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Old 09-08-2005, 09:41 PM
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Chey 400 build up.

I have an '02 s-10, and am planning on swapping the Vortech for a 400. I was Wondering what stock parts are saveable when trying to build a 406, and what parts should be added for smoother running. Also, any money saving tips like using 350 rods are welcome.
Thanks--> Kory

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Old 09-13-2005, 09:29 PM
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Save the crankshaft, timing cover, oil pan and main caps. 400s have short rods so it wouldnt hurt to get a set of 5.7s for it. The block may need to be clearanced for the slightly longer rods (not sure) so it might cost you a bit more than it would if you jsut keep the 5.565 rods. If you like turning RPM and have a high volume oil pump you may also want a deep sump oil pan or else you might suck the oil pan dry. If you like to swap cams out from time to time then you should go for a two piece timing cover. They might cost a little more than a stock stamped one but they will save you a lot of time by not having to drop the oil pan to change the cam. That basically leaves you with just the block and caps, and the crankshaft. Heck it might even be cheaper to buy a new crank if the factory one needs very much machine work. Summit lists a new Eagle crankshaft for $190.

Gotta love the small block Chevy. You can find ANYTHING for it. If you have nothing more than a block you're set.

Anybody know what it takes to internally balance a 400 crankshaft?
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Old 09-14-2005, 05:56 AM
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Quote:
Originally Posted by Blazin72
Anybody know what it takes to internally balance a 400 crankshaft?
It was going to cost me $800 and something like 15 plugs of mallory to get my stock 400 crank internally balanced. Needless to say I did not go that route. You can buy new 400 cranks that are made to be internally balanced from places like Eagle now.
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Old 09-14-2005, 09:46 AM
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While I agree with Blazin that a two piece timing cover allows for easier cam changes, be prepared for oil leaks. I don't know if the expensive ones are better at this, but on the $30 ones you disturb the inner part of the cover when you remove the outer cover. Let the swearing begin!
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Old 09-14-2005, 06:36 PM
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You got a leaky spark tube...
 
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Yeah, Summit has a Mr. Gasket one for $40. Thats one I would definitely pass on. I bought a Cloyes timing cover about a year ago. It uses an o-ring for a seal. The only thing I dont like about it is that it only allows you to change the cam and not the entire timing set. Next time Im gonna spend the extra money that will allow me to change the whole timing set as well. I installed a gear drive at the same time that I installed the timing cover and I really want to pull the gear drive back out because I cant stand it. But I cant just do that.

Good ones are expensive, but they are handy.
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Old 09-14-2005, 06:37 PM
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Quote:
Originally Posted by Garbonzo Bojangles
You can buy new 400 cranks that are made to be internally balanced from places like Eagle now.

How much do those cost?
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Old 09-15-2005, 06:14 AM
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Quote:
Originally Posted by Blazin72
How much do those cost?
Eagle's got a forged 4340 steel internal balance 400 crank for $660 at Summit. I'm think the other companies like Scat make them too.
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