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All our pieces are built on a made-to-order basis.

Build times fluctuate based on current demand.

All sales are final.*

Due to the nature of Subaru Engines, GCH Long Block Racing products and services are sold without warranty of merchantability or fitness of purpose, expressed or implied. GCH Long Block Racing shall not, under any circumstances, be liable for any special, incidental, or consequential damages, including but not limited to damages or loss of other property or equipment, loss of profits or revenue, cost of purchased or replaced goods, or claims of customers of the purchaser which may arise and/or result from the sales, installation, or use of these parts.

Store Policies


We start building within one business day of your finalized purchase.


Short Blocks



Long Blocks


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Build Process


We accept cash, credit, and debit.*

Some payment options are subject to a convenience fee. Out-the-door prices vary by package. Sales tax, shipping, and core returns may apply.

Most builds require a security deposit, which the remainder will be paid through Quick books Via Bank Transfer button. *some bigger builds will have to be a wire transfer.

*Cash, bank transfers or wire transfer payments are required for any order or purchase over $1,000. This may fluctuate according to build.

We now accept Zelle.

Finance through Affirm.

Pay conveniently in monthly installments. See if you qualify today!

Affirm is available on select products. Click to see our options.

Payment Options


Orders are shipped the day after they are completed.

Shipping time varies by shipping company and destination.

Orders are usually delivered within 2 weeks of their completion. Consult tracking numbers for details and up-to-date information. These time frames are estimates, and the courier is ultimately responsible for package delivery time.



Because all our pieces are made on a custom build-to-order basis, everything we make is customized to your machine. Right after your purchase, ALL SALES ARE FINAL. We order, parts, and pieces to start and finish the build. Because of this, returns are limited to cases of mismatched engines, heads, or short block castings.


*If you are wondering on how our engines come, please refer to the listing you are inquiring about to see visually how they come.

Core Deposits: May change due to demand and availability ***ALL DEPOSITS ARE NON-REFUNDABLE. Due to us ordering the parts and starting the labor process along with dedicating and machining cases and or heads in the assembly line.

FOR CORE RETURNS: If you would like to use our "Core Return Shipping Method" let us know upon time of invoice and we will give you 30-days to send us back your old core which must be received exactly what we send you on castings and parts wise internally and externally, within that 30-day mark in order to be *eligible to receive the core return refund.


Failure in providing us your core within the 30 day period will result to late fees and/or loss of core credit/deposit, reason for this policy is due to lack of supply in this field. * Core must be rebuildable and in cosmetically decent conditions. Any damage will go against the core deposit, we charge based on damage and/ if the structural component can support any repairs.


Storage Fees for unpaid invoices may apply, GCH is not responsible for any left over parts the customer left or sent over. After 30 days of of unclaimed or unpaid invoices the product, parts or anything left over may become abandoned property in order to keep our facility organized. Contact us with any questions via email at any time.

Got questions? Check out our FAQs, or call 1-877-GCH-SUBI (1-877-424-7824)

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