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big block install 60-66 chevy truck

Discussion in 'The Hokey Ass Message Board' started by skysoldier173rd, May 29, 2010.

  1. skysoldier173rd
    Joined: Jan 8, 2010
    Posts: 18

    from michigan

    Wondering how difficult it would be to put a bbc in one of this generation of trucks. Got a nice bbc and might pick up one of these trucks to put it in. Just wondering if firewall needs recessing, or if there are other issues? Anyone been there and done that?
    1Nimrod likes this.
  2. papajohn
    Joined: Nov 2, 2006
    Posts: 886


    I haven't done it, but I have a '63 panel truck and it looks like there is all kinds of room! Should be an easy fit.
    Deuces likes this.
  3. Astrochimp
    Joined: Sep 15, 2009
    Posts: 191

    from NE Mo.

  4. R Pope
    Joined: Jan 23, 2006
    Posts: 3,309

    R Pope

    Pretty much a bolt-in, lots of room. Small block mounts work.
    Deuces likes this.

  5. 40FORDPU
    Joined: Mar 15, 2009
    Posts: 3,124

    from Yelm, Wa
    1. Northwest HAMBers

    I agree, I installed a BB in my '65 years ago. No modifications were needed to the fire wall, I used the SB mounts, but had to modify them slightly (may have been the style of headers I used). I also used the stock radiator. Nice swap, Good luck.
    Deuces likes this.
  6. 1941ihkb5
    Joined: Feb 19, 2009
    Posts: 338


    Dad and I stuffed a 454 in my 65 back in the 80's. Originily a six banger. Plenty of room, I remember having the drive shaft shortened, We made our own mounts. The biggest pita was we did the swap in feburary out side.
    Deuces likes this.
  7. 63c10
    Joined: Mar 27, 2010
    Posts: 32

    from kentucky

    Bolt-in swap, shouldn't have any problems. Header fit would be my only concern. Good luck, and post some pics when you get started!
    Deuces likes this.
  8. piche582
    Joined: May 12, 2005
    Posts: 247

    from Sonora, Ca

    Did one in my friends 64. Did have to massage the frame a little for headers to fit & we replaced a good portion of the firewall as his valvecovers were hitting & it made them a bitch to get off.
    Deuces likes this.
  9. Pinball Wizard
    Joined: Jul 25, 2008
    Posts: 93

    Pinball Wizard

    Here is my 454 in my 64 C10.. Its mounted forward of the stock small block location, so the tall valve covers clear the firewall. Its on stock rubber mounts, the frame mounts are stock small block, slightly clearanced for the headers. Headers are tri y's for a 70's C10. Had to clearance the frame about 1/8 inch and ding one tube slightly. I've seen them in the stock small block location with stock type valve covers and its a tight fit.


    Attached Files:

    • 454.jpg
      File size:
      158.4 KB
  10. tom64c10
    Joined: May 7, 2016
    Posts: 1


    What headers did you use?
  11. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    from La puente

    If you get the big block engine stands from a 1968 chevy truck,they're taller and you will have little more clearance for headers.The down side to using big block stands is the rubber for them is expensive( around $200).I welded a heavy duty washer(with a smaller hole) to mine so i could use the cheap small block $10 motor mounts.
    Deuces likes this.
  12. hedg12
    Joined: Feb 1, 2009
    Posts: 46


    My brother bolted a 454 in his 63 back in the day. Small block mounts and (I think) 73-87 pickup headers - might have been Chevelle headers, can't remember. Don't think any firewall mods were necessary. Plenty of room
    Deuces likes this.
  13. Pinball Wizard
    Joined: Jul 25, 2008
    Posts: 93

    Pinball Wizard

    I bought them used, so not 100%, but I believe they are Dougs D303Y-R

    Deuces likes this.
  14. We did those swaps all the time, same mounts, maybe a different top hose water outlet but an easy swap. On one BBC we just used flex pipe for the exhaust.
  15. Larry T
    Joined: Nov 24, 2004
    Posts: 7,668

    Larry T

    If you use an automatic, you can move the engine forward a little and not have to rework the firewall. If you want to run a clutch, you have to leave the engine in the original location for the clutch linkage to work. If you leave the engine in the original location, you have to notch the firewall for valve cover clearance. Passenger side takes a pretty big notch to clear. I don't remember what I had to do on the drivers side, so it probably wasn't much.
  16. I put a 427 in a 63 42 years ago. took a BFH to the firewall and made clearance for valve covers. other wise it was a bolt in.
    Deuces likes this.
  17. Basshawk
    Joined: Aug 26, 2021
    Posts: 6


    Put a 427 in mine. Always runs hot (over 200). Anyone that has done this swap have similar issue?
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 49,561


    You could cut out part of the inner fenders, put a bigass cross flow radiator in there. I mean big. Tall and wide.
    Deuces likes this.
  19. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,208

    from oregon

    And while your at it you could cut out that bigass ugly factory core support.

    Deuces likes this.
  20. squirrel
    Joined: Sep 23, 2004
    Posts: 49,561


    but you want a bigger radiator than shown, for a big block. Like a yard wide.
    Deuces likes this.
  21. Pinball Wizard
    Joined: Jul 25, 2008
    Posts: 93

    Pinball Wizard

    This is the same truck I posted above, new paint. Radiator is 40 inches wide. Don't have any better pics, truck is apart again. 20151002_165111.jpg
    squirrel likes this.
  22. X-cpe
    Joined: Mar 9, 2018
    Posts: 1,223


    I sub-framed my '57. 454. Steering box and radiator want the same space. What I found at the Radiator Warehouse was, if I remember, a down flow Mopar radiator. Haven't fired it yet. (30 years and counting)

    Model - 889-4
    4 core
    core size - 26"w X 18" h
    O/A - 30"w X 23"h (not including the filler neck and cap)
    mounting flanges on the front sides
    Shroud mounting flanges on the engine side
    top and bottom outlet the right sizes and in the right place
    Last edited: Oct 10, 2021

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