Thread: Vortec 350 with FI

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Vortec injection is the sucky-looking one with the spider tubes underneath the manifold.....history of leaking (eventually). With
that injection, you are pretty much stuck with the factory horsepower and torque.....you might gain a tad with the headers but the rest of the system is pretty much unchangeable (a cam might help or it might screw things up). There are a few folks who tweak these computers. I am a real fuel injection fan but for a hot rod, I would recommend going to a 2116 Edelbrock manifold with a holley carb.....and you have to buy a distributor since the vortec engine didnt have a "real" distributor....the thing that looks like a distributor is a rotor for the plug wires and a pickup. This way, you can trash the computer OR add a better injection system if you dont like carbs.

If changing to a carb, use a dual-plane, high-rise intake manifold such as the Edelbrock Performer RPM Vortec or the equivalent Weiand Stealth intake. You'll make more power and torque throughout the rpm range with this manifold than you will with a low-rise unit. The RPM was mis-named. It should have been called the Street Max. Think of it as a Z28 high-rise. This is my opinion only, but it is shared by others and backed up by dozens of DynoSim pulls.