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Lawson Cox · 01-19-2012, 11:54 AM

i agree with Charlie. If you have the original heads on your engine you can tell pretty quickly. Domed pistons first came out with the LB engines. If you have an LB engine the heads should have a 48 part number prefix, Flat top pistons would have a 40 prefix.

01-19-2012, 11:54 AM	#14
Lawson Cox Senior Member Join Date: May 2010 Location: Above the gnat line in Georgia Posts: 7,009	Re: 36 ford i agree with Charlie. If you have the original heads on your engine you can tell pretty quickly. Domed pistons first came out with the LB engines. If you have an LB engine the heads should have a 48 part number prefix, Flat top pistons would have a 40 prefix.