How to tell 289 from 302?

[CarFreakGT]

Hi, all. I'm new to classics, and hope that this isn't a silly question...What is the easiest way to find out if my engine is a 289 or 302?

 

[D.Hearne]

Only sure way to tell is pull the oil pan and check the crank casting numbers or pull a head and measure the stroke. The difference in displacement is due to the 302's .13" longer stroke. ( not enough to try using a dowel down the spark plug hole to measure) 289=4.00" bore x 2.87" stroke. 302= 4.00" bore x 3.00" stroke

 

[2nd Mustang]

Assuming it's all original, pull the valve covers and there should be a stamping on the head near the rockers that says 302.

 

[CarFreakGT]

Only sure way to tell is pull the oil pan and check the crank casting numbers or pull a head and measure the stroke.

Where will I find the casting # on the crank?

Would a 289 head also have something stamped on it?

Thanks!

 

[biggyfan1]

the 289 will say it also under the velve covers. mine did anyways.

 

[Dark Knight]

Block casting number helps too. It's on a pad down by the starter.

 

[Cobain03]

should say 289/302 on the side of the engine (forgot what side). says under the valve cover also i think

 

[danny clemens]

In 68 they used some 302 blocks and 289 cranks together.

 

[Dark Knight]

The stock 4v was the 302, 2v was the 289.. my original engine had a 302 block, but it was a 2v 289..

 

[zookeeper]

Same here, I've had two '68 289's and they both had 302 cast into the block in the lifter valley.

 

[badazz68stang]

i have a '68 289 with 302 stamped in the lifter galley, in 68 one of the ford plants ran out of 289 blocks so they used 302 blocks till the stock was replenished. if you want to kno what block you have then pull off the starter and there is a number stamped into the block. get the number and post it for decoding.

 

[D.Hearne]

Once again, the ONLY SURE way to tell what you've got is the crank casting #'s or measure the stroke. Crank casting numbers are on the 1st crank counterweight. 2M is a 302, 1M is a 289. Block & head numbers only tell you what engine those parts were on originally.

 

[BDT 1967]

I also might have been borred.