Originally Posted by Big Dave
Unless it is a billet steel custom ground can (and few of those engines retain a stock mechanical fuel pump) you use a stock fuel pump rod made out of mild steel to ride on your cast iron cam elliptic. Since your engine was out of an EFI truck it won't have the rod installed (nor a bushing or a machined hole in the crank to support a manual trans). The truck it came out of had a low pressure electric fuel pump in the tank (17 psi for TBI; 48 psi for port injection).
That's a high pressure fuel pump, Dave.
Low pressure pump is the type like Alan mentioned. 5-7 psi.