Here's the block in my original June 67 289 engine. If I wasn't positive it was a 289, I would be fooled. The heads are marked as 289.
68 GT Vert - J Code (1st car I ever drove in '73, dad bought it in '71)
67 C Code Vert Sports Sprint (1st car I ever bought in '75)
06 Vista Blue with Pony Package (1st Mustang I ever bought new)
MCA #49294 Grayson, GA (Atlanta)
Keep in mind a lot can happen in 45 years or so. How many guys have built roller 302's into 347's? External casting codes don't tell that story. Pull the pan and look for the crank code (1U, 2U) if you really care. Don't see what difference it would make. The internals are the only thing specific to a 289 or 302, and they seem to be in place already.
Formerly of the Permanently Addicted...
Let it be known that I do not street race or condone that sort of thing
- unless the 'b@stard deserves it.
Someone takes his pants off and the rafters knock
Rock is dead they say
Long Live Rock!
67 conv. 289 4spd(mine), 67 coupe 289 Export(swmbo's)
Date codes are the best bet. 68 and up- 302. You can build a 289 from a 302 and vice versa, but make sure you use the correct push rods. I had a 302 block done as a 289 w/ 289 heads, but they used 302 rods- snapped 3 rocker arms before we found the problem! They are .13" longer! Unless you need a show dated engine ( like they're going to pull the starter to see date codes, the water pumps and castings on the housing just behind the pump will show the difference. Find a mexican 302 and build a hi-po!
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