Pontiac GTO Forum - View Profile: Wickedgoat

Wickedgoat Wickedgoat is offline

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  1. PontiacJim
    06-22-2017 06:30 PM - permalink
    Saw your update. I would go with a 400CI and use the Butler 461CI rotating assemble. You want to make sure that any 400 engine/block you select is 1974 or earlier. Later 1975 400 blocks are cast thinner in the main web area.

    The Butler Kit is your best bet in pricing as opposed to buying parts individually. It is a complete kit. However, I would purchase a new crank balancer and a new steel flywheel. This would mean re-balancing everything. With the 461/467CI kit you get more cubes from the longer stroke crank which means more torque and HP at lower RPM's just like the 455. You also get the advantage of a smaller main journal vs the bigger 455. With forged rods/pistons you can RPM more like the 400.

    BUT, before you consider this kit, you want to know what heads you are using as you need to know the cc's of the combustion chambers. Screw-in studs are prefered. You want to shoot for about a 9-9.3 compression for pump gas. Butler can then recommend the piston crown.
  2. PontiacJim
    01-19-2017 07:53 PM - permalink
    Any time. Many options in building an engine. Going big can sometimes cost way more because you have to also include the added expenses in beefing up the drive line and additional chassis work. I think keeping the engine under 400hp is best for a street engine you can drive and going above puts you into the local Friday night cruiser or strip car as it becomes too much hp for longer trips or extended car show distances. So you just need to decide the purpose of your car.

  About Me

  • About Wickedgoat
    Cape Cod, Montana, Tucson
    My Car (GTO or other)
    1964 GTO
    Grenadier Red, medium red interior and factory a/c
    My drag strip stats;
    Not running, just a dream at this point
    My Interest
    Flyfishing, skiing, and hiking
    55 years old I spent all my money on big boobs, V8's, and fishing tackle. The rest I wasted.
  • Signature
    "Never, ever, scratch a tiger's balls with a wire brush."


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  • Last Activity: 03-24-2018 07:48 PM
  • Join Date: 11-01-2016


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09:34 AM - BearGFR quoted Wickedgoat in post
09:53 AM - Wickedgoat quoted 1964SS in post New Project, 1964 GTO
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06:02 PM - PontiacJim quoted Wickedgoat in post New Member 1964 GTO owner
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06:03 PM - PontiacJim quoted Wickedgoat in post HMI Stage III
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05:50 AM - PontiacJim quoted Wickedgoat in post HMI Stage III
Is this a good choice for my '6...
09:41 AM - PontiacJim quoted Wickedgoat in post 64 GTO project.
Well, we can be friends. I have...
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