Holley question

Rod Greene · 03-31-2017, 03:35 PM

Since I have never raced a car with a Holley on it or owned one, I have question.
I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions?

Thanks

Larry Hill · 03-31-2017, 03:42 PM

Sorry can't help, I have zero knowledge on drive ability. Only care about WOT and air-fuel.

Rod Greene · 03-31-2017, 04:25 PM

So Larry in your race setup do you use a Power Valve? Regular or high flow?
The more I mess with the Holleys the better I like my Thermoquad.

Eric Merryfield · 03-31-2017, 04:34 PM

Quote:

Originally Posted by Rod Greene

Since I have never raced a car with a Holley on it or owned one, I have question.
I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions?

Thanks

Wouldn't run a PV on a race motor, certainly not on a stick.....whats the point! Frame of reference, I ran a stock 750 holley with a 6.5PV on my stock motor lil red express ran great, we dropped a crate motor long block with a 509 cam in it, some cheap 202 heads, and that killed the low end so much it felt like it needed a 2000 rpm higher stall convertor....put a 3.5 PV in it, and instant response, and tire shredding fun.

SSDiv6 · 03-31-2017, 05:15 PM

Quote:

Originally Posted by Rod Greene

Since I have never raced a car with a Holley on it or owned one, I have question.
I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions?

Thanks

Rod, you need to talk to Steve Wann.
He is the guy that knows the in's&out's of the 6-bbl.

Woodfin · 03-31-2017, 07:59 PM

A reasonable suggestion is to equip them as Chrysler did originally. Also, in high-performance street trim, a 6.5 valve is common with a single carb. I estimate a 6.5 or 5.5 will be just fine.

I expect you already know, no matter what level of tune or refinement you attain, it will get "yardage" not mileage

Rod Greene · 04-02-2017, 01:27 PM

OK I have decided I need to step out of the dark ages and get an wide band AFR gauge.

I am thinking An Innovate LM-2 Looking on their web site and e-bay there are many options, What recommendations would you guys have? I would use it on my street cars as well as the race car.

SSDiv6 · 04-02-2017, 03:16 PM

Rod,

Before you choose the Innovate LM-2, take a look at the Daytona Sensors WEGO and the NGK.
My experience is that their reading are more reliable than the Innovative and AEM.

http://www.daytona-sensors.com/wego-...---8-cyl..html

https://www.ngksparkplugs.com/produc...-ratio-monitor

GallopinGhost · 04-02-2017, 08:36 PM

On paper, the LM-2 looks good. I bought one and have had problems from day 1. Tech support ranged from decent to pretty sad. If I buy another, I'd give daytona a shot.

Rod Greene · 04-03-2017, 02:01 AM

It seems that guys either love the LM2 or hate it. I posted this same question on another website and they can't say enough good things about Innovate. Makes it difficult to decide. The Daytona is a bunch more money and I had never heard of them until now. Maybe I should just buy a Racepack and make it portable.
Keep the suggestions coming guys.

03-31-2017, 03:35 PM	#1
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 514 Likes: 355 Liked 204 Times in 72 Posts	Holley question Since I have never raced a car with a Holley on it or owned one, I have question. I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions? Thanks __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

03-31-2017, 03:42 PM	#2
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,280 Likes: 1,637 Liked 9,456 Times in 1,957 Posts	Re: Holley question Sorry can't help, I have zero knowledge on drive ability. Only care about WOT and air-fuel. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-31-2017, 04:25 PM	#3
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 514 Likes: 355 Liked 204 Times in 72 Posts	Re: Holley question So Larry in your race setup do you use a Power Valve? Regular or high flow? The more I mess with the Holleys the better I like my Thermoquad. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

03-31-2017, 07:59 PM	#6
Woodfin Member Join Date: Sep 2006 Location: Kilgore TX Posts: 428 Likes: 5 Liked 70 Times in 38 Posts	Re: Holley question A reasonable suggestion is to equip them as Chrysler did originally. Also, in high-performance street trim, a 6.5 valve is common with a single carb. I estimate a 6.5 or 5.5 will be just fine. I expect you already know, no matter what level of tune or refinement you attain, it will get "yardage" not mileage

04-02-2017, 01:27 PM	#7
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 514 Likes: 355 Liked 204 Times in 72 Posts	Re: Holley question OK I have decided I need to step out of the dark ages and get an wide band AFR gauge. I am thinking An Innovate LM-2 Looking on their web site and e-bay there are many options, What recommendations would you guys have? I would use it on my street cars as well as the race car. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

04-02-2017, 03:16 PM	#8
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,991 Likes: 693 Liked 1,457 Times in 543 Posts	Re: Holley question Rod, Before you choose the Innovate LM-2, take a look at the Daytona Sensors WEGO and the NGK. My experience is that their reading are more reliable than the Innovative and AEM. http://www.daytona-sensors.com/wego-...---8-cyl..html https://www.ngksparkplugs.com/produc...-ratio-monitor

04-02-2017, 08:36 PM	#9
GallopinGhost Member Join Date: Jun 2010 Location: VA Posts: 228 Likes: 23 Liked 21 Times in 13 Posts	Re: Holley question On paper, the LM-2 looks good. I bought one and have had problems from day 1. Tech support ranged from decent to pretty sad. If I buy another, I'd give daytona a shot. __________________ Brian Carpenter Stock 1358

04-03-2017, 02:01 AM	#10
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 514 Likes: 355 Liked 204 Times in 72 Posts	Re: Holley question It seems that guys either love the LM2 or hate it. I posted this same question on another website and they can't say enough good things about Innovate. Makes it difficult to decide. The Daytona is a bunch more money and I had never heard of them until now. Maybe I should just buy a Racepack and make it portable. Keep the suggestions coming guys. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.