Hello i have a 1951 Packard motor that when runs for a short time,the coolant slowly comes up over the rad.fill opening if i put the cap on it will over heat and boil out,when i turn the motor off the coolant poors out the top i find no water in the oil pan so i don't think it is a leak in the eng block
what would cause this to happen .Thanks in advance Frank

Thanks i should have stated it is a 327 Packard L-head motor that i have in running condition i measured the block it is the same just not sure if the front mounts will bolt to the 327,my 36 had a 288 [total rebuid on the 288 would cost big money]i guess i will have to take the balancer and timeing chain apart to see.The 36 trans.bolted right on.Agian thanks
for the info.

Hello new packard owner i picked up a 1936 packard 120 no motor would a 1952 motor fit if i used the 36 front motor mounts the 52 has the mounts on the side maybe some one did this,the head and block measure the same but i don't know if the block would be drilled to accept the 36 mounts thanks sunrise