Holley question

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.

nhramnl · 04-03-2017, 07:28 AM

I was told decades ago to remove the power valves on Holley carbs being used for all-out drag racing and simply jet the carb up 3 or 4 jet sizes. The rationale I was given (and it seems to make sense) is that power valves are devices that provide part throttle enrichment (i.e. they open when you depress the accelerator and vacuum drops to their approximate opening point), and drag race engines spend the entire run at WOT.

SSDiv6 · 04-03-2017, 11:22 AM

Quote:

Originally Posted by Rod Greene

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, I suggested the Daytona Sensors because you stated you wanted a good unit to use in the future in other projects.

Therefore, if cost is the issue, I would recommend the NGK unit. It works great and very affordable.

I can assure you there are many that have been disappointed with the LM-2 units due to issues and not being reliable.

03-31-2017, 07:59 PM	#2
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 539 Likes: 8 Liked 286 Times in 108 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	#3
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 424 Liked 242 Times in 81 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	#4
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,044 Likes: 712 Liked 1,585 Times in 582 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	#5
GallopinGhost Member Join Date: Jun 2010 Location: VA Posts: 230 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	#6
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 424 Liked 242 Times in 81 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.

04-03-2017, 07:28 AM	#7
nhramnl Senior Member Join Date: Feb 2010 Posts: 507 Likes: 8 Liked 358 Times in 83 Posts	Re: Holley question I was told decades ago to remove the power valves on Holley carbs being used for all-out drag racing and simply jet the carb up 3 or 4 jet sizes. The rationale I was given (and it seems to make sense) is that power valves are devices that provide part throttle enrichment (i.e. they open when you depress the accelerator and vacuum drops to their approximate opening point), and drag race engines spend the entire run at WOT.