[chuck]

I am going to look at a 302 engine tomorrow, ihear that there are roller engines and regular engines. How do i tell if it is a roller engine by looking at it , it is all apart and i do not want to buy a regular engine instead of a roller. Is there a difference in the blocks or are both the same just different cams.

[Twister]

the easiest way is the casting number, if it starts with an E5, it is a roller

[chuck]

Thank you
One more question, where are the casting numbers

[Twister]

if the starter is in, they are just above the starter

[Jarrett]

The roller blocks have XXX cast under the intake.... if the intake is off.

[JUSTNLX]

"If the intake is off", you will see two threaded holes in the lifter galley also.

[vbrpete]

Roller blocks can also have "YYY" in the middle.

The casting code will read E5AE,E5TE,E6AE,E7TE or E7AE.

The all-time easiest way,like he said, is to look at the two threaded bosses in the lifter valley.If the intake is on;is it a SEFI intake?If so,then look at the casting codes.If they are like I wrote above,then yes it's a roller block-not necessarily a roller engine,or an HO,but it's a proper block anyway.If you see an older code like EOAE,D5AE,etc.then it can't be a factory roller.