The Ford Barn

crazy redneck · 01-04-2016, 08:21 PM

Happy New Year Guys! What do ya'll think about milling stock 8ba heads? What would the limmit be on a stock bore engine?

deuce_roadster · 01-04-2016, 09:24 PM

Depends on more then just the bore. Depending on the lift of the cam, you need to be careful you don't have the valves impacting the heads. On stockers, clearance of .050 is considered good. You need to check with foil balls or clay to know for sure what your clearance is.
Probably the cheapest mod you can make that gives good results.

crazy redneck · 01-04-2016, 10:13 PM

sorry,It has a stock cam.

39topless · 01-04-2016, 10:27 PM

Check with ol'Ron

Bassman/NZ · 01-04-2016, 10:46 PM

Deuce Roadster said it all. 50thou clearance over pistons and valves and measure all of them. You'll get good results from this mod. The quench area over the pistons may need to be reshaped to match the piston tops after milling.

Flatout · 01-06-2016, 08:35 PM

Sponsored Links (Register now to hide all advertisements)

Pick up a pair of EAB heads. Highest compression factory heads. Mill 'em a little.

Init1 · 01-11-2016, 07:07 PM

As with any 8BA iron heads make sure there is a substantial ridge under the thermostat housing and the head gasket surface indicating they have not been milled too much in the past. If there is no ridge don't use em.
Good ones should have about a 1/16" or so.

01-04-2016, 08:21 PM	#1
crazy redneck Junior Member Join Date: Dec 2015 Posts: 25	stock heads Happy New Year Guys! What do ya'll think about milling stock 8ba heads? What would the limmit be on a stock bore engine?

01-04-2016, 09:24 PM	#2
deuce_roadster Senior Member Join Date: Oct 2011 Location: Shelton, WA Posts: 3,800	Re: stock heads Depends on more then just the bore. Depending on the lift of the cam, you need to be careful you don't have the valves impacting the heads. On stockers, clearance of .050 is considered good. You need to check with foil balls or clay to know for sure what your clearance is. Probably the cheapest mod you can make that gives good results.

01-04-2016, 10:13 PM	#3
crazy redneck Junior Member Join Date: Dec 2015 Posts: 25	Re: stock heads sorry,It has a stock cam.

01-04-2016, 10:27 PM	#4
39topless Senior Member Join Date: Sep 2013 Posts: 1,027	Re: stock heads Check with ol'Ron

01-04-2016, 10:46 PM	#5
Bassman/NZ Senior Member Join Date: May 2010 Location: Napier, New Zealand Posts: 2,001	Re: stock heads Deuce Roadster said it all. 50thou clearance over pistons and valves and measure all of them. You'll get good results from this mod. The quench area over the pistons may need to be reshaped to match the piston tops after milling.

01-06-2016, 08:35 PM	#6
Flatout Senior Member Join Date: May 2010 Location: Damascus Oregon Posts: 160	Re: stock heads Sponsored Links (Register now to hide all advertisements) Pick up a pair of EAB heads. Highest compression factory heads. Mill 'em a little.

01-11-2016, 07:07 PM	#7
Init1 Senior Member Join Date: May 2010 Location: Oregon City, Oregon Posts: 208	Re: stock heads As with any 8BA iron heads make sure there is a substantial ridge under the thermostat housing and the head gasket surface indicating they have not been milled too much in the past. If there is no ridge don't use em. Good ones should have about a 1/16" or so.