Support Information

Hours of Operation

Advisory sales personnel are available from 8 a.m. to 5 p.m. (CST) Monday through Friday. VThunder® is closed Saturday, Sunday and all legal holidays

Technical Assistance

Technical advice is available from any of the VThunder® sales personnel. For assistance call 1-800-967-1066, FAX us at 1-901-366-1807 or write to: VThunder® at COMP Cams® 3406 Democrat Road, Memphis, TN 38118. We can also be reached via the internet at

Sales Information

Warehouse Distributors must be able to maintain a representative stock of VThunder® camshafts, valve train components and other accessories for distribution of jobber accounts. In addition, an initial stocking order is required. Contact VThunder® for details.


Shipping is normally via UPS or FEDEX. Express air freight, airport-to-airport, bus, parcel post, air mail, etc. are possible methods when absolutely necessary or requested by the customer. Where possible, orders are shipped the same day. Large shipments to jobbers and warehouse will usually be made by truck upon mutual agreement between the customer and VThunder®


All orders to jobbers or warehouse distributors will be sent C.O.D. for cash or certified check, unless other arrangements have been made with VThunder®.

Damaged Merchandise

All shipments are fully insured; therefore, all claims must be made with the freight company. Do not return damaged merchandise to VThunder® unless prior arrangements have been made.

Returned Merchandise

Merchandise may be returned only if prior approval has been granted by VThunder®. All merchandise returned for credit must be returned in perfect condition. Merchandise will be inspected at time of receipt. It should be returned prepaid and insured and may be subject to a handling fee. Credit will be issued at lowest purchase price within the last 12 months.

Warranty Returns

All merchandise returned for warranty consideration, inspection, repair, regrind, etc. must be sent prepaid and insured. Included must be the sender’s name, address, phone number and an explanation of the problem as well as the work to be done. All merchandise returned must be accompanied by a written authorization number. To obtain and authorization number contact VThunder® at 1-800-967-1066.


All prices are subject to change without notice. Price lists are available from VThunder®. Except as noted, in this catalog, all products are not legal for sale or use on pollution-controlled vehicles.

Limited Warranty

VThunder® by COMP Cams® warrants that all of its product are free from defects in material, workmanship and against excessive wear for a period of 12 months from the date of purchase. This limited warranty shall apply for a period of one year from the date of purchase and shall cover only the original purchaser. This warranty is valid on camshafts only where new lifters and proper valve springs are used, such as those found in VThunder® kits. VThunder®’s obligation under this warranty is limited to the repair or replacement of its product. To make a warranty claim, the part must be returned within one year from the date of purchase to VThunder® by COMP Cams®, 3406 Democrat Road, Memphis, TN 38118, freight prepaid. Items covered under the warranty will be returned to you freight collect.

There is absolutely no warranty on the following:
  • Any parts used in racing applications.
  • Any product that has been physically altered, improperly installed or maintained
  • Any product used in improper applications, abused or not used in conjunction with proper parts

There are no implied warranties of merchantability or fitness for a particular purpose. There are no warranties which extend beyond the description on the face hereof. VThunder® will not be responsible for incidental and consequential damages, property damage or personal injury damages to the extent permitted by law. Implied warranties of merchantability and fitness are limited for a term of one year from the date of original purchase. Some states do not allow limitation on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so those limitations may not apply to you. This limited warranty gives you specific legal rights and you may have other legal rights which vary from state to state.

Please note: This catalog has been compiled to the best of our ability. We assume no liability for errors contained herein. It is the responsibility of the installer to ensure that the components are correct before installation. We assume no liability for any errors made in components selections or installations. VThunder® reserves the right to make necessary changes in products it manufactures and markets at any time to improve product performance.