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  1. AFR assembly

    Engine Tech
    Jim, The reason I am asked is we have no idea what work was done to this block before and what rotating assembly you have. The block could have been at 10.270" deck height before, and after you had shaved off 0.015", it is now at 10.255", and that may be causing the problem you are seeing. We...
  2. AFR assembly

    Engine Tech
    What is your deck height measurement on all 4 corners? While you stated 0.015” was removed, that does not mean the deck is level, square, or at 10.300”. Dave
  3. All Cast Iron Street Performance Build

    Engine Tech
    IMHO, While this is not cheap, if you wanted "all cast iron" bragging rights: Send your heads and intake to Scotty for port work. Locate a set of PI exhaust manifolds and send to Scott for work on. Have Scotty get a carb from Bobby for your application Have Scotty spec out a cam, ignition...
  4. Head Advice

    Engine Tech
    Lower compression, more boost??? Lol Dave
  5. Head Advice

    Engine Tech
    IMHO, you would be better off selling the Blue Thunder heads and picking up a set of AFR heads. You can make your horsepower figure with less cam and compression. Blower guys like those Blue Thunder 100cc heads. Dave
  6. Removing valve stem seals

    Engine Tech
    I would just get my acetylene/oxygen torch and get the valve ends cherry red. If you flip over the head, the valve seals just fall off. No need for that expensive Snap-On tool. Just git er done. >:) Dave
  7. Comp Cams Magnum Roller tip Rocker failure

    Engine Tech
    While you do you have oil pressure, did you verify that oil is getting to the rocker arms via the pushrods? It is best to have the valve covers off, and a drill hooked up to the oil pump to see if oil is getting to the rocker arms that way. The rocker arms being blued is making it look like...
  8. Squirter size

    Engine Tech
    There are way too many variables to say a certain size is going to work for your application. If you have a Holley double pumper, and if you have the money, I would suggest that you send your carburetor out to have it tuned for your application. You will think you have another engine under...
  9. Speedmaster 8 stack HELP

    Engine Tech
    Can you post a picture to show how much interference you're getting? There are smaller diameter distributors out there, but we need to see how much the fuel rail is into the distributor. That is one of the issues with Procomp/Speedmaster. Poorly executed designs. Dave
  10. Turbo sizing for a bone stock 90' 460

    Engine Tech
    Mustang70, You seem to have this all figured out, so I would just go ahead and go with those eBay turbos. At $100+ each, you're not going to be losing too much if everything goes south. Build it as cheap as you can, and then you can report back to us how long it lasts, especially towing...
  11. 460 AFR Headed HP and Torque

    Engine Tech
    Scott (The Mad Porter), I came up with a combo, and I wanted to get your input on it (and yes, I did a copy and paste of one of your builds and modify the items):grin:: 2 bolt D0VE block bored and deck plate honed. Main line honed. Stock 3.85" crank, internal balance Smaller main and rod...
  12. At a loss with these idling issues!

    Engine Tech
    If I am reading this correctly, you have a big cam in a 429. You are trying to get it to idle below 1000 rpm. Why? There is nothing wrong having it idle 1000-1200 rpm with a big cam. If you want it to idle at 700 rpm, put in a smaller cam. Just because someone else can get their engine...
  13. opposite of overheating problem.

    Engine Tech
    I forgot to add, check your temp gauge and sender to make sure it is reading accurately. Dave
  14. opposite of overheating problem.

    Engine Tech
    The bypass is for when an idiot revs his engine up before the thermostat fully opens. Im assuming you get your engine to operating temp before beating on it. I would not hesitate to put a 180 on it and drill one 1/8" hole in it. Make sure you get a quality themostat, and test it before...
  15. 557" AFR 300's Street build 750+ HP @ 6,100

    Engine Tech
    Scott, If you where to compare the off-idle torque and throttle response in comparison to a 460 with stock ported heads, Performer intake, 750 Holley, headers, 10 to 1 compression and a [email protected] cam, would this build with a single plane intake have equal or better performance down at the...
  16. 557" AFR 300's Street build 750+ HP @ 6,100

    Engine Tech
    Scott, What is the redline of the engine with this valvetrain set-up before you see valve floating? It is good to finally see published dyno results. Dave
  17. Increasing compression...

    Engine Tech
    IMHO, get a set of budget ported early casting heads with the smaller chambers from Scott, reincarnation-automotive.com. You'll get your increased compression plus the addtional power from a correct port job. Get a cam, distributor, and carb from him as well, and you'll have the power you are...
  18. Exhaust manifold differences

    Engine Tech
    Sounds like it it time to route everything correctly. I would get the headers ceramic coated. Wrapping them just destroys them. Dave
  19. Exhaust manifold differences

    Engine Tech
    If you don't mind me asking, if you went thru the pain of getting the headers to work, why remove them now? You are talking about losing a lot of power goong back to manifolds. Is there something going on with the headers? Dave
  20. Pulling Truck Engine Cam Question

    Engine Tech
    Bret Powell at PFC makes some of the best CJ headed motors around. IMHO, you should have him spec a camshaft since he rubbed on your heads. That being said, as others have pointed out, your carb can have a large influence on how the motor is running too. Just because the carb worked before...
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