Hey im new here but have read a few threads on here for a minute now. I have a 91 z28 convertible with a 700r4 transmission with the stock 305 in it my car is not running right now cause i burnt the fuel pump out a bit ago back but im at the point do i want to rebuild my 305 myself for a little under a $1,000 or buy a used l98 350 and rebuild the with a high performance rebuild kit for no more then $3000 i would love some feed back on this. This is the first car ive paid for myself so shes my baby but i own two classics already that i was given. Also i live in california so everything i do have to be fully legal to have. Also im a student with not to much cash to do alot at this point probably $6000 total to do this work on her and the fuel pump with be taking some of the $6000 away too and fyi im doing this work myself to save on cost and labor i do know what im doing having grown up in a auto shop my whole life while being taught by my uncle who's a cert. master mechanic.


so plz give me some help oh and the rebuild kit is like 800 bucks for the 350 and 600 for the 305 i have

 

First off:

Doesn't matter what you do, you'd have to fix the fuel pump.

So leave that COMPLETELY out of the equation.

Now: assume the fuel pump is fixed, and the car is back on the road.

Given that new state of affairs, why do you want to rebuild ANYTHING?

 

well the reason of why i want to rebuild the engine is cause my head gaskets are blown and i dont know how far the damage had became and i think down the road and to save some money going the 350 way would be best and since the 350 id be getting is used id rather rebuild it so its all new inside it

 

And you know this .... how?

How did they go bad while the fuel pump wasn't working?

 

The head gaskets were blown while the car was running I bought the car running and it was blowing white smoke the whole time I burnt the fuel pump out a while after I got the car but im dropping a l98 in it now

 

If you plan to make it a daily driver, fix the fuel pump, rebuild the 305, you may not be in it that deep. If it's just a head gasket, it's no big deal, replace it and keep driving it. Unless you are just hell bent on rebuilding it for fun. Nothing wrong with a 305 runs just fine, gets good mileage and still puts out plenty of power

IMO.

 

Im already putting a 350 in and getting rid of the 305 with it still being a daily driver