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Rebuild or crate???

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Old Jul 17, 2006 | 12:53 AM
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Default Rebuild or crate???

After pulling my missmatch big block apart I'm at a point where I need to make a huge decision.
The block is a late 89 truck 454 with a vette 396/427 steel crank and original 427 worn cam. Internal components put it at 427 ci.
After pulling the original iron 427 heads I see that the pistons were bored .060 thousands over putting the displacement over 427. I need to replace all internals...crank, cam, lifters, pistons ect. Will need to replace valves, valve job, springs ect. Will need new intake, waterpump, oil pump, distributor and all bolts and gaskets.
Would it be cheaper and more benneficial to just get a crate engine?? and leave this block for my slow forged twin turbo project to be ready in 20 yrs and have fun with the crate??
Any good deals out there on a big block crate? Would like over 400hp.
D&J Machine & Performance Engines on ebay seem like they make a good deal 454 with 500hp for a decent price. Any feedback from you guys?
I can take a decent hit on my bank but would like to keep the budget under 5k if I can.
Any opinions? rebuild or crate?
Any good deals, need to make a decision very soon before I send my current block to the machine shop.
Thanks
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
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Old Jul 17, 2006 | 01:11 AM
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Get your old block rebuilt close to home.
I also live in NJ and had previously purchased a "crate" engine on ebay from a builder in arizona. I thought I was getting a good deal. My car has spent more time in the shop than on the road. The motor was NFG. I had a hard time resolving the issue because of the distances involved. Stay close to home. If you want a local ebay seller, look up Victory engines, they are in the NJ - PA. area and their long blocks start $$$ below anything else on ebay. I have no personal experience with them, but if something should go wrong, they are nearby and you would be able to follow up more easily.
My .02
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Old Jul 17, 2006 | 01:27 AM
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The block can't be bored safely over .060...scrap if it needs a bore.

Suggestion...get a 502 bare block and use your 3.76" stroke crank, big bore, short stroke, will make a hell of a screamer. That said, you can use your existing rods and JE makes pistons for this stroke, bore combo.
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Old Jul 17, 2006 | 06:17 AM
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Default Ebay???

How many ebay horror stories do we have to hear?

It's like buying shoes in a catalogue. The picture was really nice but when I got them they didnt fit....

http://www.gmgoodwrench.com/perfpartsjsp/home.jsp

I am happy with my crate motor. I have put over 15,000 miles on it so far.
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Old Jul 17, 2006 | 09:49 AM
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OK OK, EBAY...what is that? no longer exists in my realm of choices.
Just looking for the best bang for my buck...
Where's the best place to look for bare blocks, engine parts, cranks, cams ect? Looking for a company that stands behind their product and doesn't make me sell my body to pay for parts. Although that could be fun.
Any brands worth recommending? Scat? Summit brand any good?
Any engine shops worth looking into around Jersey that you can personally vouch for? looking for advice in planning the rebuild and machining.
Appreciate the advice. This is my first engine rebuild on my own.
I'll buy you all some beers the first time it gets on the road...gotta get'r done...I'm thirsty
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Old Jul 17, 2006 | 10:02 AM
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If you go with a crate motor get it direct from GM or one of there dealers. I wouldn't try to save a few $$ from ebay. stay local with your purchase and you will have a face to deal with if anything goes wrong. just my .02
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Old Jul 17, 2006 | 10:26 AM
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Originally Posted by crf311
If you go with a crate motor get it direct from GM or one of there dealers.

i agree how can you go wrong with GM crate motor....all the engineering is done by people who actually have to stand by the product and offer a warranty.....and its designed by engineers
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Old Jul 17, 2006 | 10:43 AM
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I am with the crate crowd on this one.

GM built and warrantied.

Guaranteed reliability. Not a shady eBay'er or possibly crooked machine shop.
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Old Jul 17, 2006 | 01:27 PM
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Those GM zz454 sure are nice but $$$.
They're forged which is a + and waranty is a +.
Hummmm........
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Old Jul 17, 2006 | 04:09 PM
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Where are you located? I may be able to offer you some leads.
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Old Jul 17, 2006 | 04:42 PM
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www.paceparts.com you can buy complete or ala carte
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Old Jul 17, 2006 | 04:48 PM
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The notion that it can't be bored more than .060 over is bunk. This is a big block we're talking about, not a 350. MOST big blocks can go .100 but you should have it sonic checked first. Crate engines are built for longevity, not peak performance. Decide which you want and go for it. Personally, I don't drop any engine in any of my rides that I didn't build myself.
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Old Jul 17, 2006 | 05:35 PM
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Originally Posted by BadMojo
I am with the crate crowd on this one.

GM built and warrantied.

Guaranteed reliability. Not a shady eBay'er or possibly crooked machine shop.
What about World Products? The makers of the motown small block that can be bored out safely to be a 454?
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Old Jul 17, 2006 | 08:36 PM
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Originally Posted by L88Plus
The notion that it can't be bored more than .060 over is bunk. This is a big block we're talking about, not a 350. MOST big blocks can go .100 but you should have it sonic checked first.
Sure you can bore any block over the safety limit, but will that block live....the cylinder walls are not that thick...last Chevy block you could go .125 over was the 283
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Old Jul 17, 2006 | 09:57 PM
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There are a lot of .100 over 454s running around, both street and strip. The -289 casting is the only one I've seen sonic consistently safe for .125 with .160 thick on the thrust side. Big block castings generally have plenty for 4.350, but have it sonic checked for safety. By the way, there are a lot of manufacturers that make .070 pistons if yours will hone to that dimension. I like the aftermarket stuff - my CNC Bowtie will have .285 thick cylinder walls after boring to 4.600. That ought to make for some seriously rigid cylinder walls
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Old Jul 18, 2006 | 08:05 AM
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Try the Engine Factory in Annandale NJ. I have no affiliation with them but have seen their operation and can say they are a quality orgaization. Call them and ask for Mike. If i had the money I would buy a crate from them but since I'm short on cash I'm piece mealing my buildup. In the long run I will most likely spend more money and time with a rebuild vs a crate.
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Old Jul 18, 2006 | 08:22 AM
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Originally Posted by fl_rider
How many ebay horror stories do we have to hear?

It's like buying shoes in a catalogue. The picture was really nice but when I got them they didnt fit....

http://www.gmgoodwrench.com/perfpartsjsp/home.jsp

I am happy with my crate motor. I have put over 15,000 miles on it so far.
Totally agree I wouldn't buy anything off dog-bay, maybe a hub cab. I was looking at an old rag top 442 and I e-mailed the seller so I could go look at the car inperson, test drive & kick the tires before I buy. He was only 3 hours away so why not. Well this guy wrote back that he was never home so I should just bid & see what happens. I wrote back & told that maybe if I win I'll get drunk and drive up at night in the rain to flat bed the car home. Hate dog-bay. Didn't mean to steal the thread. Sorry.
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To Rebuild or crate???

Old Jul 18, 2006 | 10:33 AM
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Icanfixitforyou,
I'm located in northern jersey near Montclair and Newark.

Those Motown blocks are really nice, especially the 454 with the improved cooling flow...but I don't have the funds for that type of build-up at the moment.

Still inbetween build-up or crate.
Even though my heads are original 68 427 heads with todays technology they're probably going to be my weekest link if I do a build up and will be the most expensive parts. Just trying to figure out if parting it together will be more expesive then just a crate.

Anyone know what those zz454 GM crates go for? no listing on the GM website. They're all forged which is perfect with low compression but I'm afraid to see the price.
$25 would be nice.
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Old Jul 18, 2006 | 10:40 AM
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Originally Posted by L88Plus
The notion that it can't be bored more than .060 over is bunk. This is a big block we're talking about, not a 350. MOST big blocks can go .100 but you should have it sonic checked first. Crate engines are built for longevity, not peak performance. Decide which you want and go for it. Personally, I don't drop any engine in any of my rides that I didn't build myself.
What about the 572? 620 HP at 9:1 cr. It is a crate engine so, longevity and peak performance? Can't imagine wanting much more power than that.

Last edited by Jim78SA; Jul 18, 2006 at 10:43 AM.
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Old Jul 18, 2006 | 10:47 AM
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Originally Posted by 68 NJConv 454
Icanfixitforyou,
I'm located in northern jersey near Montclair and Newark..........
Check in Promar Precision engines in Paterson. (1-800-422-6022 or www.promarengine.com) They are nationally advertised and appear to be on the up and up. I have no experience w/them, but see them advertised every week in Old Cars Weekly. They have been around for 30+ years so perhaps they are doing something right? FWIW.

Good Luck!

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