Need suggestions on 430 rebuild kits.

fastereddie

New member
Getting the 67 numbers matching 430 running next couple days.

Not sure what the plan is for the car, but tempted to pull the motor and see what I've got.


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68 wildcat

Active member
Probably make more sense to get it running and see if it needs anything before you tear into it. Do a compression test, see how much play there is on the timing chain, and check for strange sounds etc.
 

fastereddie

New member
Probably make more sense to get it running and see if it needs anything before you tear into it. Do a compression test, see how much play there is on the timing chain, and check for strange sounds etc.
We got her running and didn't like what we heard. Wrist pin, connecting rod, maybe...metal flecks in the oil filter that we cut apart, and some serious clanking going on so it's coming out.

Anyone have a favorite rebuild kit they like and can suggest?

California car so all the smog stuff will come off and be stored. Any thoughts on blocking the exhaust passage on the manifold right under the carb?

Haven't worked on a Riv before, any 430 specific advice? Steps not to miss, any "must do's"? Not building a beast but definitely want all 360HP and 475 Tq outta this baby!

Thanks


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LARRY70GS

Active member
I would not be buying any rebuild kits. The right way to do a rebuild is to strip it down and take it to a machine shop. Let them check it and advise you what it needs. Then buy parts. There are lots of shops that will royally screw up a Buick engine because they rarely build them and won't listen.

If you don't have the money for this, I get it. Does it really need a rebuild? Is it worn, using oil, smoking or making noise? If not, check the compression, and oil pressure. Maybe do a valve job and replace the timing chain.
 

fastereddie

New member
I would not be buying any rebuild kits. The right way to do a rebuild is to strip it down and take it to a machine shop. Let them check it and advise you what it needs. Then buy parts. There are lots of shops that will royally screw up a Buick engine because they rarely build them and won't listen.

If you don't have the money for this, I get it. Does it really need a rebuild? Is it worn, using oil, smoking or making noise? If not, check the compression, and oil pressure. Maybe do a valve job and replace the timing chain.
Thanks for that. Yes it needs it. Rebuild starts tomorrow.


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I would follow Larry's advise. You are putting a lot of trust in the shop you choose to do the machine work so trust them to pick out the parts you need. They are familiar with the parts supplier and might even be able to get a better deal for you. Here is an example of you buying your own kit: are you a good judge on if your crank needs turned and how much? What about boring the block? Both these examples requires high quality measuring tools and knowledge and ordering the correct size bearings and rings and pistons.
 

fastereddie

New member
I would follow Larry's advise. You are putting a lot of trust in the shop you choose to do the machine work so trust them to pick out the parts you need. They are familiar with the parts supplier and might even be able to get a better deal for you. Here is an example of you buying your own kit: are you a good judge on if your crank needs turned and how much? What about boring the block? Both these examples requires high quality measuring tools and knowledge and ordering the correct size bearings and rings and pistons.
Not sure how we got here....

I appreciate all the concern for my well being (and the car's).

My buddy (mechanic of 40 years) and I are doing this, in his shop. Was just looking for tips on Buick specific products etc...he has a lifetime of Chevy builds and me with Fords. Not helpless, green or worried.

Crank is a mess, I'll be lucky if they can turn it and I get my core back.

This Forum has been a wealth of knowledge and a real resource. Appreciate y'all.


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LARRY70GS

Active member
Ed, don't get me wrong, I am not questioning your ability to do the job. I have been over on http://www.v8buick.com/index.php for over 18 years now. I have seen a lot of mistakes made rebuilding Buick engines. You asked for Buick specific products. The best place, hands down is, TA Performance. You will find EVERYTHING you need there. Not the cheapest but the best no doubt. You can download a copy of their latest catalog,


Chevies and Fords are not Buicks. As long as you realize that and build the engine according to the way Buick built them, you'll be fine. Bearing clearances and oil pump clearances are really important in a Buick engine. If you build it with Chevy clearances, you will not have enough oil at the back of the block. Seen plenty of #7 and 8 rod bearings scorched because of this. Depending on how much power you will be making, the oil mods described in this thread are really worth doing.


Another thing is Pistons. The Pistons you will find out there will end up anywhere from .040 to .090 in the hole. That can really drop compression as well as make the motor more detonation prone. If you want a reliable engine that will run on pump gas, you'll want the pistons at 0 deck. That means Pistons with a different compression height. We have Piston options today that didn't exist years ago. Yes, custom pistons are more expensive, but not as bad as you might think. You can customize compression height and dish/valve relief ccs to get the static compression right where you want it for the cam you intend to run. Autotec and Diamond have customize-able pistons. Give Jim Weise a call over at Trishield Performance. He can tell you more.

There are also Molnar and Eagle rods for stroker builds. With a 455, 470 and 482 cubic inches are possible.

We also have Hydraulic roller cams now.

Most of the Power Potential in these motors is in the heads. Aluminum heads out of the box outflow even the best ported iron heads. With a set of TA heads with entry level porting, 10:1 static compression, and a cam with intake duration of 230* @ .050, it will be hard NOT to make well over 500 HP and 550 TQ.

I know all this is expensive and may not be in your budget, but there are lots of possibilities for the Big Block Buick that didn't exist in the past. Buy once, Cry once.

I also encourage you to join over at V8buick. There is a lot of specific knowledge over there that will help you make the most of your build.
 
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