LS1TECH - Camaro and Firebird Forum Discussion
LS1-LS2-LS3-LS6-LS7 PERFORMANCE
Generation III Internal Engine
3.903 bore block

Generation III Internal Engine 1997-2006 LS1 | LS6

Sponsored by:

3.903 bore block

Reply Subscribe

Search this Thread

Old

Jan 3, 2008 | 12:35 PM

#1

Thread Starter

Teching In

iTrader: (1)

Joined: Sep 2007

Posts: 24

Likes: 0

From: Texas

Default

3.903 bore block

I got some 3.903 pistons for my block, I'm buying rings real soon and getting my block to the machine shop to be bored out. I've read 3.905 bore and rings will not be suitable for 3.903 pistons, so I guess what I should do is bore my block to 3.903 and get some rings for 3.903 right? Any experience will be appreciated, thanks

Old

Jan 3, 2008 | 12:37 PM

#2

TECH Resident

iTrader: (1)

Joined: Oct 2004

Posts: 894

Likes: 1

From: Greenwood, IN

Default

get an oversized set of rings and have them "file fit" the rings to the bore that they just hoaned

Old

Jan 3, 2008 | 12:53 PM

#3

Thread Starter

Teching In

iTrader: (1)

Joined: Sep 2007

Posts: 24

Likes: 0

From: Texas

Default

So a set of 3.905 rings on a 3.903 block bore will do?

Old

Jan 3, 2008 | 08:55 PM

#4

TECH Enthusiast

iTrader: (43)

Joined: Jan 2004

Posts: 732

Likes: 5

From: Orlando FL

Default

3.903 Rings for a 3.903 Piston. But if you cant get a set of drop in rings. You'll need to get file-fits rings for the bore and file them to get the final ring gap that you want. Take the Pistons to the machine shop when being bored. It'll be a 3.903 bore.

Old

Jan 3, 2008 | 09:00 PM

#5

TECH Senior Member

iTrader: (18)

Joined: Jun 2002

Posts: 10,036

Likes: 0

From: NW Houston, TX

Default

Quote:

Originally Posted by Steve01SS

3.903 Rings for a 3.903 Piston. But if you cant get a set of drop in rings. You'll need to get file-fits rings for the bore and file them to get the final ring gap that you want. Take the Pistons to the machine shop when being bored. It'll be a 3.903 bore.

I second that.

Reply Subscribe

3903, pregapped

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 11:15 AM.