Long Blocks
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LSXceleration 385HP 330CI 5.3L 1999-2007 Long Block 24x By ATK
ATK
$4,545.00LSXceleration 385HP 330CI 5.3L 1999-2007 Long Block 24x By ATK This engine was designed to be a performance upgrade for a 1999-2007 Chevy Truck LM7 or LS swap in a hot rod. Expect big mid to upper end power, will have a noticeable idle. For optimal...54-385HP97$4,545.00 -
LSXceleration 460HP 371CI 6.0L 2001-2007 Long Block 24x By ATK
ATK
$5,749.00LSXceleration 460HP 371CI 6.0L 2001-2007 Long Block 24x By ATK This engine was designed to be a performance upgrade for LS based vehicles or perfect for a 2001-2007 Chevy Truck LQ4 or LS swap in a hot rod. Expect big mid to upper end power, will have a...54-460HP93$5,749.00 -
LSXceleration 500HP 347CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK
ATK
$7,899.00LSXceleration 500HP 347CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK Engine Specifications:• HP: 500• TQ: 450• Block: OE LM7 5.3L Gen III• Bore/Stroke: 3.903” x 3.622”• Displacement (cu.in): 347•...54-LM7-LB-2$7,899.00 -
LSXceleration 505HP 371CI 6.0L 2001-2007 Long Block 24x By ATK
ATK
$5,949.00LSXceleration 505HP 371CI 6.0L 2001-2007 Long Block 24x By ATK This engine was designed to be a performance upgrade for LS based vehicles or perfect for a 2001-2007 Chevy Truck LQ4 or LS swap in a hot rod. Expect big mid to upper end power, will have a...54-505HP109$5,949.00 -
LSXceleration 515HP 383CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK
ATK
$8,299.00LSXceleration 515HP 383CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK This is an LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads making a very streetable 515HP+. Expect big mid to upper end power, will have a...54-LM7-LB-3$8,299.00 -
LSXceleration 540HP 383CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK
ATK
$8,599.00LSXceleration 540HP 383CI 5.3L LM7 Long Block w/ CNC Cathedral Port Heads By ATK This is an LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads making a very streetable 540HP+. Expect big mid to upper end power, will have a...54-LM7-LB-4$8,599.00 -
LSXceleration 550HP 364CI 6.0L LQ9 Long Block w/ CNC Cathedral Port Heads By ATK
ATK
$8,749.00LSXceleration 550HP 364CI 6.0L LQ9 Long Block w/ CNC Cathedral Port Heads By ATK This is an LQ9 based engine with LS3 Aluminum heads making a very streetable 550HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance...54-LQ9-LB-1$8,749.00 -
LSXceleration 550HP 370CI 6.0L LQ4 Long Block w/ CNC Cathedral Port Heads By ATK
ATK
$8,549.00LSXceleration 550HP 370CI 6.0L LQ4 Long Block w/ CNC Cathedral Port Heads By ATK This is an LQ4 based engine with LS3 Aluminum heads making a very streetable 550HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance...54-LQ4-LB-1$8,549.00 -
LSXceleration 600HP 408CI 6.0L Stroker LQ4 Long Block 4.030 58x By ATK
ATK
$9,748.00LSXceleration 600HP 408CI 6.0L Stroker LQ4 Long Block 4.030 58x By ATK This LQ4/408CI Stroker with LS3 Aluminum heads is making 600HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers,...54-600HPLS01$9,748.00 -
LSXceleration 620HP 415CI Stroker LS3 58x Long Block By ATK
ATK
$10,744.00LSXceleration 620HP 415CI Stroker LS3 58x Long Block By ATK This LS3/415CI Stroker with LS3 Aluminum heads is making 620HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune...54-620HPLS02$10,744.00