street demon or dp?
With that cam, If you want response I would use a 4 corner idle circuit carb. You want to idle off the secondaries so not to be into the primary transfer ports. Square the primaries over the transfer ports and leave it there. Use the secondaries to adjust the idle.
On a iron head 340 I never had smaller then a 750. The 340 in my Duster has a 1050 and the EGT's were perfect and the response was right there. Nailing the throttle off a foot brake would lift the wheels. I have a 318 bone stock 2bbl motor. I put a 600 AFB on it. I cannot believe how crisp it is.
Most guys read plugs as i did in the past. Using EGT gauges on each bank will tell you the true air fuel and where it needs to be. Exhaust effects carb choice in many ways. That 318 with the 600 has a 2 1/2 exhaust with 1 5/8 primaries. The 340 with the 1050 has 3 1/2 exhaust with 2 inch primaries. 1971 340's came with a 800 from the factory.
The gold Demon we just finish got a 800 quick fuel 4 corner idle circuit. The car is 4 spd. and will break the tires loose on a roll in third gear. I just had that car out for a ride last week.
Now if your after economy get a 600 or a 500 2bbl. That is the same as a fat guy like me trying to suck a milk shake down through a coffee straw. In the past six pack's were used on bone stock motors the ones that I owned did not seem over carbureted.
With that cam, If you want response I would use a 4 corner idle circuit carb. You want to idle off the secondaries so not to be into the primary transfer ports. Square the primaries over the transfer ports and leave it there. Use the secondaries to adjust the idle.
On a iron head 340 I never had smaller then a 750. The 340 in my Duster has a 1050 and the EGT's were perfect and the response was right there. Nailing the throttle off a foot brake would lift the wheels. I have a 318 bone stock 2bbl motor. I put a 600 AFB on it. I cannot believe how crisp it is.
Most guys read plugs as i did in the past. Using EGT gauges on each bank will tell you the true air fuel and where it needs to be. Exhaust effects carb choice in many ways. That 318 with the 600 has a 2 1/2 exhaust with 1 5/8 primaries. The 340 with the 1050 has 3 1/2 exhaust with 2 inch primaries. 1971 340's came with a 800 from the factory.
The gold Demon we just finish got a 800 quick fuel 4 corner idle circuit. The car is 4 spd. and will break the tires loose on a roll in third gear. I just had that car out for a ride last week.
Now if your after economy get a 600 or a 500 2bbl. That is the same as a fat guy like me trying to suck a milk shake down through a coffee straw. In the past six pack's were used on bone stock motors the ones that I owned did not seem over carbureted.
