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I'm a late addition to this thread and have no interest in arguing with any of you. My suggestion is revisit the power valve. You said it has a 4.5 or 5.5. I own a dyno and alot of the two barrel engines we've run on it pull over 5 inches of vacuum at the upper end of the rpm band. We use an 8.5 in our two barrell stuff. Want to know how we came to investigate and learn this interesting tidbit? A 4412 equipped street stock engine that burnt some pistons. That's all I've got to say about that.......
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If tuned and setup properly, the power valve can be used some what as a high speed lean out. BUT it has to be setup for this. Gas carb on friends street stuck uses a 3.5 or 4.5pvcan't remember off top of head. Get in touch with Dayton Umholtz at Kinetic Performance he can fix you up. This may not be possible with methanol.Josh K.Comment
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A friend of mine did a Mopar 360 with KB Hypers and set the ring gaps by instructions included with the pistons it ran about 2 laps in hot laps and self destructed upon tearing it down it had jerked the top off of a piston the culprit too tight ring gaps they called KB and they told them that the gaps were too tight they explained to KB that they set them to the specs listed on the instructions turns out my friends figured out the formula KB uses is wrong or the paper they got was. Where they had .21 on the 2nd ring it actually needed like .31 they figured out the top ring was basically gapless when motor got hot when and piston expanded again they set them per KB specs needless to say it was an expensive lesson If you want to get them fired up all you have to do is mention KB Hyper pistons and stand back and listen LOL.Comment
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