Topic: What to do with this engine

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  • STREETRACER’s Profile Photo
    STREETRACER
    • Join Date: May 16, 2007 at 3:19 pm
    • Total posts: 11
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    #11
    Jan 30, 2009 at 11:17 pm
    I HATE TO SAY BUT i think monzter is right about that kind of idea. for me as my self in my chevy camaro i might would just rebuilt it, it could be something else went wrong like camshaft, pistions etc. in motor is not right size to fit. thumbsup image

     

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  • MonzterRacing’s Profile Photo
    MonzterRacing
    #12
    Feb 20, 2009 at 6:11 am
    Well I proved my theory on Demon carbs on Steve's 355 at the dyno. It picked up the HP quite a bit and he was so convinced he bought one for his motor. I used the one off my Green Monza which was an 850 cfm Mighty Demon with annular discharge nozzles. I did not change any jetting from pulling it off my car but I did put the rest of the parts back to the way I received it when I bought it new. Like I said it helped Steve's motor a lot with a pick up of something like 17 HP just by bolting it on. No jet changes were made or tuning with it either. He originally was using a Quick Fuel Technologies 750 cfm carb that was around $750 with all the air bleeds etc... We did try to tune his carb in but it was not liking it at all. My carb was something like $549.

    LIke I said if you want I can run my program to see what it does. Just an idea !!

     

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  • FlashBack’s Profile Photo
    FlashBack
    • Join Date: Sep 20, 2007 at 10:26 pm
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    #13
    Mar 3, 2009 at 9:02 am
    Quote:
    Originally posted by str8racn  I bought a 1970 Camaro Z28 with the original engine and the guy did not take care of it at all. I think the carburetor he has on it was too big. Engine is a small block 350 with stock heads. Carburetor is a Holley 4150 750 CFM. I really need some direction. I want a strong day to day drive and goo times at the track.



    I wouldn't think that a 750 would be too big of a carb on this setup. I would recommend putting a kit in the car (Quick Fuel Technology wink image ) and upping that powervalve to an 8.5 or even a 10.5 depending on your camshaft. After checking vacum reading at idle with the car in gear of course to be sure. You'll find that choosing a PV with a reading of about 1.5 lower than the vacum your pulling is best. Say you have 12" at idel/in gear...a 10.5 would be the way to go.
    Gene

     

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  • MonzterRacing’s Profile Photo
    MonzterRacing
    #14
    Apr 26, 2009 at 2:49 pm
    That's not too bad an idea either Gene. I apaprove of that as well.

     

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    Mark Francis @ Monzter Racing Happiness is the smell of 116 octane race fuel with raspberry additive.