Posted by rickyracer (IP: 63.25.211.175) on June 05, 2000 at 21:30:03:
In Reply to: best 4 barrel for stock engine? posted by roadrage on June 05, 2000 at 13:14:31:
Holley does make a 480cfm and a 600 cfm carb, they both are good depending on the engine mods. The problem isn't the carb size it's that the secondaries are vaccuum/spring control and the 289 normally doesn't have enough air flow to open the secondaries. The factory installed spring is to stiff so you're never even opening the secondaries. Play with the springs to get the 4bbl to be a 4bbl.
And the Autolite had it's own problems, fuel linkage at the fuel inlet was a common problem. Good design, just had it's own problems.
: arghh!!
: i cant stand a V8 with a 2V carb. not that there is necessarily anything wrong with it, but i just like the look and feel of a 4V.
: 1st off, i got an edelbrock performer intake for $25. (not my favorite)
: but carb selection is going to be crucial.
: i once put a 600 cfm holley on a stock 289. it ran ok, but not really an improvement over the 2V. i am of the opinion that a 600 cfm is over-kill for a stock motor.
: i would prefer to put an edelbrock 500 cfm carb on it. it worked well on my last maverick. however, a fellow on the falcon board seems to think that a 500 is over-kill (for a stock motor) and recommends a 390 cfm holley. to me this doesnt really sound like any improvement over the 2V. what is the 2V rated at anyway? (350 cfm?)
: i also know that holley makes a 470 cfm carb. it is also possible that i might try to find one of those old motorcraft 4V's. i think many of them are rated at 470 cfm, also.
: what do yall think? eventually, i will go thru the motor and create a monster. for now, i just want a few extra ponies, fuel economy, and reliability.
: whats the best carb for my application?
: 72 maverick 302, automatic
: RR