Results 1 to 8 of 8

Thread: bored out 4.3

  1. #1
    Join Date
    Mar 2008
    Location
    huntigton
    Posts
    48
    Rep Power
    0

    bored out 4.3

    anybody ever bored out the 4.3 , should be like a 350 right

  2. #2
    Join Date
    Mar 2008
    Location
    huntigton
    Posts
    48
    Rep Power
    0

    Re: bored out 4.3

    come on need some help 3rd post and still nothing

  3. #3
    Join Date
    Oct 2005
    Location
    The State for lovers
    Posts
    5,677
    Rep Power
    261213

    Re: bored out 4.3

    I believe Matt 4.3 TBI has... gonna give you the same benefits. Plus the 350 pistons work and aren't too expensive.
    Of all the roads you take in life, make sure some of them are dirt.



    1976 K5/1983 S10/1989 S10 BAJA Franken-truck: Click HERE for build thread

  4. #4
    Join Date
    Sep 2007
    Location
    Shelbyville, IN
    Age
    52
    Posts
    5,284
    Rep Power
    188483

    Re: bored out 4.3

    Quote Originally Posted by srmartinez View Post
    anybody ever bored out the 4.3 , should be like a 350 right
    Never have, but unless GM designed the cylinder walls too thin, you should be able to get it bored easily enough.
    1993 Corvette LT1 Coupe - Black with Silver GS Stripe (cat back exhaust and K&N filter)
    2001 Chevy Blazer ZR2 - Dark Blue (shackles, CAI, bars, dual exhaust, Exad stereo, Kickers, DUAL 300watt amp and 10" MTX sub)
    You can
    STFU about the 'virtues' of a world market. It's destroying our country, economy and way of life. Americans that buy asian cars are the worst terrorists to the American economy.
    Quote Originally Posted by user unknown
    My fake plants all died because I forgot to fake water them.

  5. #5
    Join Date
    Dec 2004
    Location
    TAMPA by way of MIAMI!!!
    Age
    41
    Posts
    5,602
    Rep Power
    656217

    Re: bored out 4.3

    I think they need to be treated like any SBC. The SyTy guys go .30 over on a regular basis but like any SBC more than .30 and you have to check the basics, core shift for the mains (crank) and for the cam too also check for excessive wear from a piston side loading on the cylinder wall. Over .30 consider sonic testing the cylinder walls. When I did the 383ci I watched the block get machined the ds rear cylinder was side loaded and literally when the LAST pass (not finish hone) was done the grooves came out.

  6. #6
    Join Date
    Aug 2007
    Location
    Downers Grove,IL.
    Posts
    2,033
    Rep Power
    24309

    Re: bored out 4.3

    There was a guy who appeared in an early-'80s Popular Hot Rodding issue that built a Small-block 6 (That's my nick-name for 'em!) for his econo-dragster, and he used 350 pistons. Even Z'd a tunnel-ram with a 1x4bbl for it.
    Go beyond the "Bolt-on"...

  7. #7
    Join Date
    Apr 2008
    Location
    Lincolnton, GA
    Age
    28
    Posts
    3,241
    Rep Power
    392944

    Re: bored out 4.3

    I have a 4.3 Bored .30 over got it from biglouieunderpressure you should try and pm or e-mail him you can find him in the for sale section under the turbo manifolds. He should be able to tell you what you need to know...
    2001 Xtreme 4.3L currently sitting in the yard killing grass. Motor replacement in due time.

    2000 Chevy S10 Blazer ZR2, my new DD, CAI and clear corner bumper lights. Some dents removed working on the rest.

  8. #8
    Join Date
    Mar 2008
    Location
    huntigton
    Posts
    48
    Rep Power
    0

    Re: bored out 4.3

    thanks all will do it and post

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •