I have a 74 Maverick 302 with a 2v carb. I want to swap the 2v carb and manifold for a 4v, with a dual plane manifold. Can I do the swap and retain the original cam, lifters & pushrods?
too large an intake and carb can cause low speed power loss(first 500-800 hundred rpm or so). So, if you plan on staying with a stock.. or upgrading to a very small RV style cam in the future?.. stay with the smaller plenum design intakes to maintian off-idle torque and response. If you do it right.. tuning included.. there will be gains everywhere in the powerband. 600 vacuum secondary carb would be the max size to go with here as well(which will still require a slightly stiffer secondary diaphram spring because the cam will never use the airflow anyways). And makes sure you adress the pitifully flowing stock type exhaust while you're at it here(at least a muffler swap).. or much of the intake/carb swaps potential gain will be nullified.. especially when you rev it a bit higher to fly on the onramps.
