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new 604 engines have a service bullitin right now pertaining to intake valves
the intake valve has an actual date lazered into the stem and certain dates are being recalled
the dates are 7-13; 8-13; 10-13
there is a serial number window that has been issued to narrow the search but we have found the specified valves outside the issued window as well so thats not an exact check
the only way to be sure is to pull the retainer from each intake valve and check the date----its a pain in the neck but not nearly as bad as dropping a valve
we pulled 12 engines apart yesterday + all of our in stock cylinder heads + all of our in stock individual valves
we found MOST to be in the recall status
we plan to check the remainder of our engine inventory before selling any to the public---recall staus engines are being sent back to GM for updated valves
dealers with old stock are your best bet for an engine if you need it soon-----BUT at least ask if the intake valves have been checked
we still recommend utilizing our "new engine checklist" for any new engine
the checklist can be found on our website at www.race-1.com then click the Q&A box on the left hand side----I think the check list is about #5 on the listed items
the checklist itself will be updated in the near future to include checking the date on the intake valve
Brad
the intake valve has an actual date lazered into the stem and certain dates are being recalled
the dates are 7-13; 8-13; 10-13
there is a serial number window that has been issued to narrow the search but we have found the specified valves outside the issued window as well so thats not an exact check
the only way to be sure is to pull the retainer from each intake valve and check the date----its a pain in the neck but not nearly as bad as dropping a valve
we pulled 12 engines apart yesterday + all of our in stock cylinder heads + all of our in stock individual valves
we found MOST to be in the recall status
we plan to check the remainder of our engine inventory before selling any to the public---recall staus engines are being sent back to GM for updated valves
dealers with old stock are your best bet for an engine if you need it soon-----BUT at least ask if the intake valves have been checked
we still recommend utilizing our "new engine checklist" for any new engine
the checklist can be found on our website at www.race-1.com then click the Q&A box on the left hand side----I think the check list is about #5 on the listed items
the checklist itself will be updated in the near future to include checking the date on the intake valve
Brad
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