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exchanging my press-fit pistons for floating wrists

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Old May 30, 2006 | 06:02 PM
  #1  
Token's Avatar
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
exchanging my press-fit pistons for floating wrists

it's too much hassle finding any rods that are press-fit these days


so now I've got an exchange from Summit, free shipping. Gotta find some good rods now.
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Old May 30, 2006 | 06:22 PM
  #2  
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From: Adrian, Mi
Car: 1989 Camaro
Engine: 350 but it's torn down right now.
Transmission: 700r4
Axle/Gears: I'm working on it,lol.
What motor are you working on? And any particular reason why you prefer the press fit over the bushed?
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Old May 30, 2006 | 06:34 PM
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From: Philly, PA
Almost all stock factory SBC rods are press-fit. Why not use a set? They're certainly strong enough for most street engines and can usually be bought as a complete set at local machine shops for about nothing (because people pitch them in favor of aftermarket rods, like you're about to do).
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Old May 30, 2006 | 06:48 PM
  #4  
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From: Adrian, Mi
Car: 1989 Camaro
Engine: 350 but it's torn down right now.
Transmission: 700r4
Axle/Gears: I'm working on it,lol.
Originally Posted by Damon
They're certainly strong enough for most street engines and can usually be bought as a complete set at local machine shops for about nothing (because people pitch them in favor of aftermarket rods, like you're about to do).
I'm not saying they suck or anything, I was just curious about why he wanted the press fit if he was buying a new set. I prefer the double spiral locks on floating pins for blueprinting purposes.
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Old May 30, 2006 | 06:53 PM
  #5  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
His pistons aren't grooved for locks.
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Old May 31, 2006 | 02:23 PM
  #6  
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From: Adrian, Mi
Car: 1989 Camaro
Engine: 350 but it's torn down right now.
Transmission: 700r4
Axle/Gears: I'm working on it,lol.
Originally Posted by Apeiron
His pistons aren't grooved for locks.
He already has his pistons? Well that would explain that. I thought he was building from scratch and choosing his components. My bad.
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Old May 31, 2006 | 03:28 PM
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
token, have you already exchanged your pistons yet? I'd really recommend getting press fit rods to match. some floating wrists *can* fall off, unless you use the more durable spiral locks, which apparently are very hard to get on.

usually floating is meant for when you tear down the motor at the end of each season, and i'm assuming you're not so...

what HP level you shooting for? I thought 400HP is about max wasn't it?
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Old May 31, 2006 | 03:54 PM
  #8  
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From: Armpit state
Car: 71 Nova
Engine: Superramed 383, Topline heads
Transmission: 700r4
Axle/Gears: 8.2 posi 3.08
Cant a machine shop cut the grooves in the pistons for the locks if it doeant already have them?
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Old May 31, 2006 | 03:57 PM
  #9  
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Some pistons you can.

I'd rather run press fit as well, no headache of locks coming out.
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