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  1. Rocky_JS

    273 pistons

    factory slugs what are the difference between the 2 and 4 bbl? It is hard to see in the cyl even with a bore scope, but what I can see is the piston direction notch and 2 valve notches and can not tell if it has a slight dome. Don't the 2-bbl pistons have 4 valve notches? I did search the...
  2. Rocky_JS

    340 rod bearing size?

    I pulled apart my 340 to freshen it up. The bearings are marked tm77 .001 "OS" - Clevite 77's obviously. The problem is when looking for new bearings for the engine everything I can find in a .001 states undersize? Am I reading this wrong, or can anyone help me out with this?
  3. Rocky_JS

    unknown camshaft

    I am pulling apart a 340 I removed the camshaft. I have searched for the numbers stamped on the back and cannot find any reference to what this cam is. the rear is stamped 111817 252238 251457 USA <-- this one I think I have figured out =)~
  4. Rocky_JS

    67 cuda 340 engine swap - thoughts

    I am getting ready to put the 340 in my cuda, but have come to a junction. Not a big deal but will require some thought. The engine is a 69 for a 70 model year the timing cover has left side timing marks and I have a new fluid balancer for the same. The 67 273 has the timing marks on the...
  5. Rocky_JS

    340 crankshaft info needed

    I picked up a fresh 340 engine as part of a deal. I am considering putting it in my 67 barracuda, but the crankshaft is for an Auto trans and I am running a 4spd and would like to keep it that way. What options do I have to accomplish this - special bushings and such? I have read that some...
  6. Rocky_JS

    1970 340 engine info

    I picked up a 340 engine to put in my 67 cuda. From what I can tell from the numbers on the pad on the lt front of engine. FW31 (340 weak stamping?) F=1970, W=Windsor 30270506. the first 4 numbers 3027 are the assy date? monday Nov 10 1969. the second 4 are engine build number? 0506. 506th...
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