Usa Cars Forum - Dreams on Wheels

Does a bigger carb make more power? What's thelimit?



Demon Carbs responds: Larger carburetors can make morepower on a dynamometer, but this can also result in slower accelerationand lower efficiency of fuel atomization. Generally we find that you'rebetter off leaning towards a slightly smaller carburetor than a largerone, as it'll operate more efficiently and provide better accelerationfor the vehicle.



How do I choose the right size carburetor for my engine?



Edelbrock responds: A simple formula can assist youwith this. Multiply your cubic-inch displacement by the maximum rpmlimit and then divide by 3,456 to represent the volumetric efficiency.The result is the amount of cfm the engine requires at the maximum rpmlimit.



Example:

350 ci x 6,000 rpm = 2,100,000

2,100,000 / 3,456 = 608cfm

A 600-cfm carb would would be sufficient.



dunque ho sostituito i parametri,con quelli del Pontiac 400(T/A) 400 x 4000...ecc.ecc ne ? uscito quasi 500Cfm..........DOMANDONA...perche il POntiac Monta un 800CFM?



A voi la palla.....anzi il carburatore

[quote name='nomads' post='146161' date='7/8/2008, 22:07']Does a bigger carb make more power? What's thelimit?



Demon Carbs responds: Larger carburetors can make morepower on a dynamometer, but this can also result in slower accelerationand lower efficiency of fuel atomization. Generally we find that you'rebetter off leaning towards a slightly smaller carburetor than a largerone, as it'll operate more efficiently and provide better accelerationfor the vehicle.



How do I choose the right size carburetor for my engine?



Edelbrock responds: A simple formula can assist youwith this. Multiply your cubic-inch displacement by the maximum rpmlimit and then divide by 3,456 to represent the volumetric efficiency.The result is the amount of cfm the engine requires at the maximum rpmlimit.



Example:

350 ci x 6,000 rpm = 2,100,000

2,100,000 / 3,456 = 608cfm

A 600-cfm carb would would be sufficient.



dunque ho sostituito i parametri,con quelli del Pontiac 400(T/A) 400 x 4000...ecc.ecc ne ? uscito quasi 500Cfm..........DOMANDONA...perche il POntiac Monta un 800CFM?



A voi la palla.....anzi il carburatore [/quote]



perch? le pontiac pompano pi? delle altre ............comunque 4000 non ? il redline o forse il tuo contagiri ? quello di un astra . amen

Sport Fury GT 440 ha un Holley 600....idem Cuda 383 71. E fanno il quarto di miglio in 14 secondi.

la mia in 13

Stock

prestazioni di derivazione standard

i quadrijet sono diversi da quelli a depressione , dopo basta sostituire i getti e ottieni quello che vuoi

Andate a Treviglio e divertitevi, no?

Poi arrivo io con la Mustang e vi faccio il sedere ad entrambi...



Ok, basta...



PS=Il mio 289, monta (o montava...) un Autolite 4V da 480cfm. Secondo Edelbrock, dovrei montare un 500/550cfm...

@papera....i 4000(redline 5000...poi i pistoni trovano altre strade ) sono i giri in cui il motore tira fuori i 200cv(220 w72 package).....poi posso anche avere il contagiri dell Astra..ma nn cambia le cose!

Mi aSsocio al paragone di Mopar.....e se permettete mi fido del signor Edelbrook e della Signora Demon



di certo all uccellone nn manca lo scatto..............il quesito era giusto per capire,e cmq si rivolgeva anche ad altre marche





The WS6/W72 combination quickly established the 1978 Trans Am as the "King of the Hill", long before there was such a thing a a Corvette ZR-1. Magazines loved the car and the Spring 1978 issue of Road Test magazine squared off a Z28, a Corvette, and a Trans Am in a street fight. The T/A was clearly chosen as the easiest car to drive fast.



As a result of the test, it was reported that it took 15.2 seconds to cover the quarter mile, going through the traps at 93.4 mph. It could spring from zero-to-sixty in 7.2 seconds and had a terminal speed of 123 mph, a full 600 rpms over the redline of 5000. In braking, the 3720 pound T/A test car took 149 feet to stop from 60 mph. In a circle, the Trans Am could generate .83g of grip which matched the test Corvette and was well beyond the .76g the Camaro Z28 capable of.

ha ha ha sig Nomads ws6/w72 ? una bella cosa a cominciare dai fiocchi di neve da 8inc ma non venirmi a dire che hai paura di rompere il motore ........... ha ha ha ha regola la fase che vai bene ha ha ha !!!



complimenti per la macchina

E nn chiamarmi Sig ......

ok miss !