Fuel/Air screws
#11
Senior Member
RACING JUNKIE
Thread Starter
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,391
OK, I did not know having a primary PV meant that much jet size. I just assmed that going down that far on the carb I have could create too lean of a condition @ 72. The Secondaries are like in the 80's (maybe 84/86) & it is a blocked PV w/ jet extensions. See again, I have more of a drag carb than a street carb. The question is how to make it run most efficent on low/mid for street & be able to do minor tuning & run decent times on the weekends. It is frustrating when I am still learning too. It would be nice to have a drag car & street car!! God bless, Scooter
#13
Senior Member
RACING JUNKIE
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
If you have 86s in the rear the 76 you have would be close to being squared. I understood that you had 80s in the rear. Just remember the PV gives you 6 to 8 more jet sizes, in order to square the jets. Being a little lean on the street is good, mainly because your not going WOT that often. We usually jet down 2 sizes when racing 1/8 over 1/4 mile racing.
#14
Senior Member
RACING JUNKIE
Thread Starter
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,391
Copy that.
I forgot to mention that this car has a Dominator TeamG w/ a 4150 2" alumium riser as well which is angled/tilted to make the carb point down a little. I assume that everything should tune out the same as if it did not have the conversion/riser?? I assume this riser is for top-end??
Tod- I see there are 2 Quick Fuel 950's in my Summit book (both gas). One is about $100 more... I have the lesser expensive one (i think it was like $687 roughly. I forget the difference, but mine is stock that way w/ jet extensions & a secondary PV block. I like it for the extra adjustments (like the secondary butterfly) & the float windows etc....
I forgot to mention that this car has a Dominator TeamG w/ a 4150 2" alumium riser as well which is angled/tilted to make the carb point down a little. I assume that everything should tune out the same as if it did not have the conversion/riser?? I assume this riser is for top-end??
Tod- I see there are 2 Quick Fuel 950's in my Summit book (both gas). One is about $100 more... I have the lesser expensive one (i think it was like $687 roughly. I forget the difference, but mine is stock that way w/ jet extensions & a secondary PV block. I like it for the extra adjustments (like the secondary butterfly) & the float windows etc....