Head Question

tanman722001 · Post by **tanman722001** » May 24, 2007, 2:16 pm

Hi Guys,Im going to need to do something to my heads on my 66 F350 with a 352.I have a really good set of 390 heads,That im going to put on it.Do I have to change anything?Which pushrods do I need to use?Is there anything else im not thinking of ?I know the 352 and 390 are the same family.Just want to check to make sure i wasnt forgetting something.Thanks Tony

Johnny Canuck · Post by **Johnny Canuck** » May 24, 2007, 2:29 pm

do you have the pushrods from the 390? I think either one would work, the block and heads are are the same family of engine, but the variations in the heads makes me say to use the pushrods out of that engine.

Uncle Skip · Post by **Uncle Skip** » May 24, 2007, 3:14 pm

What casting number is on the 390 heads?
In either case, make sure to have hardened seats put in for your unleaded gas.
U@ss

jakdad · Post by **jakdad** » May 24, 2007, 3:18 pm

Don't forget the oil restrictors while you have it down.

tanman722001 · Post by **tanman722001** » May 24, 2007, 3:23 pm

The 390 head was rebuilt about 2 years ago with harden seat.I have the complete 390 engine.I will try to get the cast number off them (where is it located)soon.What you mean the oil restrictors?Thanks for the input guys.Tony

Johnny Canuck · Post by **Johnny Canuck** » May 24, 2007, 3:32 pm

http://www.clubfte.com/users/ratsmoker/oilmods.html

jakdad · Post by **jakdad** » May 24, 2007, 3:38 pm

Here's a link to my album.
http://fordtruk.com/forums/album.php?user_id=77
Pics of my heads with location to put restrictors. The oil hole is 5/16" so I was able to use a 3/8" tap to thread it. I went to the hardware and got some 3/8" allen head screws. I drilled a 3/32" hole in the screws. You can use some Loctite on the threads if you like. It's not a process that requires precision machine work. If any of the guys are in your area, they could show you much better than I describe it. It will keep your valve covers from filling up with oil. Good luck.

tanman722001 · Post by **tanman722001** » May 24, 2007, 5:12 pm

The code I found on the heads are D2TEAA.I found this between the second and third sparkplug holes.Is this the right code?Does it mean anything?

Johnny Canuck · Post by **Johnny Canuck** » May 24, 2007, 5:13 pm

D2T=1972 truck

tanman722001 · Post by **tanman722001** » May 24, 2007, 8:01 pm

Is that good or bad?As far as the heads

Uncle Skip · Post by **Uncle Skip** » May 24, 2007, 8:24 pm

Yeah. Not so good. They're smog heads. You might be better off with the original 352 units if you'll put the seats in them.

tanman722001 · Post by **tanman722001** » May 24, 2007, 9:21 pm

If its 72 heads how can they be smog? What does that mean? They've already been rebuilt with new valves and valve seats.