Has anyone tried a Holly Off Road Avenger Carbs? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Brewski* · 04-29-2011, 01:16 PM

Has anyone tried a Holly Off Road Avenger Carbs? Likes and Dislikes? Pros/Cons?
Thanks.

Psycho71 · 04-29-2011, 02:29 PM

Not the truck avenger, but I've been using their street avengers for a couple of years now. I have one on my '71 and now one on my burb. I like them myself. Not a huge difference from a normal Holley, just a few upgrades included with them that the regular carbs don't have. Since my burb is 4x4 I am thinking of putTing the notched floats and jet extensions in it. But still on the fence about TBI'ing it anyway.
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1malo68 · 04-30-2011, 05:18 AM

I've done a lot of research on them and took the plunge. I don't have my truck on the road ( or off the road ) yet, but i've heard nothing but good about them. Mine's a 670cfm on an '87 383 stroker in a 68 short bed. They're supposed to be able to take a pretty steep angle and side angle without flooding. I wish I could tell you more, but I'm about a year out from completing my project. I thought about TBI, but I don't want any computers

rayfinseats · 04-30-2011, 07:54 PM

I have always heard Qjets work pretty good off road but as far as Holleys go they are probably your best bet.

snj8198 · 05-01-2011, 01:37 PM

I ran the 670 on my stroker BB for a bit and was pleasantly surprised with it. I tuned it with a four gas analyzer. From out of the box it only needed fattening up on the secondaries 2 jet sizes to feed up to 6,000rpm. It had great off idle performance with 15inches of vacuum and and did not stumble out on wash board or off camber situations but got terrible mileage compared to other carbs I have ran on this motor. A qjet could be tuned to do the same for a lot cheaper and better economy. But for someone who had a bit more money than time or tuning knowledge this carb seems to be a good bolt on product for the off road performance enthusiast. -steve

Brewski* · 05-03-2011, 08:10 PM

I opted for the 670 Holley. It showed up today. Hope to install it this week.

Benelli · 05-03-2011, 08:18 PM

I have the 670 and as the others said, it drinks fuel, but outta the box bolted on it ran pretty decent. I was impressed.

Brewski* · 05-05-2011, 12:09 AM

Installed today. First impressions are on the up side. Very nice overall out of the box performance over the Edelbrock 1406 and Rochester. Really smoothed out the new Jasper Class 1 RV motor. Hope to get it on the highway and off road a little tomorrow to see what its really like.

04-29-2011, 01:16 PM	#1
Brewski* Registered User Join Date: Aug 2001 Location: Rocky Mount, MO Posts: 1,293	Has anyone tried a Holly Off Road Avenger Carbs? Has anyone tried a Holly Off Road Avenger Carbs? Likes and Dislikes? Pros/Cons? Thanks.

04-29-2011, 02:29 PM	#2
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Re: Has anyone tried a Holly Off Road Avenger Carbs? Not the truck avenger, but I've been using their street avengers for a couple of years now. I have one on my '71 and now one on my burb. I like them myself. Not a huge difference from a normal Holley, just a few upgrades included with them that the regular carbs don't have. Since my burb is 4x4 I am thinking of putTing the notched floats and jet extensions in it. But still on the fence about TBI'ing it anyway. Posted via Mobile Device __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!

04-30-2011, 05:18 AM	#3
1malo68 Registered User Join Date: Aug 2010 Location: Lost Wages, NV Posts: 201	Re: Has anyone tried a Holly Off Road Avenger Carbs? I've done a lot of research on them and took the plunge. I don't have my truck on the road ( or off the road ) yet, but i've heard nothing but good about them. Mine's a 670cfm on an '87 383 stroker in a 68 short bed. They're supposed to be able to take a pretty steep angle and side angle without flooding. I wish I could tell you more, but I'm about a year out from completing my project. I thought about TBI, but I don't want any computers Attached Images __________________ 1968 K10/30 *Frame Off Project "Overkill"* My 5 year, $30,000.00 toy

04-30-2011, 07:54 PM	#4
rayfinseats Registered User Join Date: Dec 2010 Location: sioux city, iowa Posts: 619	Re: Has anyone tried a Holly Off Road Avenger Carbs? I have always heard Qjets work pretty good off road but as far as Holleys go they are probably your best bet.

05-01-2011, 01:37 PM	#5
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: Has anyone tried a Holly Off Road Avenger Carbs? I ran the 670 on my stroker BB for a bit and was pleasantly surprised with it. I tuned it with a four gas analyzer. From out of the box it only needed fattening up on the secondaries 2 jet sizes to feed up to 6,000rpm. It had great off idle performance with 15inches of vacuum and and did not stumble out on wash board or off camber situations but got terrible mileage compared to other carbs I have ran on this motor. A qjet could be tuned to do the same for a lot cheaper and better economy. But for someone who had a bit more money than time or tuning knowledge this carb seems to be a good bolt on product for the off road performance enthusiast. -steve __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

05-03-2011, 08:10 PM	#6
Brewski* Registered User Join Date: Aug 2001 Location: Rocky Mount, MO Posts: 1,293	Re: Has anyone tried a Holly Off Road Avenger Carbs? I opted for the 670 Holley. It showed up today. Hope to install it this week.

05-03-2011, 08:18 PM	#7
Benelli Watchin the rust grow Join Date: Oct 2008 Location: Western Nebraska Posts: 950	Re: Has anyone tried a Holly Off Road Avenger Carbs? I have the 670 and as the others said, it drinks fuel, but outta the box bolted on it ran pretty decent. I was impressed. __________________ 1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done 2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold

05-05-2011, 12:09 AM	#8
Brewski* Registered User Join Date: Aug 2001 Location: Rocky Mount, MO Posts: 1,293	Re: Has anyone tried a Holly Off Road Avenger Carbs? Installed today. First impressions are on the up side. Very nice overall out of the box performance over the Edelbrock 1406 and Rochester. Really smoothed out the new Jasper Class 1 RV motor. Hope to get it on the highway and off road a little tomorrow to see what its really like. Attached Images



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