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ATK High Performance Chevy LM7 5.3L GEN IV Short Blocks
Not Yet Reviewed
ATK High Performance Chevy LM7 5.3L Gen IV short blocks are assembled with OE flat top pistons and offer these engine specifications:
* Seasoned 5.3L LM7 Gen IV
* Seasoned 5.3L LM7 Gen IV
ATK High Performance Chevy LM7 5.3L Gen IV short blocks are assembled with OE flat top pistons and offer these engine specifications:
* Seasoned 5.3L LM7 Gen IV block
* 1999-2007 year range
* Bore/stroke: 3.810 in. x 3.622 in.
* Displacement: 330 cu.in
* OEM GM 58-tooth reluctor wheel crankshaft
* OEM GM forged powder metal rods
* Stock hypereutectic flat top pistons with two valve reliefs
* Compression ratios: 61cc = 9.8:1/64cc = 9.5:1/68cc = 9.1:1
-- Can vary due to deck height/gasket thickness
* Plasma moly rings
* Camshaft bearings: Installed and clocked to OEM position
* Freeze plugs: Installed
* Seasoned 5.3L LM7 Gen IV block
* 1999-2007 year range
* Bore/stroke: 3.810 in. x 3.622 in.
* Displacement: 330 cu.in
* OEM GM 58-tooth reluctor wheel crankshaft
* OEM GM forged powder metal rods
* Stock hypereutectic flat top pistons with two valve reliefs
* Compression ratios: 61cc = 9.8:1/64cc = 9.5:1/68cc = 9.1:1
-- Can vary due to deck height/gasket thickness
* Plasma moly rings
* Camshaft bearings: Installed and clocked to OEM position
* Freeze plugs: Installed
ATK High Performance Chevy LM7 5.3L Gen IV short blocks are assembled with OE flat top pistons and offer these engine specifications:
* Seasoned 5.3L LM7 Gen IV block
* 1999-2007 year range
* Bore/stroke: 3.810 in. x 3.622 in.
* Displacement: 330 cu.in
* OEM GM 58-tooth reluctor wheel crankshaft
* OEM GM forged powder metal rods
* Stock hypereutectic flat top pistons with two valve reliefs
* Compression ratios: 61cc = 9.8:1/64cc = 9.5:1/68cc = 9.1:1
-- Can vary due to deck height/gasket thickness
* Plasma moly rings
* Camshaft bearings: Installed and clocked to OEM position
* Freeze plugs: Installed and sealed
* Oil galley plugs: Installed and sealed
* Seasoned 5.3L LM7 Gen IV block
* 1999-2007 year range
* Bore/stroke: 3.810 in. x 3.622 in.
* Displacement: 330 cu.in
* OEM GM 58-tooth reluctor wheel crankshaft
* OEM GM forged powder metal rods
* Stock hypereutectic flat top pistons with two valve reliefs
* Compression ratios: 61cc = 9.8:1/64cc = 9.5:1/68cc = 9.1:1
-- Can vary due to deck height/gasket thickness
* Plasma moly rings
* Camshaft bearings: Installed and clocked to OEM position
* Freeze plugs: Installed and sealed
* Oil galley plugs: Installed and sealed
Showing In Stock Items. Show All 1 Items.
Engine Assembly, Short Block, 58 Tooth Reluctor Wheel, Hypereutectic Pistons, LM7, 330 CID, Chevy, LS, Each
Part Number: HPE-SP115
Not Yet Reviewed
Estimated Ship Date: May 1, 2026 if ordered today
Estimated Ship Date: May 1, 2026 if ordered today
