any ideas?
#14
Senior Member
RACING JUNKIE
Thread Starter
Join Date: Nov 2008
Location: Niagara Falls, NY
Posts: 965
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?
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?
#17
Senior Member
RACING JUNKIE
Thread Starter
Join Date: Nov 2008
Location: Niagara Falls, NY
Posts: 965
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.
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
#18
Junior Member
JOURNEYMAN
Join Date: Sep 2005
Posts: 26
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)
#20
Junior Member
JOURNEYMAN
Join Date: Sep 2005
Posts: 26
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)