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Powervalve? #737856 07/01/10 09:18 AM 07/01/10 09:18 AM
Joined: Aug 2005 Posts: 163 DES MOINES IOWA P PARTSMAN440 OP member
PARTSMAN440 OP member P Joined: Aug 2005 Posts: 163 DES MOINES IOWA	Never ran a holley carb before and need some input. My buddie tell me to take out the powervalve because race cars dont need them. I bought carb new, it has 76 jets in the primarys with a 45 powervalve and 84 jet in the sec. with no powervalve. he says to take uot the 76 out of the primarys and put in 82s and tune from there. My junk is a 65 valiant 2900lbs, backhalfed and tubbed, 30 over 440 with ported 906 heads and a 590 solid cam.

Re: Powervalve? [Re: PARTSMAN440] #737857 07/01/10 09:30 AM 07/01/10 09:30 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Never ran a holley carb before and need some input. My buddie tell me to take out the powervalve because race cars dont need them. I bought carb new, it has 76 jets in the primarys with a 45 powervalve and 84 jet in the sec. with no powervalve. he says to take uot the 76 out of the primarys and put in 82s and tune from there. My junk is a 65 valiant 2900lbs, backhalfed and tubbed, 30 over 440 with ported 906 heads and a 590 solid cam. I would agree with him... I'm not a big fan of PVs on a race engine.... sure some guys use them BUT most are street/strip guys.... to me its just another thing that can fail.... JMO

Re: Powervalve? [Re: PARTSMAN440] #737858 07/01/10 09:31 AM 07/01/10 09:31 AM
Joined: Mar 2003 Posts: 2,524 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,524 PA	Do you run it on the street any? Sometimes power valves are needed to clean up part throttle cruise on the street. I have to run a power valve to clean my dominator up at part throttle footbraking it. As long as the carb is set up the same as far as the primary/secondary air bleeds and emulsion is concerned I would take the power valve out and just square jet it. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: Powervalve? [Re: moparacer] #737859 07/01/10 09:51 AM 07/01/10 09:51 AM
Joined: Aug 2005 Posts: 163 DES MOINES IOWA P PARTSMAN440 OP member
PARTSMAN440 OP member P Joined: Aug 2005 Posts: 163 DES MOINES IOWA	This car is strictly a race car, I have always ran a thermoquad in the past with the car running 6.80s in the 1/8th. I thought I better learn how to tune on holley before going to bigger engine with aluminum heads which is going to be my winter prodgect.

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