74 duster need some advice mechanical or vacuum secondaries

[m_charron]

im puttin together a 74 duster an having trouble deciding which carb to go with it . the motor is a 360 bored .40 over, ported polished heads, flat top pistons and it has a super comp cam. (my builder said it would be a minimum 400hp) that everything i know about the motor the trans is stock 727 3spd i was planning on using a holley 4150 750 dp but i will be using the car as a daily driver and am not sure if i need to go with a smaller carb or a vaccuum secondary carb ?? i have zero experience with all of this and would appreciate any advice ! thanks :sign3:

 

[70aarcuda]

the 750 holley is also available as a vacuum secondary carb...Holley 3310 is the universal carb...

 

[fishy68]

Either will work but for a mostly street car I'd use a vacuum secondary. I've had several and they are easy to tune and very trouble free. Just make sure and use a good fuel filter cause it don't take much to jam open a needle valve.