inches is inches!
how many of you would run a 390 carb on a 283 (that you just bored .060"?) Well thats a 292 inch v-8. Most guys would run a 600 Holley on a a bored 283, or a 307, or 289 ford, or a 290 AMC. Heck, some guys try to put 750 double pumpers on them
My opinion the only reason for everybody liking (if they really do) a 390 has to be that it aint big enough to cause a problem with 250-292 six cylinder stockers (same can be said for 500 cfm holley 2 bbls). But its your money.
The trip side draft webs can work o.k. because a tuner can easily tune all the circuits on these webers and match it to the particular motor/cam needs-and you have virtually no manifolding losses since they mount nearly directly to the head ports.
Look to the junk yards and find much cheaper carb sources-stay away from smog era carbs. Study the rochester books available (especially doug roe's), check out the Holley and Carter books by SA. A little bit of buckshot lead can be tamped into the various emission passages in the smog carbs to help detox them and make them into some smooth running carb for very small coin.
A word of caution, It is better in all cases to err to the smaller size-you just cant put a trip set of 50mm webs DCOEs on a stocker and expect to tune the stumbles outta it!
your turn Hank
Last edited by preacher-no choir; 07/16/11 08:56 PM.
