GM Performance 604 Crate Bow Tie Logo Fast Burn Cylinder Heads- NEW-4TH DESIGN
GM Performance 604 Crate Bow Tie Logo Fast Burn Cylinder Heads
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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.
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Payment methods
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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.
Product Line | Fast Burn |
Assembled/Bare | Assembled |
Chamber Volume | 62 cc |
Plug Angle | Angle |
Intake Runner Volume | 210 cc |
Exhaust Runner Volume | 78 cc |
Intake Port Shape | Rectangle |
Intake Port Location | Stock |
Intake Port Raised Distance | 0.240 in |
Exhaust Port Shape | D |
Exhaust Port Location | Stock |
Exhaust Port Raised Distance | 0.200 in |
Intake Valve Size | 2.000 in |
Intake Valve Included | Yes |
Exhaust Valve Size | 1.550 in |
Exhaust Valve Included | Yes |
Valve Spring Included | Yes |
Intended Camshaft Style | Hydraulic Roller |
Maximum Lift | 0.530 in |
Valve Spring Diameter | 1.480 in |
Valve Spring Number | Single |
Valve Spring Damper | No |
Valve Spring Retainers Included | Yes |
Valve Locks Included | Yes |
Valve Seal Included | Yes |
Valve Seal Style | Umbrella |
Valve Seal Material | Rubber |
Rocker Studs Included | Yes |
Rocker Stud Size | 3/8-24 in |
Valve Guide Included | Yes |
Valve Guide Material | Bronze |
Perimeter Mount Valve Cover | Yes |
Center Mount Valve Cover | Yes |
Valve Seat Included | Yes |
Intake Valve Seat Material | Steel |
Exhaust Valve Seat Material | Steel |
Valve Seat Finish | Machined |
Combustion Chamber Finish | CNC Machined |
Intake Runner Finish | CNC Machined |
Exhaust Runner Finish | CNC Machined |
Intake Valve Angle | 23 Degree |
Exhaust Valve Angle | 23 Degree |
Material | Aluminum |
Color | Natural |
Finish | Natural |
Quantity | Each |
Notes: Features raised runners, check Suggested Parts for proper intake manifolds. Exhaust port is raised .200 inch over the factory location.
These fully assembled, CNC-machined aluminum Fast Burn cylinder heads from Chevrolet Performance are designed for 1958-2000 283-400 c.i.d. Chevy V8s. They quickly and completely burn the air/fuel mixture, ensuring higher cylinder pressure and more power. No additional porting is required--Chevrolet Performance Parts' cast-ported technology gives these heads maximum performance right out of the box. They're drilled and tapped for Vortec and raised port manifolds, they accept flange-mount or centerbolt-style valve covers, and will support in excess of 500 HP.
Product questions
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Apr 6, 2023, 18:00
Are these Nascar legal for Late Model Stock ???
Apr 7, 2023, 18:12YES THEY ARE A DIRECT REPLACEMENT FROM GM FOR THE 604. THANK YOU.
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.
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.
Shipping
To return your product, you should mail your product to:
CircleTrackSupply.com
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.