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  1. SpeedThrills

    Tube or no Tube

    That's a good idea. However, don't slicks require a stronger, made for slicks tube? I never ran tubes, but kinda remember the tubes being special and expensive. The lawn tractor tubes I've used were cheap, Chinese POS. Maybe there's something better?
  2. SpeedThrills

    Tube or no Tube

    Tubeless can be a pita keeping air in them. But, I run tubeless because I'm a weight reduction junkie.
  3. SpeedThrills

    Vacuum?

    I haven't tried one of these yet, but it sounds interesting. M/E Wagner Performance Products – High Performance Crankcase Ventilation Systems
  4. SpeedThrills

    How much gain with lower gears?

    These questions come up frequently because the way to make a car faster is: 1) Buy speed part. 2) Install, test. 3) Remove speed part after disappointing test. 4) Put part on shelf. 5) Repeat until success is achieved.
  5. SpeedThrills

    Which Carb Gives a Balance of Power & MPG?

    There's a lot of stock eliminator cars running really fast with Thermoquads. Doesn't address the mpg aspect, just my .02
  6. SpeedThrills

    Any small tips to help ET?

    The tallest front tires that you can fit will cheat the beams. You'll have to adjust your light, as a taller tire will slow your rt.
  7. SpeedThrills

    Purple Cam Design Question

    Your combo is very close to what mine will be. I was hoping for very low 12's. Sounds like I should be ok. I'm hoping that the future brings me a 10 second 408. I'll have to save my nickels and dimes...
  8. SpeedThrills

    Purple Cam Design Question

    I kinda thought it was about ramps, area under the curve, and all that. Newer cams having more lift because of better heads being more prevalent makes sense, too. Getting a better idle sounds good, too. I bought this 360 not knowing what was in it. It idled at 1200 or so, and had 7" of...
  9. SpeedThrills

    Purple Cam Design Question

    When Mopar designed the Purple cams, did they take advantage of the larger diameter lifters? I've read on here that they are an out of date design. What makes them old? I have a 292-509 that was in the 360 I bought and plan on using it until I build a 408.
  10. SpeedThrills

    Open exhaust Hp gain?

    "It was running a little rich corked up,so i was hoping dropping the exhaust would show some gains." -End quote. You said you're expecting better air next time out.- That, and dropping the exhaust may take care of that richness without rejetting.
  11. SpeedThrills

    Open exhaust Hp gain?

    I'm thinking that every combo is different. Take collector extensions, and maybe some bigger jets. Try to baseline w/ exhaust, then open it, using 18" extensions. If 100 lbs. is a tenth, that weight has to be worth 5 hundreths.
  12. SpeedThrills

    Stock Refurbished Rods VS Scat I Beam

    Not to hijack, and please don't take this the wrong way, but I'm wondering; Do you think maybe you did more damage with the neutral slam, and running the engine again, than you would have by simply winching the car onto the truck? Cars are winched onto trucks zillions of times every day. Maybe...
  13. SpeedThrills

    any one useing msd box with a vacuum advance

    Ya gotta use them "biggin's" before they dry-rot! Get a good number outta that fish!
  14. SpeedThrills

    Another 75hp please

    In post #26, your reasons for not changing the trans and/or rear ratio are explained so I can appreciate your requirements. I believe that's all that was being asked of you in some posts. A thought: Sometimes engine modifications change the power curve and require a rear gear ratio change...
  15. SpeedThrills

    273 heads for stock eliminator

    The type of shop that perfacar mentioned, in addition to doing the work, should also tell you which heads are best. They might not even prep a set they don't recommend. A good 273 racer could tell you, too. They'll be anything but stock when they get done! Save your $$$$! Reminds me of a...
  16. SpeedThrills

    finally ran the car at the track

    Just something to consider: There is the possibility that the car has more MPH capability. What I mean is, if the 13.0 is a good e.t. for 102 mph, you can be fooled into thinking all's well. If there's a fuel delivery problem or valve float, etc., maybe it should have gone 105 mph, if all was...
  17. SpeedThrills

    Best ET

    Nice. Stock Eliminator car? Somebody once asked my buddy while we were at the track, "What's your best time"? He said, "Night time". Mine would be 11.60's @ 116 in a 71 6pk RR. Current project's a 360 stroker in 74 Dart Sport. Shooting for high 10's.
  18. SpeedThrills

    More power from my 360 Duster?

    Nice car. To break the damper bolt loose: Carefully put a breaker bar on the bolt and rest it on the driver's side frame rail. Tap the starter (ignition disabled!) Bolt will loosen. To torque it on: Wedge a piece of wood in the ring gear. There's a will, there's a way! Be careful. Is...
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