Willy's Total Perf. Kit for GM 602 Crate Motor

1395   – Reward points

Willy's total performance package for GM 602 crate motor. Everything you need to get the best performance from your GM 602 crate motor.

    • 4% off
    Market price: $1459.95, you save $64.00
  • $1395.95
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  • Shipping info

    We deliver worldwide and to almost all countries. Call us at 704-871-0721 to get help with large international orders and we can help manually check the shipping for you. MORE INFO BELOW in Shipping Info section.

  • Payment methods

    Accepted payment methods

  • Return Policy

    We accept returns for up to 30 days from the purchase date. To be eligible for a return, your item must be unused and in the same condition that you received it. More Return Info below. 

This is the full package from Willy's Carbs for a 602.  

Everything you need to get the best performance from your GM crate engines. Kits are available for GM 602, GM 604, and GM CT525 engines. We’ve tried it all, so you don’t have to. We gained 30+ horsepower on the dyno with these kits. Willy’s total performance packages include carburetor, spacer, stud kit, gaskets, and spark plugs. Each carburetor is dyno tested and tuned for the GM crate engines. GM 602 carburetor has Holley metering blocks; the others have Willy’s externally adjustable metering blocks. GM CT525 carburetors are black powder coated. Ignition systems and headers are available for your application on request.

The kit includes:

602 Crate Motor Carb (item WCD80541-1)
1" Dual Plane Spacer (item WCD81503)
Stud Kit for 1" Spacer (item WCD200-2402)
Gasket, 4150 4-Hole Fel-Pro (item WCD1901)
Gasket, 4150 Open Fel-Pro (WCD1900)
(8) Spark Plugs (R5724-8)

Please note:  All carburetors are built to order and dyno tuned before shipping. If time is a factor for you, please call to verify lead times. 


    • Weight
      19 lbs
    • SKU
      WCD602 KIT
  • Manufacturer
    CHP, Ratman, Pump Gas, E-85, E-98
    Below 4000 feet above sea level, Above 4000 feet above sea level

Product questions

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Products typically ship out between the same day and 1-3 days. Depending on the time/day ordered and the product type. Some products are made to order to spec and will ship once built. Feel free to call us at 704-871-0721 if you have any questions about shipping. Also call us if you are ordering large items like race car bodies as those are hard for the freight system to calculate sometimes and it will overestimate. Thank you.

We accept the following payment methods:

Accepted payment methods

And now Venmo & PayPay Credit

Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. If the return is not based on a mistake on our part, a 15% restocking fee will apply.

Several types of goods are exempt from being returned. We also do not accept products that are hazardous materials, flammable liquids, or gases.

Additional non-returnable items:
* Gift cards
* Downloadable software products

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer. *Special cases might be returned to the manufacturer*

There are certain situations where only partial refunds are granted: (if applicable)
* Book with obvious signs of use
* Any item not in its original condition, that is damaged, or is missing parts for reasons not due to our error.
* Any item that is returned more than 30 days after delivery

Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next, contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at glnmaurer@circletracksupply.com.

Sale items (if applicable)
Only regular priced items may be refunded, unfortunately, sale items cannot be refunded.

Exchanges (if applicable)
We only replace items if they are defective or damaged, or if we made the mistake.  If you need to exchange it for the same item, send us an email at glnmaurer@circletracksupply.com and send your item to 304 5th Creek Road, Statesville, NC, 28625, United States.

To return your product, you should mail your product to:

304 5th Creek Road, Statesville, NC, 28625, United States.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.