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Road Race Engine Build

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  • Road Race Engine Build

    Hey guys,

    After a rather rough weekend for our race car as seen below (Heroic Fix ?winner?) the team decided to build a engine over the winter:

    I'm hoping to combine the best of 3 engines that have had mishaps into a reliable road race motor that can shake off a little over-revving as well as our first motor, not drink oil like our second and third motors, and also make a little more power.

    From the ashes of the following three motors I'll be stealing most of the parts:

    03 Alero 3400 RIP - Held up admirably to 7 years of racing but water and winter cracked the block, now we antifreeze over the winter instead of just draining
    04 Rendezvous 3400 - Leaked 2 quarts of oil and then rod knock, hoping the block is OK
    06 Impala 3500 LX9 - Street only but a crappy coolant hose blew and the subsequent overheating scored cylinder walls, has the steel crank

    So I'm going to layout my basic plan first and then get into details later. Bottom to top.

    Oil Pan from the 03 Alero - Not a big deal but I know it works and wasn't cut too far like we did another time
    Crank and Rods from the 06 Impala - I know the iron crank is fine but I've got the steel one and it's just beefier, will have to clearance the block for PM rods - ARP rod bolts
    Block from 04 Rendezvous - Hoping it doesn't need an overbore, might go LX9 if it does, will clearance windage tray to work with ARP Main Studs if I can find extra M11 nuts
    New Pistons and Rings from 3.4L 94 camaro - I know I'll have to cut new valve pockets and I'll probably take a little more out to get CR down to around 11.25:1 with the
    Cylinder Heads and Intakes from 06 Impala - I'm going to have to Heli-coil these but the extra flow will be nice and bring the CR down some, also looking for 10mm style rockers
    Cam will be the WOT-Tech Street/Strip Cam - Should be a decent match, pre 99 timing chain, and balancer
    Valve Springs will be 26925 with Ti keepers - I got a deal on the keepers so going this way
    Microsquirt ECU and LC2 Wideband - I need it to be right, tested, and withstand the elements so no board soldering this time around
    Recycled Headers - but with v-bands and balance of the exhaust new

    It's a little early to be introducing this but I'm hoping this will be a decent record that I can look back on and also maybe liven up the board a little bit.



  • #2
    Sounds like a plan! Almost the same combo my friend and I have been considering for his car!
    1999 Olds Alero 2.4 to 3500 swap (running). totaled by a honda
    1992 lumina 4 door 3500 3spd auto 15.020 @93.5 mph
    1984 Cavalier type 10 hatch 3100 5spd!!!
    14.96@91.47 in the 1/4
    9.63@74.36 in the 1/8th
    14.30 on slicks! scrapped due to rust!


    • #3

      I got the block stripped down and I noticed something I don't remember from previous tear-downs. It looks like GM applied a paint/coating (maybe similar to Glyptol) to the block in the timing cover area and also under the oil filter in the kidney shaped area. Some of it had started to flake of in the latter which is a little concerning. I'm planning to chip the rest of the paint out of the kidney shaped area but may leave the timing chain area alone. Has anyone had a problem with this coating and/or know why it was applied only to these areas?



      • #4
        I have no experience with gyptol, but I really want to hit 24hours of lemons! it's on the bucket list for sure! I'll be following this for sure! where are you competing?
        Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.

        I get bummed out every time I type "titties" in the search bar and nothing pops up....

        Built not bought, because bolt-ons don't...


        • #5
          Glyptol is an electric motor armature paint that is used by some engine builders to coat certain parts of a cast iron block to aid in oil control/return. I've seen reputable engine builders argue both for and against it but everyone agrees that if it's applied to a less than optimally prepped surface the result isn't pretty. GM would have a unique opportunity at perfect prep knowing all the details of the block's history.

          We've been doing the New England races for just about 10 years. We made it to a couple Mid Atlantic races in the first couple years but we're not in our 20s anymore and the tow home/go to work the next day thing doesn't work the way it used to. I really can't say enough good things about LeMons- the atmosphere is just unlike anything else. It's choose your own competitive scale during the day and a party with all the best friends you didn't know you had at night. Highly recommend!