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  #1 (permalink)  
Old 10-25-2008, 10:38 PM
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building a budget 454 with peanut heads

i came across an insane deal today and ended up picking up a 454 out of a 89 chevy dually truck along with the th400 and a mess of other parts (not using the turbo 400 but going to keep it for another project down the line)

well I got a 67 with a borg warner T10 4 speed trans with a tired 350 in it right now and I figure i'd do a budget build on the 454 and throw it in there...Right now the engine has the 360 casting peanut port heads. He said its got an edelbrock cam of some sort (i have yet to pull the #'s off to see the specs), but i'll probably end up running it.

it came with a holley strip dominator not installed.....but c'mon...i gotta get something else what would you guys reccomend?

so what should I do here. I want to keep this motor on the budget so I was thinking of running them and just building a low rpm torque monster that would be fun on the street and maybe slapping on nitrous that I have sitting in my garage for a 200 shot. Or should I go with the more conventional 049 type cylinder head? Am I just wasting my time with the peanut port heads?

This is my first big block i've ever put in anything or ran so some info would be great.

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Old 10-26-2008, 02:21 AM
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As with anything, there are exceptions to the rules, but with BBC, its pretty cut and dried. Peanut ports are for low RPM, period. Oval ports have a large range of street/strip capability, and rectangle ports are usually reserved for race.

Peanut ports are fine for a very low-rpm build that you don't want to make much HP. You can get a peanut port engine to make power, but with oval ports like 049 and 780s selling for next to nothing, why spend more to make less power from peanuts?
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Old 10-26-2008, 10:23 AM
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Get you some 049's. Around 510/510 inch lift cam. 800 cfm quadrajet, 1 3/4 inch headers, 2 1/2 inch dual exhaust with crossover. And a good aluminum weiand stealth dual plane intake. Easy 400 to 450 horse with around 450+ ft torque. Even using the stock pistons and the low 8 to 1 compression!
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Old 10-26-2008, 08:25 PM
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does anyone know what kind of pistons are in the 89 chevy dually truck 454 blocks? Trying to figure out what kind of compression i'll get if I go with an open chamber or closed chamber head?

I am picking up a set of 049's bare for $25 this week just because they are such a good deal, but don't know if I'm going to use them or not. I've found a bunch of heads around here for around 300-400 I could use but I want to try and figure out what the best way to go about it is depending on what piston those motors came with
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Old 10-26-2008, 08:37 PM
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I'm not absolutely sure, but I think most of those "peanut-port" heads had the same chamber volume as those 049's ... 113 cc.

Nasty Z28 BBC engine parts ID might have those specs by casting number?

Hmmm ... it looks like all they mention for that year range is "Open", and don't specify a cc measurement.

To clarify:
If the cc's are the same, then the compression ratio would be the same as it was stock.

As far as "what type of pistons?" ... I would assume just a standard cast piston with a dished top. Going to flat-tops would gain you a little compression.

Last edited by 66GMC; 10-26-2008 at 08:41 PM. Reason: clarification after re-reading
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Old 10-27-2008, 04:34 PM
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more than likely the pistons are a two valve relief with a small dish in the center. They are just a cast aluminum piece...nothing special.

If you put some 049's on there the chamber is 122cc's and your compression ratio will be around 8:1

781's have a 118cc chamber and the ratio would be around 8.2:1...depending on head gasket thickness.

If you order a set of reman heads make sure you are getting the 781's. I ordered a set from a shop on ebay and got 049's (they substituted at their discretion) which flow the same but have the slightly bigger chamber
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Old 10-11-2013, 04:28 PM
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car craft built up a cheap Junkyard 454 made 446 hp at 5900 rpm and over 500 ft lbs torque at 4900 rpm. For myself this will be my next build. Throttle response, better gas mileage, and a great street motor for saturday night, in a light camaro a tire smoking torque monster, just what I would want, no stall converter needed.These were unported totally stock heads, even the small stock valves were retained. With only a three angle valve job.
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Old 10-11-2013, 06:49 PM
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Let it go Arless!! Let it go!!
You're flogging a dead horse bringing up threads from the dead!!
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Old 10-11-2013, 07:44 PM
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folling all my quots

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Originally Posted by RWENUTS View Post
Let it go Arless!! Let it go!!
You're flogging a dead horse bringing up threads from the dead!!
You know you have me thinking you're following my quotes and finding fault with every one of them. Then I maybe wrong?!?!?
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Old 10-11-2013, 08:46 PM
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You're living in a fantasy world!!
You take computer generated motor builds and think they apply to the real world.
You don't back up any of your claims and then refute any of the extremely knowlegable answers to your wild hullicinations.
You can't win here!
Everybody sees your avatar on an old thread or any thread and think just like I did.
Oh no!! Here we go again!!
But on the plus side!!
You are entertaining!!
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Old 10-11-2013, 08:46 PM
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You did't say anything about how many miles were on this "truck engine". So, based on that, DO NOT feed it any N2O, or your "budget" will more than likely be "blown", pun intended. If you're not touching the short block, leave the peanuts on, and see how they work for you; you can swap them out after if you want more. If you're going to go into the engine, say ring and bearing it, and maybe a cam change, then small chamber oval ports. JMO. Butch/junior stocker.
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Old 10-11-2013, 08:49 PM
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The word "maybe"

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Originally Posted by arless View Post
You know you have me thinking you're following my quotes and finding fault with every one of them. Then I maybe wrong?!?!?
there is no maybe,I think you have shown enough proof now,,,you win,you are wrong
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Old 10-12-2013, 05:40 AM
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arless, main problem besides giving advice when you should be sitting there mute TAKING advice, is reviving old threads w/o adding anything material. This is just a waste of everyone's time.

Next time- before you hit the 'Submit Reply' button:
1. Make sure the thread is current
2. Make sure you're actually adding something that isn't a waste of time to those reading it
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  #14 (permalink)  
Old 10-12-2013, 09:27 AM
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2008???. Holy Horse Hockey!!!. He got me again to waste time reading.But on the other hand got give him credit for "trying" to research for answers.Now if only he would set back and listen and learn.
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