What kind of Head do I need for a 350 TBI?
Another good reasonably priced set of heads that will work nicely without special intakes on a TBI motor is a set of Summit Racing aluminum heads. Great flow number and stock TBI or aftermarket TBI intakes will bolt right on saving you some money. 50 state legal and better flow numbers than vortec heads.
What should the air flow be on a 350 TBI?
On the average 350, I like a intake runner in the 165-180cc range and I like my air flow at.500″ lift to be at least the 225cfm that a vortec head flows. Stock TBI head flows around 175cfm.
What’s the lift of a 193 TBI head?
It’ll help torque in the low-midrange and what happens up top….. it won’t matter because those heads don’t flow enough to support high RPM operation. They are definitely sub-5000 RPM heads. The lift is limited to about .450″ before the retainers hit the guide seals, so you’ll be OK in that respect. About the only thing you can do is measure them.
Can you change the throttle body on a 350 TBI?
Modify the throttle body. This one pretty cheap but does require removing the throttle body. UTIMATE MODS . Stock 42mm TBI units flow around 450cfm which if you look at http://www.carburetion.com/calc.asp a stock 350 even with a cam upgrade to increase the powerband to 5500 rpms isn’t going to use much if any more than that stock throttle body.
Another good reasonably priced set of heads that will work nicely without special intakes on a TBI motor is a set of Summit Racing aluminum heads. Great flow number and stock TBI or aftermarket TBI intakes will bolt right on saving you some money. 50 state legal and better flow numbers than vortec heads.
On the average 350, I like a intake runner in the 165-180cc range and I like my air flow at.500″ lift to be at least the 225cfm that a vortec head flows. Stock TBI head flows around 175cfm.
It’ll help torque in the low-midrange and what happens up top….. it won’t matter because those heads don’t flow enough to support high RPM operation. They are definitely sub-5000 RPM heads. The lift is limited to about .450″ before the retainers hit the guide seals, so you’ll be OK in that respect. About the only thing you can do is measure them.
Modify the throttle body. This one pretty cheap but does require removing the throttle body. UTIMATE MODS . Stock 42mm TBI units flow around 450cfm which if you look at http://www.carburetion.com/calc.asp a stock 350 even with a cam upgrade to increase the powerband to 5500 rpms isn’t going to use much if any more than that stock throttle body.