For Sale: Pair of LT1 heads. These are the early 10207643 castings that are better for porting. They were redone by Wayne Calvert of Dallas. Work included:

* 5 angle valve job
* milled
* new seals
* new LT4 springs
* assembled

After milling, the combustion chambers were measured to be 52 cc. Stock LT1 heads are 54 cc. With stock pistons, this will put the compression ratio around 11.0-11.2:1, depending on your head gasket choice. The LT4 springs are good to .525" of lift. These are 100% ready to bolt on and go. I have a receipt from Wayne Calvert Engines for $419 worth of work to these heads.

$450 OBO

These are currently located in College Station, TX. I would like to try and sell them local, if possible. I can ship them, but the buyer is responsible for shipping costs.

 

I thought the stock LT1 combustion chamber was 58cc? My heads were milled and they are now 54cc.

 

According to this site http://www.grandsportregistry.com/lt1vslt4.htm, the LT1's are 54 and the LT4's are 54.4.

Regardless, these have been milled twice, and the chambers were measured at 52cc.