Gen 4 pistons on Gen 3 rods?

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Oct 24, 2015 | 05:10 PM

Garrett Shaver

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From: Paragould ar

Gen 4 pistons on Gen 3 rods?

I've got a set of Gen 4 4.8 non press fit pistons can I use them on Gen 3 press fit 5.3 rods?

Oct 24, 2015 | 07:19 PM

Garrett Shaver

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From: Paragould ar

Anyone? I'd really like the use the 4.8 pistons if possible..

Oct 25, 2015 | 12:24 AM

severancej

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Bump.. ive got an 02 Silverado 5.3 and a set of 06 ls4 flattops.
Hoping these will work to bump compression.

Oct 25, 2015 | 08:04 AM

KCS

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From: Conroe, TX

Yes, it will work fine. You will need a machine shop to press them in though.

If it were the other way around (press fit pistons-floating rods), then it would not work.

Oct 25, 2015 | 09:02 AM

Garrett Shaver

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From: Paragould ar

Is a machine shop required? I have access to a press to do it if the factory wrist pins will work.

Oct 25, 2015 | 09:27 AM

KCS

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Quote:

Originally Posted by Garrett Shaver

Is a machine shop required? I have access to a press to do it if the factory wrist pins will work.

Yes, a machine shop is required. There is some specialized equipment that is used to install the pins. They are not actually pressed in. The rod pin bores are heated in a rod oven so that the bores open up. The pins are lubes and slide in, but a special fixture is used to make sure they go in straight and centered. It has to be done quickly and accurately so that the pins don't get stuck in the wrong position when the rod pin bore cools and contracts.

Oct 26, 2015 | 07:57 AM

gagliano7

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From: Monroe,NY

There is a guy on here that has done that in his shop by heating up th rods and pressing them in. He had a video doing it but i can't remember his name. Something like agearhead4life.

Here is the video