Bob,
Im going through what I think may be your stated needs.
You have a Classic In lines aluminum head, and you want to move to the next level of performance.
The problem is that the kind of carb system that Really works, two down or side draft 3bbls or three 2bbls, simply doesnt fit without tin work under the hood, or above or through it. You need 6 venturis or chokes in the 1.375 to 1.4375" size area, and a throttle plate size of 1.6875 to 1.75 ".
Those size to engine bay restriction problems were delt with in the sixties by the greatest production engineers at that time; the Italians. A Lampredi was the ex Ferrari engineer who took his V12 big bore technology into the tight engine bays of little 4 and 6 cylinder Fiats, making modest mouses into something much more than paper tigers. The advent of twin cam Fiats and V6 Dino engined luxary cars was still some years away, but Lampredi had a big job of desiging the canted valve engines perform really well.
Here is what Lampredi had made up to turn air into the Dual and Triple carb Fiat 2300 engines in the early sixties.They used DCOE 40 carbs with 26 mm venturis.
IMHO, you need three 4412 500 cfm carbs mounted on the Weberless M190 Lynx manifold with three Lampredi style gooseneck down draft transitions. The center carb can keep its cold start choke, and the front and back carbs would have the air horns ground off to fit under hood, which would clear the spring tower brace at the back and dip under the hood at the front.
Air filtration would be taken care of by a Cobra 6 style cleaning element.
Nitrous Nick has a very good methid if making a large tall in line six get good air filtration.
viewtopic.php?f=2&t=78189&p=602645#p602645
Im going through what I think may be your stated needs.
You have a Classic In lines aluminum head, and you want to move to the next level of performance.
The problem is that the kind of carb system that Really works, two down or side draft 3bbls or three 2bbls, simply doesnt fit without tin work under the hood, or above or through it. You need 6 venturis or chokes in the 1.375 to 1.4375" size area, and a throttle plate size of 1.6875 to 1.75 ".
Those size to engine bay restriction problems were delt with in the sixties by the greatest production engineers at that time; the Italians. A Lampredi was the ex Ferrari engineer who took his V12 big bore technology into the tight engine bays of little 4 and 6 cylinder Fiats, making modest mouses into something much more than paper tigers. The advent of twin cam Fiats and V6 Dino engined luxary cars was still some years away, but Lampredi had a big job of desiging the canted valve engines perform really well.
Here is what Lampredi had made up to turn air into the Dual and Triple carb Fiat 2300 engines in the early sixties.They used DCOE 40 carbs with 26 mm venturis.
IMHO, you need three 4412 500 cfm carbs mounted on the Weberless M190 Lynx manifold with three Lampredi style gooseneck down draft transitions. The center carb can keep its cold start choke, and the front and back carbs would have the air horns ground off to fit under hood, which would clear the spring tower brace at the back and dip under the hood at the front.
Air filtration would be taken care of by a Cobra 6 style cleaning element.
Nitrous Nick has a very good methid if making a large tall in line six get good air filtration.
viewtopic.php?f=2&t=78189&p=602645#p602645