3400 Cylinder Head Casting Numbers

[Chris Ault]

Ok, I have done several searches, and I cannot find what it is that I am looking for. First of all, I have no idea what the casting numbers have to do with the fitment of the head. I have read that 3400 gen III heads are different based on the casting numbers. How do I find out which casting numbers will work for my setup (3.4-3400 top end swap). I already have the intake manifold and the injectors, I know that I need the fuel rails and pistons, but I need to know about the heads. Russell has been busy and has not had a chance to get back with me. Also, does anyone know what Russells alternator relocation bracket looks like. I have asked 3-4 times lol, and no one has been able to help me out. PLEASE HELP!!

[93camaro_zzz]

All I know, is that anything 3400 after 96 is fine. Some of the ones before that were like different exhaust ports, and supposedly flowed crappy. Heres a good link:

LINKY

[Josh_101]

I'd love to see a vid after these mods are done, just to see how much of improvement there is in speed.