Got a ? about the saginaw 3 speed that i tore out of my 76 GMC shortbed , the truck had an inline-6 backed by this saginaw 3 speed that has a 3.11 first gear ratio in it. But im replaceing the inline-6 with a miled 350 sbc with around 340 to 350 hp, and around 380 to 400 lb of torque, and would like to know if the saginaw 3 speed will hold up to the task? or would i be better off with a HT350 automatic to go with the 3.42 gear's that's in the rearend? A 700R4 tranny's not with in my budgit at this time, but a HT350 with a small stall i can do. (Please Advise)