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  1. PRHeads

    How to destroy a 440

    I’d say the use of what are probably 50+ year old rockers and shafts on a freshly built HP 440 combo was obviously a bad call. The pic of the spacer in the wrong location in the pic in post #49 is evidence the assembler wasn’t very detail oriented and/or not very familiar with Mopar big blocks...
  2. PRHeads

    How to destroy a 440

    Not that it really matters at this point, especially since it will be getting new heads……. But, my take on whether or not they are Stealth heads(based on the currently posted pics)…… If you look at the end of the head in this pic, you can see the bosses for the alternator mount, like what...
  3. PRHeads

    Isky ductile iron rockers

    Here are mine……. Narrowed to Crane width…….. and lightened a bit. I couldn’t see the point in that big knob way out at the valve tip.
  4. PRHeads

    Isky ductile iron rockers

    I actually got a set of the reboxed Cranes…….that had “Crane” cast into them.
  5. PRHeads

    small block la 68 misurament valve seats

    I’m not sure what’s the norm over there, but here the seats are typically made with the correct press fit, when using a “standard” cutter. In other words, an SBI brand 1.687 seat would measure 1.6925. Which would give .0055 press if the hole was cut with a 1.687” cutter.
  6. PRHeads

    Isky ductile iron rockers

    I modified the rockers. Machined them down to be the same width as the Cranes. Either way will get the job done.
  7. PRHeads

    440 valve train question

    Exactly. As long as the pushrods and lifters are correct for each other, you’re good.
  8. PRHeads

    O2 sensor placement

    Yes. Make sure the gasket for the extension is good.
  9. PRHeads

    O2 sensor placement

    I would think any air pulled into the exhaust from the pan-evac would affect the readings. My experience with pan-evac systems and exhaust systems is they don’t play well together. If the O2 is fairly close to the open end of the pipe, the readings at less than WOT won’t be super...
  10. PRHeads

    The Imperial went out for a test

    Was that car set up as a Stocker? Is it still?
  11. PRHeads

    Oil passage restrictors

    No mention of which block is being used. The World/Mopar blocks, as well as the BME blocks don’t oil the top end thru the camshaft. Those blocks have full time top end oiling. I believe the Indy Hemi block is the same. If using one of those blocks, restrictors are highly recommended.
  12. PRHeads

    One 383 cylinder head to be machined and gone through

    Yeowza!! I’d love to see how the itemized bill works out on that one.
  13. PRHeads

    One 383 cylinder head to be machined and gone through

    For a basically stock 383, I’d just use Fel-Pro 8519pt-1 head gaskets. What was the bill for doing the one head?
  14. PRHeads

    Cam

    The P4452783 is the 4bbl cam. 1 bolt timing gear. P4529270 has the same exact specs, but uses a 3 bolt timing gear…….like the factory did with a 6bbl.
  15. PRHeads

    OIL SLINGER

    Like I said, that was a good find, and something I’ll keep in mind on future builds. Good little tidbit of info.:thumbsup:
  16. PRHeads

    OIL SLINGER

    I understood the “cause and affect” of your situation. I was just reminiscing about how when you’re building an engine from a bunch of parts the come from different manufacturers……….. sometimes even the basic stuff can cause assembly problems. Like your damper and the slinger. If you really...
  17. PRHeads

    OIL SLINGER

    My first experience with the slinger causing issues was found when freshening a very nice, pretty high dollar build(that the owner had assembled himself originally). As it turned out the the damper/slinger/lower gear/crank/timing cover all needed some attention. The engine had a Callies crank...
  18. PRHeads

    OIL SLINGER

    I have seen that type of wear pattern before, but not in person. Good catch!! I’ve seen it with some with aftermarket cranks that the diameter of the snout, where the gear rides, is extended out past the gear enough that it interferes with the slinger being able to fit up flush against the...
  19. PRHeads

    Got the 572 back, Now lets find some power

    Well, you should have plenty of time now:thumbsup:
  20. PRHeads

    Got the 572 back, Now lets find some power

    I guess I should have been clearer…….. I was asking 2quick if he got signed up for DW…….since that’s what his build was intended for.
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