312 and 902 heads...what's the difference??? - Moparts Forums

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312 and 902 heads...what's the difference??? #1415073 04/06/13 01:57 AM 04/06/13 01:57 AM
Joined: Dec 2011 Posts: 120 Vancouver,Canada 7 70 Roadrunner* OP member
70 Roadrunner* OP member 7 Joined: Dec 2011 Posts: 120 Vancouver,Canada	Guys I'm wondering how similar 312 heads are compared to 902 heads and can they be run on the same engine? The 312 on one side and the 902 on the other?Identically prepped springs/valves...etc. Maybe someone can help me out...thanks Dave

Re: 312 and 902 heads...what's the difference??? [Re: 70 Roadrunner*] #1415074 04/06/13 10:10 AM 04/06/13 10:10 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	312?? never heard of it? http://www.mymopar.com/headcastnumb.htm numbers http://www.moparmusclemagazine.com/techarticles/5115_cylinder_heads/viewall.html You should pick one place or another to ask questions here not two but oh well! A gave same answer in questions and answers!

Re: 312 and 902 heads...what's the difference??? [Re: Dodgem] #1415075 04/06/13 10:50 AM 04/06/13 10:50 AM
Joined: Dec 2011 Posts: 120 Vancouver,Canada 7 70 Roadrunner* OP member
70 Roadrunner* OP member 7 Joined: Dec 2011 Posts: 120 Vancouver,Canada	I'm bloody dyslexic...the one head is 3751213...I'll only post in one section from now on...lesson learned

Re: 312 and 902 heads...what's the difference??? [Re: 70 Roadrunner*] #1415076 04/06/13 12:24 PM 04/06/13 12:24 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	the motor will not know vertually the same. I once unknowingly had a pair of 906 heads with .030 more milled off one then the other and could not tell. when I found it a couple years later milled .050 of one and .020 off the other to make them even!

Re: 312 and 902 heads...what's the difference??? [Re: Dodgem] #1415077 04/08/13 03:56 AM 04/08/13 03:56 AM
Joined: Dec 2011 Posts: 120 Vancouver,Canada 7 70 Roadrunner* OP member
70 Roadrunner* OP member 7 Joined: Dec 2011 Posts: 120 Vancouver,Canada	Dodgem thanks for the reply...I was hoping for some good news.I've made my share of mistakes on this project so far but these two heads should work fine.Very much appreciated... Dave

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