Head gasket and precup question?

[Ratau]

The passenger side head gasket is gone on my 1982 Blazer. The heads got the 24-x 2mm screw thread injectors, casting # 14028901.
I also got 2 x 6.5 turbo heads casting # 10137577 and GM turbo manifolds.

If I want to put the 6.5 heads on which Fel Pro gasket must I use 6.2 # fel 8726PT or the 6.5 # fel 9701 PT?

Is there a difference between Fel Pro, Victor Reinz and Detroit gaskets? I could get Detroit here in South Africa, Fel Pro and Victor Reinz must be imported.

There is two sizes precups 42N and 58N in the heads that I got, could anyone give me info on the numbers and how to ID them.

[john8662]

You would be best using the 6.5L heads, especially because of the thread type of injectors. As far as the head gaskets use felpro and nothing else. When using the 6.5L heads you will need to use the 6.5L head gaskets, the block won't matter here. As far as which brand to use, the "Detroit" gaskets are no good and will fail, some good reading on head gaskets recently here:

Anybody ever used Corteco or Detroit head gaskets? UPDATE: Don't use Detroit Gaskets (http://forum.thedieselpage.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=2;t=003416)

Sorry, but I have no information on the precups used.