8 Fairfax St SE
NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
Reserve Online Participant
Store Hours
Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
This store has been geolocated for you.
Looking to get a repair done? Find an AutoCare Center

Engine, Short Block - Remfd Hi-Perf
Added To Cart

Engine, Short Block - Remfd Hi-Perf

Part #: ATK SP38
Line: NAPA IronClad

This item is currently not at your store, but is available for order. Please call store to verify the specific location and delivery details for this item. Note that additional shipping charges may be required.

Requested quantity is not available. Please update the quantity below.

Recommended Items   

Features & Benefits

Warranty: Standard : See Manufacturer's Complete Written Policy


NAPA Ironclad Pricing Includes Prepaid Freight & Core Return from Servicing DC in the Contiguous 48 States. Performance Short Blocks hand built with premium parts, fully machined & measured for precision & balance

  • GM 6.0L iron LQ4 block, Manley 4340 forged crank 4.000 in. stroker internally balanced 24 tooth
  • Manley 4340 forged H-beam 6.125 in. rods with ARP 8740 bolts, 2618 forged +18 cc dished pistons
  • Cam bearings Installed & clocked to OEM position, brass freeze plugs installed & sealed
  • This short block is built with a mild compression ratio great for easy tuning on pump gas or running a small shot of nitrous. If used with nitrous there will be no warranty as there is more room for error with nitrous systems and tuning. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.
  • Oil galley plugs installed & sealed


Brand NAPA
Contents Block, crank, bearings, pistons, cam bearings & rings
Sub Brand IronClad
VMRS Code 045002068

Safety Information

Product Reviews