mechanical fuel pump question

[Little84gmc]

does the TBI 2.8 have the opening on the side of the block for a mechanical fuel pump? i'm thinking of replaceing my 2.8 with a low mileage one but it's TBI and mine is carbed.

[87wildside]

ummmmmm,














































I don't know so bumppedy bump bump

[quartermilerun]

Some do I have an 84 that does. The motor that I bought and was told it was an 84 did not. A short while later i wound up putting the moto I bought into an 86 and during the swap over of intake and all of that i found the original engine from the 86 had the fuel pump opening it is covered by the fuel filter bracket and capped off with a freeze plug. So ypu will just have to look and good luck.

[neo71665]

Any block 1985 and before has the mech fuel pump boss.

Any block 1986 and after (everything with fuel injection) does not have it.

You can easily run a newer block with an electrical fuel pump. The newer blocks have bigger mains and the fuel injection heads got bigger valves.

[Tink]

X2 on the electric fuel pump. We are putting a carbed 4.3L in to replace a carbed 2.8L, but using a newer 4.3L block, so it will have an electric fuel pump.