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  1. EL5DEMON340

    Trunk light location

    Anyone have an original trunk light in a 71 demon or duster? Can I get a measurement or approximate location of where the bulb sat. Thanks
  2. EL5DEMON340

    Recognize the Demon after 51 years !!

    I’m working on my Demon in the garage when I see an older guy (72yo) drive by my open garage slowly looking in. Then I see him turn around at the end of the block making his way back, and park in front of my drive. Great I think …. He gets out and says nice duster… ahh it’s not a duster it’s a...
  3. EL5DEMON340

    Ralley dash with aftermarket tach question

    I would like to remove my non functioning factory tach on my 71 demon and replace it with a high quality aftermarket tach that will work with my MSD. I drive the car hard so accuracy is important. Any suggestions on brand, size, fitment? Pics would be greatly appreciate. Thanks
  4. EL5DEMON340

    Will S/W gauges work with stock sending units?

    Like the title asks, will an electric Stewart-Warner gauge oil and temp work with the stock mopar sending unit? Thanks
  5. EL5DEMON340

    Someone needs to start re-casting 340 blocks

    I’ve got a 71 340 unstamped warranty block, and a 73 340, both standard. If I sell they wouldn’t be cheap.
  6. EL5DEMON340

    [FOR SALE] KB-191 piston

    NOS. has pin and locks, $75 shipped OBO, only have this one piston.
  7. EL5DEMON340

    Cylinder head milling

    Yep, not really worth milling stock sb mopar open chamber heads more than about .030 max. Even NA.. This is just my opinion of course…
  8. EL5DEMON340

    Cylinder head milling

    Nope, this is what I have heard from guys going really fast with stock parts .
  9. EL5DEMON340

    Cylinder head milling

    i wouldn't go to far milling the open chamber X or J heads, i hear if you don't have at least .100 between the "quench" area and the piston if effects the flame travel..
  10. EL5DEMON340

    Low peak oil pressure

    20 psi at hot idle is fine
  11. EL5DEMON340

    How much HP...again

    Probably around 425 hp without knowing compression and head flow numbers. IF you built the car correctly then you put a higher stall converter in if it’s an auto, AND a performance oriented gear ratio which would allow you to use a 750/800/or even a 950hp carb for even more horsepower and the...
  12. EL5DEMON340

    650 or 750 Edelbrock on 340

    Heavily worked 71 manifold
  13. EL5DEMON340

    650 or 750 Edelbrock on 340

    Factory underrated all 340’s at 275hp the 4 speed cam, the t-quad with the better intake in 71, AVS 340’s around 300hp, 71 340’s closer to 315 and 6 pack a little more. NHRA pegged the actual HP back in the day. 340’s and Hemis were underrated, 383, 440, and 440 + 6 were a lot closer.
  14. EL5DEMON340

    650 or 750 Edelbrock on 340

    And the 71 340 with the 800 cfm t-quad makes more HP than the 625 AVS, OH…. and the 340’s with the 1350 cfm Holley 6 pack ( 950 actual cfm) make even a little more !!
  15. EL5DEMON340

    650 or 750 Edelbrock on 340

    I’m going to make you an offer you can’t refuse.. Swing by and pick up my 750 Holley competition #0-937 9 dp with annular boosters and choke horn milled. You can try it out this summer.
  16. EL5DEMON340

    J head porting

    Yes. I’m going to shot for about 89% of the seat width.
  17. EL5DEMON340

    J head porting

    Well I think this is about done!! I’m running a 6 pack intake so if I can get these to go near 240cfm at 500/550 lift with a 2.02 valve I’ll be happy. Now to start the other 7 cyl.
  18. EL5DEMON340

    Bypass regulator expert?

    I have a dead head now but purchased a bypass
  19. EL5DEMON340

    Bypass regulator expert?

    Do bypass regulators bleed off fuel pressure when the engine and electric pump is off? Reason I ask is I have a heat soak restart issue and I know it will help cool fuel make it to the carb if it’s plumbed after the carb but if it doesn’t release pressure in the line at shut down i may be...
  20. EL5DEMON340

    J head porting

    Yep, I’d have a pair of those rectangle chunks of aluminum on my motor especially if I wasn’t going for stock appearing !
  21. EL5DEMON340

    J head porting

    A little closer, man is this labor intensive.
  22. EL5DEMON340

    J head porting

    Got rid of the guide tail. Still a little work to do narrowing down the guide.
  23. EL5DEMON340

    J head porting

    still plugging away, the chambers are done, hand deshroud, intake guides milled down about .200, exhaust about .030. Exhaust bowl blended, still need to work around the guide boss and profile the roof hump. How much can I knock down the hump?? I’m thinking only around .010 to .020 after knocking...
  24. EL5DEMON340

    J head porting

    That T-quad and manifold is a big advantage, but you know that I’m sure.
  25. EL5DEMON340

    J head porting

    Yes I’m interested in flo also.
  26. EL5DEMON340

    J head porting

    Hi Pat, yes I will, but that area is usually the lowest on the list. Most of the flow gains on these heads as I understand it are guide, bowl, and chamber along with a good valve job. These are still at 1.88 so I’m going to ruff everything in then send to machine shop to cut 2.02 size, then...
  27. EL5DEMON340

    J head porting

    As usual a year later back to work !!! All guides have been cut down about .200”, the fel-pro 1008 gasket is close so not a whole lot to de-shroud mostly the slope towards the plug side . I also softened the divot around the spark plug.
  28. EL5DEMON340

    compression or flow?

    Nice lope, when I had a 4bbl 850 it was happy at. Now with a mechanical 6 pack 1,000 seems better
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