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  1. JackpotJim

    440 vs 413

    You can buy forged Icon pistons for $575 in popular compression ratios, I have them in a 440 street motor and in my 512 race motor.
  2. JackpotJim

    1967 GTX 440 rear main leaking

    I finally solved a rear main seal leak in my 512 after close to 1 years of replacing seals and main seal caps. I found that with my Milodon 7 quart pan if I went by my aftermarket dip stick I had close to a quart too much oil in the pan. After changing oil I measured close to 8 quarts drained...
  3. JackpotJim

    Newbie with a 66 Coronet 500 with a 440

    Great looking Coronet, That car is a keeper. Looks like a great family project.
  4. JackpotJim

    4150 vs 4500 Indy single plane intake…pros and cons

    I have a similar 512 with 270’s, 11.5 to one, 1.6 rockers, 4200 stall converter and 4.10 rear gear. I run a Indy single plane 4500 base with max wedge runners and a ProSystem 1100 cfm Dominator. Drive it on the street in the warm months. No real issues driving my set up on the street.
  5. JackpotJim

    Intake fit issues Trick flow 270 to Indy single plane

    Indy had 4500 base, Max Wedge port single plane Low Deck manifolds in stock earlier this summer. Might be worth a call to see if they are still available. I also have a Trick Flow Track Heat 4150 base manifold that the runners have been opened up to fit 270's TF heads for Low Deck motor, I...
  6. JackpotJim

    Camshaft Break-in Help

    I broke in my Howards solid flat tappet cam last Spring by running it 3 10 minute intervals at 3000 rpm. Only additional precaution I took was breaking it in on just outer valve springs. After I had a couple hours of run time I installed the the inner springs that came on my Trick Flow 270's...
  7. JackpotJim

    Torque Converter Brands- good, not so good

    I have a FTI 9.5 SR Series Street-Strip converter behind my 512, it's advertised as a 3800 to 4000 stall but with my 512 it's closer to 4300 or 4400. The car sees limited use on the street but operates just fine and hits hard at the track while foot braking or using the trans-brake.
  8. JackpotJim

    470 Dyno Day Fun

    Impressive results! Congrats.
  9. JackpotJim

    130lb cylinder pressure

    Find a set of 75cc chamber Edelbrock E Street heads. In my opinion, they're just what a lower compression 440 needs.
  10. JackpotJim

    Intake manifold repair - chips!

    Don't use any 2 part epoxy without knowing it's heat tolerance, Most 2 part liquid base epoxies basically become goo above 400 degrees. The 2 part epoxy putties (in the tube) don't respond well to gas or oil, your high temp gasket sealer will take care of pits in the heads or manifold's...
  11. JackpotJim

    512 Stroker External Oil system question.

    I'm using a single line external oiling set up on my 512-400 stroker with a 21215 Milodon oil pump cover. In the Milodon single line kit that is back ordered from Milodon right now the 12an line is very short and runs in a straight line directly from oil pan to oil pump cover. Since I'm...
  12. JackpotJim

    Whats next?, 400Block

    I'm in the middle of a 400-512 build, went with a 440 Source kit, .035 over, 11.5 CR which I can raise or lower the CR with thinner or thicker head gasket. 270 TF heads, I have 2 cams and haven't decided which cam set up I'll go with yet. One is a Howard's solid with 260, 264 duration and about...
  13. JackpotJim

    1968 Coronet R/T 512 engine build

    Hang in there, Anyone that runs or owns a road bike knows you do your best thinking and problem solving on those long runs or rides. I'm sure things will work out.
  14. JackpotJim

    440 source 512 srreet engine

    I'm assembling a 440Source 512 low deck motor now. TF 270's, 11.5 to 1, going in my 66 Coronet. More of a Strip-street build.
  15. JackpotJim

    oil in valley pan, lots of it

    I'm using a 440 Source valley pan and during normal use the pan stays pretty clean but on Wednesday night racing after 5 or 6 runs I'll get some oil puddling on the pan. I believe it's pushing up from the lifter valley at the 4 corners. Not enough grey ATV.
  16. JackpotJim

    1970 440 aluminum cyl head recomendations

    I had a set of E Streets on a 383 in a 66 B Body, only spark plug that was tight was number 6. Mopar electronic distributor fit fine with the Edelbrock heads. No issues, Mine made good power to 5800 rpm.
  17. JackpotJim

    New Springs on Stealth Heads and Lifter Preload?

    Any chance you can take a photo of the adjustable rockers you are using? Most adjustable rockers require a cup end on the top of the pushrod.
  18. JackpotJim

    New Springs on Stealth Heads and Lifter Preload?

    Comp Cams sells a couple different type of hydraulic lifters. One type is built to rev a little higher (500-1000 rpm) and requires adjustable rockers. This type of lifter is not to have any pre-load, just zero lash. The regular Comp Cams hydraulic lifters can be installed with factory rockers...
  19. JackpotJim

    Main Caps for 512 "B" engine

    What RPM are you planning to spin the motor up to?
  20. JackpotJim

    727 Transmission question

    You will have to use a newer torque converter, Your 66 727 torque converter takes a 19 spline input shaft, 67 and newer 727 have 24 spline input shaft.
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