Any 318 Performance tips?

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I say have a little faith and respect for your friend who built the motor and put
it in like it is. I'm sure it will run great. You didn't mention which Weiand, but
whatever you got will do. Make an effort to match head ports to manifold.
Block heat passage. Use heat spacer under carb. Speaking of carb- 650
(dbl pump?), or 1850 600 cfm vac secondary? If vacuum, use lightest spring.
Set up distributor for quick advance and time for 36-38° total advance. It will
be a fun car with that 4 spd.
 
68383GTS; your gonna like it. It'll not be a smoking fire frier but will motivate the car well.
In my '74 Duster, with stock heads, I slipped in a split duration Crane (272/284-.454/.480-112) with Cranes recommended springs. Stock converter & 3.21's. The 1979, 318 engine (long block) was a otherwise dead stock. The engine motivated the car well. Traction limited at the track. It still ran a 15.14 with a mild tune.

Other parts were a LD4B, 600 Holley, Hooker headers into a 2-1/2 Jegs exhaust.
It doesn't take much to wake up a 318 even with low compression.
 
I think the gears will give you the most seat of the pants bang for the buck.I,d run what you got.
 
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