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Big block install question

Discussion in 'The Garage' started by Big'nBadK5, Aug 6, 2003.

  1. Big'nBadK5

    Big'nBadK5 Registered Member

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    So today i'm bolting up the headers to the BBC i just put in (along with a 465 and 205) and i notice that the fuel pump i put in the was bent (the inlet) and holding the motor up. so i pull it out and was going to install the old fuel pump off my 305 and i was just wondering if it'll work, it looks to me like the arm is smaller on the 305 pump and it's smaller on the bottom. thanks. /forums/images/graemlins/thumb.gif
     
  2. Yukon Jack

    Yukon Jack 1/2 ton status

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    My memory and checking with my Jeg's catalog shows they are different.
     
  3. MOABDADC22

    MOABDADC22 1/2 ton status

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    I used a 350 fuel pump on my 454 in a pinch. It worked until I put the correct one on.
     
  4. diesel4me

    diesel4me 1 ton status Premium Member

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    No!! /forums/images/graemlins/eek.gif Dont do it! /forums/images/graemlins/eek.gifThe small block pump will bolt on,and work for a short time,then it will crack near the flange and it usually separates from the engine and lets oil leak all over,and it quits right there /forums/images/graemlins/eek.giftill you put the big block pump on.I know this because I had a 454 in a truck and tried the smallblock pump and it lasted long enough to get me 5 miles from home,and I walked to the autozone two miles away and bought an electric pump and a block off plate for less than 30 bucks and ended that problem--right on the side of the road!. /forums/images/graemlins/grin.gifI have sold many fuel pumps in my parts counter days,and many people werent sure of the engine size(they'd say "its a 400",but they didnt know if it was the 402 big block or the 400 small block)and when they came back pissed with a broken in half pump I'd have to sell them the big block one(which does look nearly identical of course,but IS different)and then usually end up having a fight with the customer and my boss over it /forums/images/graemlins/frown.gif /forums/images/graemlins/angryfire.gif....glad I dont do that anymore! /forums/images/graemlins/grin.gif
     

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