Quote:

---

Still waiting for an answer on my square-jetted using a power valve question! ANYONE EVER SEE OR HEAR OF THIS BEING DONE??? Thanks! RandyB

---

As your intuition is telling you...it is unusual. I've never seen it without something else being wrong. You can most likely rule-out a weaker 'signal' in the front half of the engine. Is the P/V sized correctly? Is it ruptured? If you want additional advise/views start a new post topic. I can only speak for myself but, I'll only read thru a post once even if I reply I rarely look for a reply to my reply...Because I don't reply often, LOL. I'm not sure but, it almost seemed like you were trying to use a similair # jet in a different carb? If that's the case then don't IMO. For me, at the track sometimes you just give it what it wants and ask Q's later. Hoodscoops can cause jetting issues that won't show up on a chassis dyno. Hopefully within the next 2 weeks Dartin' will be running and we'll all hang-out at the track to tune.

Quote:

---

Still waiting for an answer on my square-jetted using a power valve question! ANYONE EVER SEE OR HEAR OF THIS BEING DONE??? Thanks! RandyB

---

I would say that`s not common and after chasing my tail for years and wearing out jet threads, the chassis dyno is the way to go+ have you messed w/bleeds yet. Have you opened the carb up to see if anything`s funky inside?

Quote:

---

Thanks,Sean! The PV I'm running is a 4.5. My vacuum is 6" at idle,in gear. RandyB

---

Tells me that the PV circuit is too small so you need
the added jet size to cover it up.... the carb has
been opened many times but I never measured the PV
holes... the carb was set on the dyno to the numbers
it has now
EDIT
I actually said it backwards the PV circuit is too
big... it might have a high flow PV and it could
use a standard... being that carb is old

Quote:

---

I think some of you mis-read which carb has the power valve! NOT THE DOMINATOR! The 850 that the car was dynoed with. I think I might just square-jet the 850 also. Maybe start out with 86 squared,and go from there! Thanks guys! RandyB

---

Randy... why mess with it... it was on the dyno and
it works on your car... if its not broke dont fix it