I have an idea, but I'll probably get reported and permanently banned so I won't type the idea.
Probably for the best. lol
I have an idea, but I'll probably get reported and permanently banned so I won't type the idea.
I have an idea, but I'll probably get reported and permanently banned so I won't type the idea.
That's great info Geoff and thanks but are we really comparing apples for apples here? These differences were solely due to the carburetors that the cars were running? Different cars, different engines.66 Sat,
I would encourage you to run the 625 AVS2. It has annular boosters in the primaries, which brings you to a new world in throttle response. This carb has smaller pri bores than your 600 Holley [ 1 7/16" v 1 9/16" ] for better response & mileage, with bigger secondaries when you want the power.
Chrys cars used Carter 4bbl AFB & AVS designs during the glory years, including on the Hemi.
I don't have any more direct comparisons as shown earlier, but in Roger Huntington's American Supercar book, 9 supercars are listed. These are NOT magazine tests, these are his own, unbiased testing. Quickest was the 68 Plym which ran 14.6....with a 750 Carter AVS on a 440. RH estimated the actual hp at 330. 3.23 axle. A 69 Ford Torino, 428 engine, Holley 735 carb, ran 14.9 with a more helpful 3.50 axle. All the others ran in the 15s.
He says this of the 340, AVS powered [ p. 132 ] : '' One of the swetest engines of the era was the 340...'It combined power & quick response with good fuel economy.' A 'Cuda with a lowly 3.23 axle ran 14.8 @ 96 mph....big block territory for a stock engine.
I do not know how long you have been in Oz, but various Aussie muscle cars were compared & the results published in Top Aussie Supercars. The 340 Charger, AVS equipped, v the 351 Falcon GT with 830cfm Holley. The Charger was 150 lb lighter, but down 11 cu in.
" We managed to 15.5s in the Charger, while the Falcon was battling to break 16 secs. Our test crew felt that the Fal lost a lot of time below 40 mph [ throttle response? ] - an area where the Charger is pretty fast."
" The 340 is definitely smoother at high revs & it doesn't haver the 351's tendency to lose tune after hard use"
The engine now has 354 inches I take it. Now the original carbs on the 315 or 318 would have been a Carter 2 barrel or possibly a WCFB or an early AFB.Hey guys I'm looking for some input on my next carburetor. It's a 66 Satellite with a 354 poly stroker. 3.58" Scat forged crank, Scat rods, Ross pistons 0.065 over, 10.8:1 compression. Poly heads with a little bit of porting, 1.94"/1.60" valves, Schneider solid lifter cam 264F (220° at .050, 0.450 lift). Topped off with a factory cast iron intake and currently a 1850 Holley 600 (vac sec). It's got headers, stepped from 1 5/8 to 1 3/4, 2.5" dual system.
Car is auto, 3.23 rear, used for hot street, cruising and at the track say 6 times a year. Weighs 3,640 lbs.
The car runs great with the Holley but I'd like to try something else. I've also got a 700 double pumper that I swap in and out and the car feels faster with the bigger carb (and made 7hp more on the chassis dyno, 341hp at the wheels vs 334hp with the 600) but the 600 is better on the street. I'm going to try the double pumper at the track early next year to see what difference it makes there.
There's so many choices my head's spinning.
I wouldn't mind trying an Edelbrock AVS2 but should I go 650 or 800? Normally I would think 650 but with the annular boosters would the 800 still work ok?
Or maybe a Holley 670 Street Avenger v/s?
Or a 650 double pumper?
Or a Brawler 680 v/s BR-67317?
I was leaning toward a 625 Street Demon but the reputation for poor build quality and a few design issues is putting me off.
Then there's boosters: straight, downleg, stepped, annular...man there's some choices out there.
I'm wondering what I'm leaving on the table with the 600 1850. I'd like the same reliability (super reliable), better low end and midrange, and maybe some more at the top (so basically more everywhere haha).
Any advice appreciated - I realise this is a very open question and one where brand loyalties are strong.
View attachment 1716170910
View attachment 1716170911
The difficulty with the Thermoquad aside from age is that like the Quadrajet, those big secondary throttle plates will not clear the factory manifold. True that a carb adapter could be purchased if there is enough underhood height.Thermoquad.
That is a rare piece. Carter also made some like that for the Pontiac race program. Rare as the Autolite Inline 4V carbs.
The Edelbrock carbs have a dual bolt pattern, so should ba a dropon that way. The AVS2 650 should be a bolt on. The AVS2 800 likely requires opening the secondary bores in the manifold.OK thanks for all the replies, AVS2 650 is looking like a good choice but will it work with the square bore manifold I have?
View attachment 1716171154
I am going to open the up the center section and port the manifold as per Gary Pavlovich's advice but that might not be for some time.
Last time I checked, which was like Yesterday, all the new AVS2's have annular boosters...that engine will be fine with the 650.66 Sat,
I would encourage you to run the 625 AVS2. It has annular boosters in the primaries, which brings you to a new world in throttle response. This carb has smaller pri bores than your 600 Holley [ 1 7/16" v 1 9/16" ] for better response & mileage, with bigger secondaries when you want the power.
Chrys cars used Carter 4bbl AFB & AVS designs during the glory years, including on the Hemi.
I don't have any more direct comparisons as shown earlier, but in Roger Huntington's American Supercar book, 9 supercars are listed. These are NOT magazine tests, these are his own, unbiased testing. Quickest was the 68 Plym which ran 14.6....with a 750 Carter AVS on a 440. RH estimated the actual hp at 330. 3.23 axle. A 69 Ford Torino, 428 engine, Holley 735 carb, ran 14.9 with a more helpful 3.50 axle. All the others ran in the 15s.
He says this of the 340, AVS powered [ p. 132 ] : '' One of the swetest engines of the era was the 340...'It combined power & quick response with good fuel economy.' A 'Cuda with a lowly 3.23 axle ran 14.8 @ 96 mph....big block territory for a stock engine.
I do not know how long you have been in Oz, but various Aussie muscle cars were compared & the results published in Top Aussie Supercars. The 340 Charger, AVS equipped, v the 351 Falcon GT with 830cfm Holley. The Charger was 150 lb lighter, but down 11 cu in.
" We managed to 15.5s in the Charger, while the Falcon was battling to break 16 secs. Our test crew felt that the Fal lost a lot of time below 40 mph [ throttle response? ] - an area where the Charger is pretty fast."
" The 340 is definitely smoother at high revs & it doesn't haver the 351's tendency to lose tune after hard use"
Yeah. Like the super rare Cross Boss dual inline four they offered. This would look good on a poly. lolThat is a rare piece. Carter also made some like that for the Pontiac race program. Rare as the Autolite Inline 4V carbs.
Annular primaries but regular secondaries. With the Edelbrock AVS2 models they build them with secondary venturis which the AVS do not have.Last time I checked, which was like Yesterday, all the new AVS2's have annular boosters...that engine will be fine with the 650.
I wonder if clockwise or counter clockwise is more conducive to turd removal? I guess we may never know. lol
I've heard vegemite is nasty, but I've never tried it. My son is living in Australia now and says they certainly have some "different" food. He does all the cooking in their household. He whooped up some of my wife's sausage gravy and biscuits not long ago and he said they oinked it down like they hadn't eaten in days. They'd never had it.If we're keeping score, my vote is for the AVS2 650 for the reasons others have put forward.
As for the question quoted, I wonder if it matters whether the individual is from North America or 'down under'? What about a North American in Australia and vice versa? Or is it food dependent (Vegemite is just plain nasty)? I think I've just found my next research project to scam the government out of another bazillion dollars. Thanks guys!
He's in East Bunbry, wherever that bees.lolYour son can have my Vegemite, I hate the taste.....
What state/city is he in?
Too bad we did not know back then what we know now. Just as I started working you could go into a Ford dealer and order one like shown or the single carb. For Mopars, a Challenger TA or Cuda AAR. Put in storage on blocks. Or one of the wing cars. A couple of those now with basically 0 miles and retirement would be a bit easier.Yeah. Like the super rare Cross Boss dual inline four they offered. This would look good on a poly. lol
View attachment 1716174005
I know, right? Too bad wisdom usually only comes with age. lolToo bad we did not know back then what we know now. Just as I started working you could go into a Ford dealer and order one like shown or the single carb. For Mopars, a Challenger TA or Cuda AAR. Put in storage on blocks. Or one of the wing cars. A couple of those now with basically 0 miles and retirement would be a bit easier.