new member, 250 questions

[myet1967]

Hello all! I am new to this site and I have some questions. I have an 81 gmc 1500 with an intergral head 250. I don't know much about gm I-6 engines. I have a rebuilt 250 with a non-intergral head. Will the intergral head interchange with the bottom end of the engine without the intergral head?? Any info would be a help! Todd

[Captkaos]

Yes, but you need the intake to go with it also.