Engine Mods Outrageous Builds, High-Horsepower Modifications, strokers, and big cams for the Corvette
Sponsored by:
Sponsored by:

Engine Head Defect and Replacement

Old 06-25-2018, 12:18 PM
Junior Member
Thread Starter
Member Since: Jun 2018
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Engine Head Defect and Replacement

I own a 1988 stock Corvette which recently developed an engine problem that first appeared to be a blown head gasket. However, the head gasket was found to be ok. One of the heads had developed a small hole - possibly resulting from a casting error . Discussions with other Corvette owners concluded that this was unusual. The Corvette has 62K miles and for the last 10 years used for weekend driving. The engine never over heated and was properly maintained with new coolant. Casting marks on the two heads were : 3097 and 7273: 0088113 and 608. Does anyone know of a similar occurrence?

Replacement heads were obtained from Summit Racing at Arlington Texas. The first set of supplied heads were Trick Flow TFS-30310005 which are not compatible with a Tuned Port engine: 4 center intake bolt holes align for Vortex Ram design. The second set of supplied heads were Blue Point MLL-HP8103 and are not compatible due to downward angle of spark plug holes resulting in the plugs against exhaust. Finally, third time a charm, Edelbrock EDL-60870 heads were supplied and were compatible. My comments to BBB of Akron, OH summarize Summit Racing miscues. Anyone have a problem getting correct/compatible parts from Summit Racing or other Corvette suppliers?

natomas is offline  
Old 07-07-2018, 06:57 AM
CF Senior Member
Member Since: Oct 2004
Location: Valencia Ca.
Posts: 68,799
Received 1,223 Likes on 1,120 Posts
St. Jude Donor '05

could have been a replacement head for the 113. ZZ4 engines used the same thing....L98s almost all lose the head gasket between #7 , nature of the beast. A bypass line from rear to front would help solve the problem (not the heads fault)

There are a number of variants of Gen 1 sbc heads not hard to get it confused...which heads are drilled for what
If it were me Id have drilled your intake to work with the TFS but your edelbrocks will work fine.
Try to know more than the salesguy ( I know...) seems to be the way of the world these days.

Last edited by cuisinartvette; 09-02-2018 at 09:42 PM.
cuisinartvette is offline  

Thread Tools
Search this Thread
Quick Reply: Engine Head Defect and Replacement

Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: