ls7 rod length
Thread Starter
Heel & Toe
Joined: Aug 2022
Posts: 20
Likes: 0
From: Dallas, TX
ls7 rod length
Long story short my ls7 spun some bearings, i’m able to reuse the crank and block and i’m going with a forged rod and piston setup. I’m not really trying to spend over 1000 for a rod set and another 1000 for a piston set. I was looking at texas speed or callies comp star forged rods and maybe wiesco pistons. All of the rods i see are 6.125” long but i’m seeing on the forum the stock rods are 6.067” would i be okay running a 6.125” long rod with a piston that has bigger valve reliefs or how does that work? Also going with a set of prc heads if that changes anything.
Melting Slicks
Joined: Apr 2019
Posts: 2,513
Likes: 1,166
From: Northern Wisconsin
I could be wrong, but I don't think any of the aftermarket forged steel connecting rods, including the Callies Compstars, will work with the OEM LS7 crankshaft. You will need to buy an aftermarket crankshaft as well. It is best to buy a matched and balanced rotating assembly (crankshaft, connecting rods, and pistons). That might be a blessing in disguise anyhow. Reusing that crankshaft after spinning bearings might end up being way more trouble than it is worth.
Last edited by ClothSeats; Sep 29, 2022 at 09:20 AM.
Instructor
Joined: Sep 2001
Posts: 159
Likes: 21
From: McKinney Tx
Re-balancing an OEM LS7 crank after changing to steel rods is basically not a good idea as the balancing generally costs more than a decent aftermarket crank.
Nowadays both Callies and SCAT have made 8 counterweight forged cranks both in American and in Import steel forgings that are really nice and are far better than the oem or most aftermarket 6 counterweight cranks as well.
These also have no problem balancing with aftermarket rods and pistons at all.
Nowadays both Callies and SCAT have made 8 counterweight forged cranks both in American and in Import steel forgings that are really nice and are far better than the oem or most aftermarket 6 counterweight cranks as well.
These also have no problem balancing with aftermarket rods and pistons at all.
Le Mans Master
Joined: Jun 2015
Posts: 6,336
Likes: 1,110
From: Austin Tx
Re-balancing an OEM LS7 crank after changing to steel rods is basically not a good idea as the balancing generally costs more than a decent aftermarket crank.
Nowadays both Callies and SCAT have made 8 counterweight forged cranks both in American and in Import steel forgings that are really nice and are far better than the oem or most aftermarket 6 counterweight cranks as well.
These also have no problem balancing with aftermarket rods and pistons at all.
Nowadays both Callies and SCAT have made 8 counterweight forged cranks both in American and in Import steel forgings that are really nice and are far better than the oem or most aftermarket 6 counterweight cranks as well.
These also have no problem balancing with aftermarket rods and pistons at all.
