Torque spec for Aluminium heads

[tmarvin]

I just bought a flathead short block from Bill Boomer out of Regina Saskatchewan./ This engine will be going in a 1949 meteor (ford) two door coach. The original motor that was cracked had aluminium heads and I want to put them on the new stroker. My concern is not the Torque order but the psi. These head are factory and a few American cars came with them I think they called them "Denver" heads or Canadian Heads. There is tons of information on the Cast Iron heads all over the net, but very little on the Aluminium heads.
Bill has suggested some specs but I always like to get as much information as I can before taking a run this project. any help is appreciated

 

[19Fordy]

Here's some good info.
http://www.fordbarn.com/forum/showthread.php?t=115788&highlight=aluminum+heads+torque

 

[WestCoast]

my book says 35 to 40 # torque for aluminum heads

 

[4tford]

Like I said Tom, 45 pounds torque.

 

[WestCoast]

what ever spec he uses, just make sure to use grade 8 washers or stainless under the head nuts, or bolts, you don't want them digging into the soft aluminum and galling, thus giving a false torque reading

 

[scooder]

Canadian heads and Denver heads arnt the same thing.
Use the proper hardened washers, regular stainless is too soft.
Martin.

 

[Ol' Ron]

Remember when torquing heads to do it after 3 heat cycles, #45 is more than enough.

 

[jimTN]

The original Canadian heads do not have as much metal in them as the repop cheater heads and will crack easily.

 

[tmarvin]

You are the best. and I did not doubt you for a moment, just enjoy the infor from other flathead buffs