Lol, you and that predator
Competent 451 engine builder in Portland Or
- Thread starter 67barracudabob
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Every time the cubic inch thing comes up, I think of that 655 ci beast
Dcuda69
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This is what I did. Used OOTB Edddy 84cc heads with springs to match a smallish street solid roller. I am very happy with the outcome. It runs on pump swill, idles at 900 rpm, has tons of low end ,pulls hard through the middle, spins up over 6000 easily. In my 69 B'cuda with CPPA headers, 4 spd and 3:73 rear it's lots of fun!!
Yeah they're great, if I ever go bigger cubic inch I'll drop some compression and run it on pump crap. I'm running tf 240s with 64.5 chambers (milled .086)
67barracudabob
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Good . thank you
67barracudabob
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Halfafish , I would like to thank you for the suggestion at somers machine shop. I went and talked to him for about an hour. The conversation seemed to be productive.one thing that was a little surprising was he didn't like 440 source heads they leaked water.
Glad you got to talk to them - they are great to work with. They built a few slants for me and when it comes time to do the 340 I'll be taking it there.
Tom’s Performance Machine in Vancouver. He’s buried so he won’t just bang it out, but he’s worth the wait.
JDMopar
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Did he say where/how they leaked water? I know a few people that have them and never heard them complain. Just curious and trying to learn.
autoxcuda
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Honestly, if you're aiming to make power easier then yes, there's plenty to be made with a 240.470 with 240 head? I read in this thread you needed 270's at anything above 451.
I just ported mine just shy of a 270 because my engine was running out of steam 5800 was peak power on my particular build.
Portland Engine Rebuilders can build anything you want but I don't think they have their dyno working yet. Gray's Automotive in McMinnville has a lot of experience with Mopar stroker engines. They have built all of my engines for the last 30 years and I've built a lot of them. Gray's has an engine dyno which I help run. The dyno is a good tool for verification, especially on a new rebuild.
These days I'd probably recommend a 470 over a 451 just because of parts availability but either can be built. The low deck 512 is also a good engine to build but they do tend to have a little more piston slap. Some customers don't like the noise of cold start piston slap.
The best heads to use these days are TF240 heads. The Edelbrock RPM heads are good, but not really a great value since the prices have gone up.
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