305 small chevy 650 edlebrock or 750 quadra jet?

Question

have at it folks. which and why?

Answer 1

For a stock 305, go with a 600 cfm Quad or Holley---better air flow velocity and I personally would use a spreadbore for good throttle response at low speeds and good economy yet still has the larger secondary bores for WOT use. Shouldn't need a double pumper or larger carb unless motor is built up ---cam, headers, intake,etc. Vacuum secondaries are more efficient and easier in my opinion in tuning and adjusting for load. Holley or Edelbrock are easier to get parts for to adjust or tinker with.
http://www.carcraft.com/techarticles/selecting_right_carb/
http://www.popularhotrodding.com/tech/0503phr_carburetor_tech_how_to/

Answer 2

nicely, i assume whilst your call is Dodgeman you're able to be forgiven once you're incorrect approximately Chevy engines. The 305 shares an identical STROKE, 3.40 8", via fact the 350 Chevy despite the fact that it has a plenty smaller 3.736 bore. via that's relatively skinny cylinder partitions the 305 won't be in a position of be bored to the 4.0 of the 350. additionally, the 305 block can not settle for the better 2.02 or perhaps the a million.ninety 8 valves got here across interior the better bore heads without notching the block. yet another subject with the 305 heads have been there relatively small 58cc combustion chambers. whilst bolted onto of a 4.0 block with .040 head gaskets and flattop pistons your compression ratio hits around 11.7 to a million. To plenty for low-priced gas and occasional pass valves.

Answer 3

Stay away from the Quadra junk! Any thing in a dual pump would give you and adiquate horsepower increace. But a good carb is only part of the engines breathing treatment, when you are getting more fuel than normal, you should think of intake, ported vavles, and headers, so the engine will be able to breath in and out all the extra air and fuel.

Answer 4

If the 305 is close to stock..... no radical race cam, etc....... then the 650 would be the better choice. It will give you better throttle response and be easy to tune, and give you a bit better gas mileage. Too much carburetor can kill the performance on a stock motor. Actually a 570-600cfm holley would be a better choice.

Answer 5

you can use either one just make sure ur motor has some performance items for a bigger carb. If not and u want to use the 750 u can jet it to the alltitude.

Answer 6

street or strip? any aftermarket mods to the engine?