Edelbrock Thunder AVS carbs
#1197746
03/15/12 09:31 PM
03/15/12 09:31 PM
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Joined: Nov 2004
Posts: 4,330 Lynchburg, VA
Leon441
OP
master
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OP
master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Just rebuild the engine in my dad's 69' Fury convertable. He wanted a four barrel carb upgrade. So I got an old Edelbrock performer intake and milled the name off and painted it like stock. Got the engine in car with a Holley 650 vacuum secondary that came with a metering block on the rear for additional tuning. Bought carb off Ebay. Turns out everything had to be moved around to accomodate the Holley. And now the Holley proves to be junk car ran terrible. Put the original 2 barrel back on and every thing runs fine. But, really want to make the switch. Was hearing the Carter Thunder AVS was a great little street carb.
This is a 383 with a cam ground for mileage and a little bowl work behind the valves. Should I rely on the CFM calculator and buy the 500 CFM sense the car is not driven for performance or get the 650 which may give a little more performance on that occassional two lane road sling shot pass?
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Edelbrock Thunder AVS carbs
[Re: superbeedave]
#1197750
03/17/12 03:16 PM
03/17/12 03:16 PM
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Joined: Nov 2004
Posts: 4,330 Lynchburg, VA
Leon441
OP
master
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OP
master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Has anyone tried a 500 CFM Edelbrock Thunder AVS?
Or did everyone just assume they needed the 650. Reason I ask is at 5,000 RPM which is about all this engine will ever turn a 500 CFM should be plenty. Reading the post and seeing that guys are going up on squirters and jets......Well that is a tell tell sign the carburator is too big.
Does anyone know the size of the original 4 barrel for a 383 from the factory?
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Edelbrock Thunder AVS carbs
[Re: RUNCHARGER]
#1197752
03/17/12 04:03 PM
03/17/12 04:03 PM
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Joined: Oct 2005
Posts: 1,305 Lakewood, Colorado
herkamer
pro stock
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pro stock
Joined: Oct 2005
Posts: 1,305
Lakewood, Colorado
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I know guys who have ran a 500 CFM AFB on a 440. Back in the days of decent fuel, he was getting high teens for mileage. You will sacrifice some top end power, but should be stout on the bottom. For a mileage oriented build I would totally go with one.
Matt 69 Dart Swinger 340 83 W350, Megasquirted with 46RH Old news: 72 Demon street/race mobile Latest: 70 Duster backhalf car and even more
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Re: Edelbrock Thunder AVS carbs
[Re: GO_Fish]
#1197757
03/17/12 11:54 PM
03/17/12 11:54 PM
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Joined: Jan 2003
Posts: 14,610 Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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My '70 Bee had a 335HP 383. The stock Holley on it was less than 500cfm. I have a couple of Carters that came on the single quad 426 wedge motors. Less than 500cfm.
I put a 625 Carter on it and picked up some power and MPG's! Also went with a Street Dominator.
Last edited by Rug_Trucker; 03/17/12 11:57 PM.
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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