73’ 318 dies under accel with new intake & carb
Willing to bet you put a large port aftermarket 4 bbl intake on to the 318 small port heads.
Doing so creates a step from the intake runner to the head port causing turbulence right there.
Stock 318 low end torque engines benefit from having smooth port flow into the heads.
Ideal intake is the LD4B.
I often do the 2 to 4 carb adapters on the stock 318s because it utilizes the correct size intake runners that already match the intake ports on the heads. The stock dual plane intakes are even better yet.
Correct size runners on the 4 barrel intake manifolds are hard to come by for the 318s, that is why I do the alternate method. Nice not having to tear the manifold off a stock engine if you are staying with the stock cam.
1406 carbs run great on stock 318s. Might want to pull one metering rod out and see what the number on it is. 7543 ???
Can check the metering rod springs too.
Happy Motoring . . .
Willing to bet you put a large port aftermarket 4 bbl intake on to the 318 small port heads.
Doing so creates a step from the intake runner to the head port causing turbulence right there.
Stock 318 low end torque engines benefit from having smooth port flow into the heads.
Ideal intake is the LD4B.
I often do the 2 to 4 carb adapters on the stock 318s because it utilizes the correct size intake runners that already match the intake ports on the heads. The stock dual plane intakes are even better yet.
Correct size runners on the 4 barrel intake manifolds are hard to come by for the 318s, that is why I do the alternate method. Nice not having to tear the manifold off a stock engine if you are staying with the stock cam.
1406 carbs run great on stock 318s. Might want to pull one metering rod out and see what the number on it is. 7543 ???
Can check the metering rod springs too.
Happy Motoring . . .