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  • which one

    Ok I decide that I am going to build a motor for my Beretta but I am not sure which one to start with If I get a 90-93 3.1 could I put the flat top pistons for a 2.8 that summit has. I know they have the same bore but are the wrist pins in the same place also would like to get a cam mill heads what should I do for the top end which heads would be the best.

  • #2
    the wrist pin is in a different location with relation to the top. It won't work. However you can use the 3.1 pistons meant for the iron headed engines (Camaro etc) they're not flat top but less dish area than your stockers, if high compression is what you're looking for.
    Brian

    '95 Cutlass Supreme- "The Rig"
    3400 SFI V6, 4T60e
    Comp Cam grind, LS6 valve springs, OBD2 swap, Tuned
    2.5" DP/ 2.5" dual exh/ Magnaflow Cat/ crap mufflers/ 3500 Intake manifold/ 65mm TB
    TGP steering Rack/ 34mm Sway Bar/Vert STB/ KYB GR2's

    '08 Chevy Trailblazer SWB 1LT "Smart Package"- LH6 5.3L V8/4L60e, A4WD

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    • #3
      I am looking to raise compression I want a motor with good streetablty but that will run mid to low 16s in the ¼ mile I plan on doing a 5 speed swap at the same time

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      • #4
        Originally posted by MATT2007 View Post
        I am looking to raise compression I want a motor with good streetablty but that will run mid to low 16s in the ¼ mile I plan on doing a 5 speed swap at the same time
        Bone stock 3.1 with a 5 speed should get you high 15s with ease.

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        • #5
          i was gettin 16.42s in my 88 beretta 2.8 5spd with exhaust and suspension
          sigpic
          88 Beretta CL- 13.641@102.76mph (rwd LS1/t56 conversion in progress)

          77 Celica GT- 3400/3500 swap in progress (engine from the beretta)

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          • #6
            ok so I decied what i am going to do I am able to get a 92 lumina 3.1 motor for cheap so I am going to use pistions with less dish than the stock ones crane cam not sure which one yet CAI and dual exhust

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