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03-12-2007, 03:56 PM
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#1 |
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NCStroker
Join Date: Aug 2006
Location: NC
Posts: 89
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Which Holley?
I am looking at putting a new carb on my 383 stroker. The edelbrock 650 isnt delivering enough fuel on the top end. What are your guys opinions on the Holley Street Avenger 770. Pros-Cons? Any other opinions will be much appreciated. Thanks for the help.
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1971 Chevy C/10-Built 383 Stroker 
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03-12-2007, 04:02 PM
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#2 |
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Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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Re: Which Holley?
I would also like too know, as I am going to build a 383 and not sure which carb to use.
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1997 GMC Sierra Ext 1965 Mustang |
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03-12-2007, 04:07 PM
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#3 |
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Registered User
Join Date: Mar 2007
Location: Boise
Posts: 107
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Re: Which Holley?
My intention also, but mine will be for off road use, which means a smoooooth idle and plenty of area under the torque curve, vs. high peak HP. So for me, a 650 quadra-jet is the answer. Some places do sell tuned-up q-jets, and a 750 is available.
Holley isn't worth crap off road, unless you like to alternate between flooding and starving, and enjoy keeping a screwdriver (or allen/torx wrench) in your pocket for those fun emergency tuneups.
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'70gmc 3/4ton 4X4, re-arch and 2" add-a-leaf lift. '77 400sbc, '82 axles, d60front, 14bolt rear. Probably some 285/75/16 Toyo m/t's on my stock rims coming up. Last edited by martinkh; 03-12-2007 at 04:08 PM. |
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03-12-2007, 04:11 PM
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GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
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Re: Which Holley?
What are your determing factors to let you know your 650 edl. is not delivering enough at the top end.
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03-12-2007, 06:37 PM
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#5 | |
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NCStroker
Join Date: Aug 2006
Location: NC
Posts: 89
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Re: Which Holley?
Quote:
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1971 Chevy C/10-Built 383 Stroker
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03-12-2007, 04:38 PM
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#6 |
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Registered User
Join Date: Jan 2007
Location: Athens, GA
Posts: 112
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Re: Which Holley?
I will let you know in a couple of weeks. I bought the 770 avenger and hope to have it installed and going soon.
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1968 C10 Stepside 396 bored .030 TH400 |
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03-12-2007, 06:03 PM
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#7 |
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Registered User
Join Date: Nov 2003
Location: st. louis area
Posts: 1,551
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Re: Which Holley?
how much RPM are you looking at in the top end ? If its starving for fuel...thats not really a carb cfm issue. Does Edelbrock even make a 650 CFM carb ? anyway 650 cfm should support up to 5500 RPMs on a 383...maybe a lil more.
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75 GMC C-15 short/step factory 454, lowered |
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03-12-2007, 06:15 PM
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#8 |
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Senior Member
Join Date: Sep 2006
Location: Vancouver, WA
Posts: 1,015
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Re: Which Holley?
just for reference, the Edelbrock 1406 is a 600cfm, but the Edelbrock thunder AVS series comes in a 650cfm, & an 800 cfm.
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03-12-2007, 06:24 PM
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#9 |
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Registered User
Join Date: Nov 2003
Location: st. louis area
Posts: 1,551
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Re: Which Holley?
thats right, I forgot about the AVS model
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75 GMC C-15 short/step factory 454, lowered |
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03-12-2007, 06:29 PM
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#10 |
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Active Member
 
Join Date: Oct 2006
Location: Mesa, AZ
Posts: 682
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Re: Which Holley?
I run a 750 double pumper on my 383 and it runs great.
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03-12-2007, 06:39 PM
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#11 |
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NCStroker
Join Date: Aug 2006
Location: NC
Posts: 89
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Re: Which Holley?
it could be a 600cfm carb. It is the edelbrock carb and intake that originally came on the truck. I did the rebuild and figured that combination would be sufficient.
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1971 Chevy C/10-Built 383 Stroker
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