Tbi swap build thread

[rfmaster]

Originally Posted by 408cuda

Forgot to ask. I have to relocate the knock sensor for header clearance. Is the fuel pump provision acceptable even though it's not machined or open on this block? Don't see anywhere else it will fit.

Thanks!

A typical TBI system uses electrical fuel pump, which GM mounted in tank or alternatively, inline electrical fuel pump can be used instead. Typical system EFI system requires three fuel lines between tank and engine bay.
Supply line - 3/8" is used by Fuel Pump (FP) to supply fuel to TBI inlet. Please make sure that you have FP that can supply a minimum of 20 PSI. Do not go to crazy with fuel pressure as excess fuel will be bypassed and returned back to the gas tank via return line 5/16" or 3/8". Excessive fuel pump pressure tends to increase fuel temperature, which is not good - this will increase fuel vapor pressure. Third fuel line is connected to charcoal canister that connects to TBI (1/4") line.

Main DC power distribution.



//RF