Petty's Garage 6.4L HEMI Long Blocks
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Petty’s Garage 6.4L HEMI Long Block
Petty’s Garage has a complete lineup of performance HEMI engines all made in house in our state-of-the-art engine facility. Everything is precision machined on race quality engine building equipment. Our engines are built to withstand the most stressful environments imaginable. We initially test our combinations with our in-house engine dyno and calibrations staff. This ensures that our customer receive a proven engine combination that we feel comfortable putting Richard Petty’s name on.
Block Prep
- Cylinder hone with deck plate to simulate engine cylinder head torque
- Line hone
- Validate center lines
- Block deburr
- Test material thickness in critical locations
- Check deck surface
- Complete block cleaning
- Block painting (HEMI orange)
HEMI Long Block Components
- Mahle Proprietary Pistons, 2618 alloy w/gas ports
- Forged Steel Crankshaft
- Mopar if Stock Displacement
- 4340 Forged Steel Manley or Molnar if Aftermarket
- 4340 Forged Steel Manley or Molnar Connecting Rods
- ARP Rod Bolts
- ARP Main Studs
- Clevite Rod Bearings
- Clevite Main Bearings
- Steel Top Ring
- Tool Steel Wrist Pin
- Custom Grind Camshaft
- Petty’s Garage CNC Ported Cylinder Heads
- PSI 1511 Valve Spring Kit
- Cometic Head Gaskets
- ARP Head Studs
- Non-MDS Hellcat Lifter Set
- Custom Length Pushrods
- Mopar Rocker Arm Shafts w/ Fasteners
- New Mopar VVT Timing Set
| Name | Displacement | Year | Bore | Stroke | Rod Length | Piston Material | Crankshaft Material | Compression Ratio | VVT | Block Construction | Main Line Fastner |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Petty's Garage 6.4 Forged | 6.4 Liter, 392 CID | 2011 - Present | 4.090" | 3.724" | 6.200" | Mahle 2618 alloy Piston, Gas Ported | Stock Forged Steel | 9.5:1 - 11:1 | Yes | 6.4L, Cast Iron, Deep Skirt, Cross bolted Mains | ARP Studs 244-5400 |
| Petty's Garage 6.4 to 426 | 7.0 Liter, 426 CID | 2011 - Present | 4.100" | 4.050" | 6.125" | Mahle 2618 alloy Piston, Gas Ported | 4340 Forged Steel | 9.5:1 - 11:1 | Yes | 6.4L, Cast Iron, Deep Skirt, Cross bolted Mains | ARP Studs 244-5400 |
| Petty's Garage 6.4 to 448 | 7.4 Liter, 448 CID | 2011 - Present | 4.110" | 4.250" | 6.125" | Mahle 2618 alloy Piston, Gas Ported | 4340 Forged Steel | 11:1 | Yes | 6.4L, Cast Iron, Deep Skirt, Cross bolted Mains | ARP Studs 244-5400 |