LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

rod questions

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Old Mar 28, 2006 | 04:46 PM
  #1  
12sec94z28's Avatar
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rod questions

okay i am rebuilding an lt1. i am on a budget. the block is being boared and hoaned .30 over. I am using a stock crank. I am going to do forged pistons. My questons are this....

i have heard conflicting arguments that the pink rods are stronger and others say the powdercoated rods are stronger. which is true? ( i have alway thought the PC rods were stronger)

also i know when you order your pistons you have to choose floating or press in for the wrist pins. i know that floating are better. can you use floating with stock rods?

also about how much does it cost to have rods reconditioned and what all does that involve?

just looking for some insight and info......

thanks
chris
Old Mar 28, 2006 | 04:50 PM
  #2  
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Re: rod questions

They are "powder metallurgy" (PM) rods, and they are stronger than the "pink" rods. But not all the early LT1's got the PM rods. Are you sure that's what you have?

From the "Rebuilding the LT1" article:
RODS

350 - The original LT1 came with regular forged 350 rods, that were shot peened for localized hardness under the head of the bolt and nut. Powdered metal rods were phased in for the Corvette around 1994 and used in all of the LT1 engines by 1995. GM made the change because the powdered metal rods were cheaper to make and were much stronger than the GM high performance "pink" rods. In fact, they are supposed to be good for up to 450 hp. They are machined at the parting line so they can be reconditioned.
Old Mar 28, 2006 | 05:15 PM
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12sec94z28's Avatar
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Re: rod questions

i will have to pull the pan and see. Its a 94 lt1 so i gues its possible. I did not know any 94 had them. I thought only 95 and up.

chris
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