 5.7 L Hemi = 3.917 x 3.580 , 370 cid 6.1 L = 4.055 x 3.580

We recommend K1 Technologies 5.7 6.1 Hemi Rods and K1 Stroker cranks for use with these piston kits. The rod and crank info is listed below this piston chart.

6.1 Hemi .025 oversize

4.080

4.080

426 ci

6.1 Hemi .010 oversize

4.065

4.080

423 ci

6.1 Hemi .010 oversize

4.065

4.080

423 ci

6.1 Hemi .025 oversize

4.080

4.080

426 ci

5.7 Hemi .020 oversize

3.937

4.080

397 ci

5.7 Hemi .020 oversize

3.937

4.080

397 ci

K1 Technologies 5.7 and 6.1 Small Block Hemi Rods and 5.7L 6.1L Hemi Stroker Rods

K1 Technologies Mopar 5.7 Hemi and 6.1 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

special 6.125 length light weight rods with 3/8 ARP2000 cap screws, 2.000 journal, .866 pin

k1 dh6125ahgb8 -a

$666.04 $665.97

K1 Technologies Chrysler / Dodge 5.7 and 6.1 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 Tech 6.1 and 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 6.1L 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.

k1 345-4080SA6F

$1161.69 $1161.11