How to tell if head has been milled?
#2
Originally Posted by mr2guru
Is there a measurement I can take of a LS1 head to check if it has been milled? i.e. Deck surface to valve cover gasket surface? If so anyone have the measurement offhand?
241 casting
Thanks
241 casting
Thanks
#6
height of LQ9 head
Originally Posted by GUNNAR@PATRIOT
If you measure at the end of the head, from valvecover rail to the deck of the head, the unmilled measurement should be 4.750"
Can you tell me what the height of an LQ9 head is? I'm trying to determine how much I can mill to achieve a compression ration of 10.5:1 or so on an LS1 block with a 224/224-114 cam without piston to valve problems. Thanks for your help.