any ideas?

Old 04-06-2012, 08:28 AM
  #11  
fast75vega
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Originally Posted by jmarksdragster
Yes.

should i go up one set at a time or jump up to like 73 frt/78 rear and see what happens :wink:
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Old 04-07-2012, 06:09 AM
  #12  
mopar1968
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What compression are you running :?: Camshaft lift and duration :?:
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Old 04-07-2012, 11:49 AM
  #13  
jmarksdragster
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You can try it a jet size at a time if you like, your MPH will tell you how much power you are making and where it wants to be for jetting.
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Old 06-07-2012, 06:04 AM
  #14  
fast75vega
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ok.... jegs had a full jet kit(69-99) on sale for $40.... and it just got here. im gonna go up two jet sizes in the front and three sizes in the rear and get the carb back together and bolted back on. im gonna start there and see what happens... i got all my time slips to compare it too

another question.... if it is running lean... could that be why the car runs a little hot and the temp rises really quickly from a cold motor?
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Old 06-07-2012, 08:45 AM
  #15  
wmeabates
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Put those jets in a cup with clean gas and shake them around.I've seen sum pretty dirty new jets.Bill.
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Old 06-07-2012, 09:47 AM
  #16  
fast75vega
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Originally Posted by wmeabates
Put those jets in a cup with clean gas and shake them around.I've seen sum pretty dirty new jets.Bill.
thanks bro :wink:
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Old 09-03-2012, 06:05 AM
  #17  
fast75vega
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Originally Posted by jmarksdragster
Go up on the jetting, that looks a bit lean for a 750. Go up until the MPH drops off, then back to where the MPH was best. It should end up close to around 72-74 in front with the PV and 79-81 in back.
you hit the nail on the head :wink: im at 74f and 78r now and 60'footers dropped to 1.51 with a 1 and my et dropped from 7.0's to 6.90 and my mph went from 93/94 to 99.80's.

then my motor blew up... but you can only spin a stock bottom end motor to 7k for so long... 3yrs was it.... but got more then my monies worth out of that lil budget build 383 motor ... now on to the 406 to finish the season
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Old 09-09-2012, 05:42 PM
  #18  
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Default here's a stupid question for the owner of the carb at hand

if your running a plugged pv in front with a heaver jet setting and a pv in back with a leaner setting,( i'm a fan of ) because fuel runs down hill persay! Did you rework your air bleeds to compensate for the fuel curve change in the holley 750 dbl pump just courious????? joeg 8)
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Old 09-10-2012, 07:58 PM
  #19  
fast75vega
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didnt touch the air bleeds. im running a pv in the front only.... never tried one in just the rear..... ?
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Old 09-11-2012, 06:35 PM
  #20  
joe2412
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what is you vac reading in gear ? for proper pv settings also if you have adj air bleeds you should be able to run pv's in both blocks at that point you can square the carb to achive a realy good tune and fuel curve by squaring the carb that way your idle gets richer to get your idle a little leaner just change the idle air bleeds to a larger bleed dia. good luck joeg 8)
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