Name: ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI HP32C-EFI - X Factors Motorsports
Price: 4234.00 USD
Availability: InStock

ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI HP32C-EFI

$4,234.00

Crate Engine, GM 350 Small Block Stage 3, 350 HP, Long Block, External/Internal Engine Balance, Vortec Heads, EFI, Each

Overview

Brand: ATK High Performance Engines

Manufacturer’s Part Number: HP32C-EFI

Part Type: Crate Engines

Product Line: ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI

Summit Racing Part Number: HPE-HP32C-EFI

UPC: 653517517815

Crate Engine Family: Chevy Small Block

Actual Engine Displacement: 5.7L/350

Crate Engine Cylinder Head Material: Cast iron

Engine Block Material: Cast iron

Advertised Compression Ratio: 9.5:1

Assembled: Yes

Engine Balance: Internal/External

Cam Style: Hydraulic roller, OE roller

Rear Main Seal Style: 1-piece

Intake Manifold Included: Yes

Intake Manifold Style: Fuel Injection

Cylinder Heads Included: Yes

Carburetor Included: No

Throttle Body Included: Yes

Distributor Included: Yes

Oil Pan Included: Yes

Valve Covers Included: Yes

Timing Cover Included: Yes

Water Pump Included: Yes

Harmonic Balancer Included: Yes

Flexplate Included: Yes

Flywheel Included: No

Air Cleaner Included: No

Spark Plugs Included: Yes

Spark Plug Wires Included: Yes

Computer Included: Yes

Wiring Harness Included: Yes

Water Pump Style: Long

Supercharger Included: No

Remanufactured: Yes

Quantity: Sold individually.

Notes: Includes FiTech EFI system.

ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI

ATK High Performance GM 350 Vortec 350 hp Stage 3 long block crate engines with EFI are designed for better drivability and trouble-free cold starts with no tuning required, regardless of elevation, driving habits, or part swap! Based around FiTech Self-Learning EFI systems, these engines come complete from throttle body down to the oil pan. The only thing you’ll need is to supply is the fuel system–inline, in-tank, or the FiTech Fuel Command Center. They’re dyno-tested with your EFI system and ready to go!

Engine specifications:

* HP: 350
* TQ: 400
* Block: OE roller block 4-bolt main 1-pc. seal 1996-2000
* Bore/Stroke: 4.040 in. x 3.480 in.
* Displacement: 350CI
* Crankshaft: OE reground external balance rear of crank/internal balance front of the crank
* Rods: OE powder metal 5.7 in.
* Pistons: Hypereutectic 9.5:1 compression
* Rings: Moly
* Camshaft: Hyd. Roller
* Cam Specs: 220/224 @ 50 .495in/.502ex 110LSA
* Timing Chain: Double roller
* Cylinder Heads: Vortec cast iron 67cc 1.94/1.50
* Rocker Arms: Stamped steel 1.5 ratio
* Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some Corvettes and 62-67 Chevy II’s)
* Oil Pump: Melling STD volume
* Balancer: Internally balanced – PowerBond #PB1046-N
* Flexplate: Externally balanced – Pioneer #FRA-159
* Intake Manifold: ATK HP dual plane
* Distributor: HEI (Iron Gear)
* Water Pump: OE long pump
* EFI System: Fitech Go Street EFI 400HP (throttle body, wire harness and hand held unit included)

* Fuel Pump: Not Provided – must run electric pump or mechanical fuel pump with Fitech fuel command center
* Spark Plugs: Autolite #605
* Spark Plug Wires: 8mm

Engine info:

* Oil: Conventional/Non Synthetic 10W30
* Oil Filter: Wix or K&N
* Timing: 34-36 degrees
* Spark Plug Gap: .035 in.
* Firing Order: 18436572
* Octane: 91+
* Stall Converter: Stock
* Exhaust: 1 5/8 headers

Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.

1. Processing Time

Orders are typically processed within 1–2 business days after payment is confirmed.
Orders placed on weekends or holidays will be processed on the next business day.

2. Delivery Times

Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.
International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.

3. Shipping Rates

United States: Free standard shipping on all orders.
International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.

4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI HP32C-EFI

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ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI HP32C-EFI

Reviews

1. Processing Time

2. Delivery Times

3. Shipping Rates

4. Carriers Used

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