Ok, i need to know how to tell a 350TPI from a 305TPI by just lookin at it. i need to know by this weekend so i dont get taken. please help me, he did a 305 to 350 swap and i need to know if it's the truth, without tearing things apart, thanks alot guys

 

look up the casting numbers located on the back of the motor on the drivers side. there is also a head casting number under the valve cover in-between the rockers.