dual quads

[nickaboni2]

am having a stude 289 built by tbow, bored out to 299 and using mostly r3 components. will a edelbrock dual quad on an r4 intake work well [?]

[Rerun]

Sounds like too much carburation to me. At 299 CID, normally aspirated, one 600 (or 500) CFM Edelbrock should be fine.

Jim Bradley
Lewistown PA
'64 Daytona HT "Rerun"

[nickaboni2]

quote:Originally posted by Rerun

Sounds like too much carburation to me. At 299 CID, normally aspirated, one 600 (or 500) CFM Edelbrock should be fine.

Jim Bradley
Lewistown PA
'64 Daytona HT "Rerun"

Jim would it perform any better with the duals

[StudeRich]

I think at right about 6000 RPM and 130 MPH, you would start to notice an improvment!

StudeRich
Studebakers Northwest
Ferndale, WA

[nickaboni2]

quote:Originally posted by StudeRich

I think at right about 6000 RPM and 130 MPH, you would start to notice an improvment!

StudeRich
Studebakers Northwest
Ferndale, WA

how about the initial thrust since 130 is a little tooooo much

[JDP]

The dual fours may well hurt driveabilty, and acceleration until you get way up in RPM.

JDP/Maryland
63 R2 SuperHawk (Caesar)
spent to date $54664,75
64 R2 GT (Sid)
spent to date $62,839.60
63 Lark 2 door
51 Commander
39 Coupe express
39 Coupe express (rod)

[nickaboni2]

quote:Originally posted by JDP

The dual fours may well hurt driveabilty, and acceleration until you get way up in RPM.

JDP/Maryland
63 R2 SuperHawk (Caesar)
spent to date $54664,75
64 R2 GT (Sid)
spent to date $62,839.60
63 Lark 2 door
51 Commander
39 Coupe express
39 Coupe express (rod)

so you are saying at low rpm's and low speeds the car will not run well[?] well then what to use

[StudeRich]

As Jim (rerun) said: a 600 CFM Edelbrock Performer AFB clone will handle a big valved, high performance (cammed) 289 (299)just fine. And a stock 289 is better off with the 500.

Even with R3/R4 heads the R4 did not run that good!

StudeRich
Studebakers Northwest
Ferndale, WA

[JDP]

It will tend to bog, and have slow throttle response, but once you get wide open throttle at high RPM's, it'll help a bit. If you were running 4:11 gears on the street, it might be fun. BTW, I think the R4 with dual fours got around 12 MPG.

JDP/Maryland
63 R2 SuperHawk (Caesar)
spent to date $54664,75
64 R2 GT (Sid)
spent to date $62,839.60
63 Lark 2 door
51 Commander
39 Coupe express
39 Coupe express (rod)

[PackardV8]

FWIW, we raced both 289" Studebakers and Fords back in the bad old days. I never saw a 2-4bbl low-profile intake outrun the best single 4-bbl intakes. The OEM iron head intake ports on both engines are far too small to take advantage of the extra breathing of the 2-4bbl intake. As JDP says, it hurts below 6kRPM and they both flew apart above 7kPRM.

thnx, jack vines.

PackardV8

[JDP]

Yea, but the do look cool, maybe just use 2 barrels of each carb.

JDP/Maryland
63 R2 SuperHawk (Caesar)
spent to date $54664,75
64 R2 GT (Sid)
spent to date $62,839.60
63 Lark 2 door
51 Commander
39 Coupe express
39 Coupe express (rod)

[PackardV8]

Correct, as usual, JDP; the R4 2-4bbls for bling or a modern hi-rise bang for the buck? Recently, HRM tested every intake manifold available for the old 383" Mopar. Nearly all the single 4-bbl intakes made more horsepower than the low-rise 2-4bbl. The most modern, the Air-Gap, made thirty-five more horsepower.

As to running on the primaries, according to Edelbrock's published data, the vacuum secondaries on two 500 CFMs will almost never open on a 299" Studebaker anyway. It takes sustained RPM above 6K to require more than the 500 CFM the two primaries provide. At Bonneville, maybe an R4 can be held at wide-open above 6K sufficiently long to generate enough vacuum to get them to begin to open. On the street, very difficult. With an R1 cam and compression, if it isn't lugged below 2K, the R4 intake can be made to run decently, without bogging or spitting. They just won't make any extra horsepower and they will use a lot more fuel.

thnx, jack vines

PackardV8

[Dan White]

I have a dual 4 manifold or the old 50s style small 4bbls that might not be too bad. I will try to post a picture when I get a chance.




Dan White
64 R1 GT
64 R2 GT

[N8N]

I know that Holley makes a 390CFM 4bbl; I'm not a big Holley fan but if you like the look o dual quads that might be the way to go as 780 CFM is "less too big" than 1000 or more.

The question is, does the R4 style intake have enough room to mount Holleys with their big fuel bowls; I don't know the answer to that question.

nate

--
55 Commander Starlight

http://members.cox.net/njnagel

[Dick Steinkamp]

quote:Originally posted by Dan White

I have a dual 4 manifold or the old 50s style small 4bbls that might not be too bad. I will try to post a picture when I get a chance.

Early Corvette 283's successfully ran factory dual quads. Like Dan says, they were teenie tiny WCFBs or Rochesters. They would look super cool [8D] on a Stude and probably work just fine.