Recent content by Cutlassefi

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    OLDS Possible olds 425 engine purchase

    I’ve made 540 hp on a 463 big block with this same combination. The Plenum on the performer intake is actually quite large and has plenty of capacity. Plus he’ll need hood clearance on the later model G body. In addition if I was going to use any single plane at all I’d probably prefer the...
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    OLDS Possible olds 425 engine purchase

    I'll try to answer the most recent questions; My heads are $1950.00 plus the ride, any spring and flow around [email protected]. Bernards are $2275.00 with a roller spring and flow around 240 per his Ebay page. In order to make 500 hp I'd use this head, a roller cam, Full roller rockers, Edelbrock...
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    OLDS Possible olds 425 engine purchase

    Again lots of misinformation here. You can’t use the .921 roller lifter in a 425 block, the lifter bosses aren’t tall enough to accommodate the lifter. Secondly, it won’t take 5k more to go from 400 to 500 hp. You can make up that difference with cylinder head, cam and Carb. If you want to...
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    OLDS Possible olds 425 engine purchase

    Lots of inaccurate info here except from a few. Let me correct the myths. 1) Don't bother with the restrictors, they don't work and waste of money 2) The only reason a 425 will "rev higher" than a 455 is because, apples to apples, with the same intake, cam, and heads, the 455 will run out of...
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    1971 Oldsmobile Rocket (?) Engine Rebuild

    My business name is Remmel Auto & Marine. I'll have a Facebook page shortly but I've been in business for over 10 years. This is a sideline business for me but it's been very rewarding helping the Olds community. One correction on something someone said. Iron heads aren't necessarily lift...
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    1971 Oldsmobile Rocket (?) Engine Rebuild

    Well my cranks should be done in the next couple of weeks. The first batch are 5140 forged 4.00" stroke, second batch will be 5140 forged 3.875" for a 414ci build with a 4.125 bore. Rods and pistons will be off the shelf items. Throw a set of bb heads on it and you'll be in the 450hp...
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    1971 Oldsmobile Rocket (?) Engine Rebuild

    Thanks! Thanks! I hope I can be of some help!
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    1971 Oldsmobile Rocket (?) Engine Rebuild

    Hello, I am new here. I will post my info in the new user section but happened to come across this thread. I offer Olds engine building and dyno services. I'm in Central Florida so I'm not that far from you I believe. I agree with most of what's been written to this point with a few exceptions...
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