Mesa Balancing Racing Engines uses our proven custom pistons with the 4340 forged crankshaft & H beam 4340 rods, this package gives you the ability to max out the factory sleeve block with no worries. This combo works great with Superchargers, turbos with a higher boost to make 1300. By far the best bang for the buck without a sleeved block you will find. (we can also sleeve blocks for higher target HP packages. Please call for pricing on sleeved blocks and time frame) $8495
| Displacement: | 427" | Bore: | 4.125" |
| Proven Power Rating: | 1400 RWHP | Stroke: | 4.000" |
| Compression Ratio: | 10.5:1 w/ 64cc Chamber | Rod Length | 6.125" |
| Cylinder Head Compatibility: | LT4, LT1 | Oil System Type: | Dry or Wet Sump |
| Block: | GM LT4 6.2L Aluminum |
| Crankshaft: | Callies 4340 Magnum Manley or Liberty with our Blueprinting Process |
| Connecting Rods: | Callies Ultra Billet Hor Manley -Beam w/ARP Ultra 7/16" Bolts |
| Pistons: | Diamond Mahle Wiseco , Manley CP,JE Forged (.300" material above top ring land) |
| Wrist Pins: | Tool Steel Heavy Wall .200" |
| Ring Pack: | NPR Stainless Top (for high heat applications) Napier Second, 3mm Oil |
| Bearings: | Clevite or ACL H-Series Main & Rods |
| Main Studs: | ARP |
***CORE EXCHANGE SHIPPING: MBRE is happy to assist you in shipping your block and crankshaft cores to help you save money. Exchanging your block & crank cores helps reduce the overall engine build cost without sacrificing quality. We can have your existing shortblock picked up at a location convenient for you.
MBRE Standard Shortblock Blueprinting Process:
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