Need forged pistons for a 400

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Old July 8th, 2011, 09:56 PM
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1968 442 restoration
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Need forged pistons for a 400

I need a set of forged pistons for a 1968 400 out of my 442. I am looking for .030 or .040 oversized pistons. The TRW or Speedpro part number that my machinist gave me is L2321 .030. He said the warehouse that supposedly had them can not find them and it will be 3 or 4 weeks to get some made. Anybody know where I can find some pistons sooner than that?

Chris
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Old July 8th, 2011, 10:06 PM
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Old July 8th, 2011, 11:55 PM
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Those from Super car is cast.
That is going be a tuff one to find forged for a '68/69 400
Gene
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Old July 9th, 2011, 06:29 AM
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http://www.oldsperformanceproducts.c...ulevel=Pistons
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Old July 9th, 2011, 09:28 AM
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Originally Posted by getawaycar
I need a set of forged pistons for a 1968 400 out of my 442. I am looking for .030 or .040 oversized pistons. The TRW or Speedpro part number that my machinist gave me is L2321 .030. He said the warehouse that supposedly had them can not find them and it will be 3 or 4 weeks to get some made. Anybody know where I can find some pistons sooner than that?

Chris
Hi Chris, where did you get that part number??

I had a 100% stock '68 442 here recently with some L2346F pistons and assumed them to be correct??

Bore is 3.870" +.030"!

Thanks, Gary in N.Y.

P.S. Maybe the C.R. is the difference in the 2 part number's, but I do have a new set of the L2346F+030's here presently with the Speed-Pro ring set!


Last edited by GOSFAST; July 9th, 2011 at 10:55 AM. Reason: Add info/pictures
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Old July 10th, 2011, 03:47 PM
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Gary,

Just saw the picture. Not sure how I missed it before. Send me a PM with a price on Monday and I will get back to you either way. Thanks!

Chris
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Old July 12th, 2011, 07:02 PM
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This may be worth checking into-you may bore the 400 block .057 and use 350 Olds pistons. (W-31) You can have the block sonic checked and see if it will take the bore or not. They will work with your rods as far as wrist pin height. But I'm not an Olds motor builder.
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Old July 13th, 2011, 12:45 AM
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The 350 Olds pistons have a different pin height. The '68/69 Olds 400 uses the same pin height as the 455.
I think the 2321's are not the ones for the 68 400
I'm not to sure about the 2346's, but I have not done to much research.
You can bore the early 65 to 67 400 block and use the 350 Olds pistons.

Gene
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Old July 13th, 2011, 05:13 AM
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64Rocket, you are correct on the 68-69 400, the longer stroke is that of the 455. That said, it actually made that motor a lesser performer compared to the 65-67 short stoke 400 the can be bored .057 and use 350 pistons. Thanks for the corrected info.
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