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  1. gm1236

    340 LA one piece pan gas gasket

    Look for pre ‘91 Dakota 318 pan gasket. Should have the same large radius seal as a 340. After ‘91 they all were small radius. But the corners are different than the LA pans.
  2. gm1236

    Intake manifold gaskets

    Dry fitting is great idea, usually the thick cork gaskets are too thick but there is too much gap for silicone. I use 1/8 gasket material and make my own for the ends. Seal them on both sides, trick is getting the manifold in the right place on the first try. That’s why they put the pins in...
  3. gm1236

    oil filter/ex manifold interference Q

    It’s a lot cheaper to drill the 4 holes, lol.
  4. gm1236

    oil filter/ex manifold interference Q

    Here are the filters I use, Purolator pure one PL10241 Wix 51348XP There is another one that is small diameter but long, may be for a VW. I don’t know the numbers. You can also cross reference these if you prefer another brand.
  5. gm1236

    oil filter/ex manifold interference Q

    There are several small diameter oil filters you can use. As long as the internal thread is the same and the seal is the right diameter they work fine. I ran a 340 in a drag car for years that way. I’ll get some filter numbers for you and post them. I never liked the sharp turns in the right...
  6. gm1236

    Name this intake…

    That is a late la tq or Qj intake, you can tell by the thermostat location. Probably from something 1980 and up. It will work, but you may need a different upper radiator hose.
  7. gm1236

    273 rocker push rods

    If you use the locking nut studs your going to have problems with them on a stock rocker. The top of the rocker where the stud goes through needs to be machined flat or the lock nuts will keep losing up. Crane studs with the Allen head is a good one to use if you go that route. If you want to...
  8. gm1236

    340 T/A (U code) head value? (Pics)

    I just sold a single “u” offset push rod hole t/a head for $300. I had it since 1990. A friend of mine has a machine shop and was rebuilding a t/a motor that had a cracked head. It was very clean, still had the original guides in it, looked like it had never been cut or had a valve job. The...
  9. gm1236

    My 340 bare block

    I would start with another block. Not having the original main caps can be an expensive problem. Those are some odd oil mods, there are plenty of blocks around, may cost $500 or more, but may be money well spent. Good luck with your project.
  10. gm1236

    Need New Headers for my ride.

    Put some shims between the motor mount and k frame bring the engine up 3/8” and put the tallest front tire on you can like 215/70. May gain an 1” or. so. Looks like you have a low profile tire on it now. Looks like a fun car.
  11. gm1236

    340 Rod questions

    If the rings are fairly new and the cylinders still have some x hatch in them you’ll be ok. But this looks like an old high mileage motor that already had a broken ring. In an old motor the cylinders wear and become out of shape, the rings wear into this same shape. Over time the rings lose...
  12. gm1236

    340 Rod questions

    If your going to replace any of the rings you’ll need to run a brush hone though it or you’ll have problems. Once you pull old pistons and rings out, they never seal right again. If it’s standard bore, brush hone and use the hasting rings. You should pull the crank, make sure the block is...
  13. gm1236

    Just Purchased Virgin 340 Short - What to do with Pistons

    Could be an early ‘72 motor.
  14. gm1236

    Just Purchased Virgin 340 Short - What to do with Pistons

    The factory pistons are probably the lightest ones you’ll find. If you can check the deck height, most of stock motors are way under. THe piston should be .040- .045 out of the block. Like ir3333 said the head cc is most likely 70-74 cc stock. This knocks the compression down quite a bit. I...
  15. gm1236

    Built 340 stored 22 years suggestions

    On #1 cylinder top dead center slot should line up with the 1st intake bolt on the driver side or #1 cylinder. Just like JDmopar said!
  16. gm1236

    Built 340 stored 22 years suggestions

    To get the drive out, I put two flat screwdrivers in the slot and with the handles next to each other so the shafts are touching, squeeze them together and twist them counter clockwise, I think, and the gear will drive itself right up and out. Make take a few tries to get it.
  17. gm1236

    360 oil pan

    If you have the clearance use a Dakota V8 pan. With the tubular k frame is the steering linkage moved from the stock spot?
  18. gm1236

    Lifter opinions

    What failed in the valve train that allowed the lifter to come out of the bore? It’s not usually a problem with the lifter. Make sure the wire clip is still in it that holds the puck in the top. Sometimes they break or the push rod knocks it out.
  19. gm1236

    273 banana groove rocker shafts

    I always run the grooves down, that’s where the load is. Everything is pushing up. I never paided much attention to the holes. With the notch on the left side of the head facing down the hole will be in the correct place.
  20. gm1236

    Mancini Stainless Steel roller rockers

    I’ve had good luck with Eagle parts, like you said some of the Chinese crap is good. That’s why I was asking. Thanks for the reply.
  21. gm1236

    Mancini Stainless Steel roller rockers

    I met Mike at Carlise few years ago, really sharp guy. I’ll check out his stuff. Thanks for the reply.
  22. gm1236

    Mancini Stainless Steel roller rockers

    Definitely the same set, thanks for the tip. Unfortunately they are out of stock. I’ll check back in a few weeks. I assume they are decent, Mancini doesn’t sell junk. From your reply it sounds like they are ok. Thanks for the reply.
  23. gm1236

    Mancini Stainless Steel roller rockers

    Any body using the Stainless roller rockers that Mancini sells. Are these any good or Chinese crap?
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