Generation III Internal Engine 1997-2006 LS1 | LS6

Sponsored by:

403 vs 408

Reply Subscribe

Search this Thread

Old

Jul 26, 2005 | 11:45 AM

#1

Thread Starter

Teching In

Joined: Jul 2005

Posts: 7

Likes: 0

Default

403 vs 408

I've recently started on a 6.0 iron block project and could use some advice. My block is nearly new with 6 of the bores measuring 4.000, one measuring 4.001, and one measuring 4.0015. I can have the machine shop hone the cylinders to 4.005 or bore them .30 over to 4.030. Texas speed and Thunder racing have pistons for both applications. Are there any advantages or disadvantages to either option. Thank for sharing your expertise.

Old

Jul 26, 2005 | 01:24 PM

#2

TECH Fanatic

iTrader: (1)

Joined: Jul 2004

Posts: 1,453

Likes: 0

From: Palm Harbor, FL

Default

might as well go 408, they seem to be making better numbers anyway.

Old

Jul 26, 2005 | 01:27 PM

#3

TECH Senior Member

iTrader: (10)

Joined: Mar 2003

Posts: 8,009

Likes: 0

From: North Texas

Default

i haven't seen too many 403 combinations out there personally.

408s make some great power. i don't think you'll go wrong either way.

Old

Jul 26, 2005 | 08:11 PM

#4

Thread Starter

Teching In

Joined: Jul 2005

Posts: 7

Likes: 0

Default

Thanks guys looks like its going to be a 408.

Old

Jul 26, 2005 | 08:28 PM

#5

Teching In

iTrader: (10)

Joined: Apr 2005

Posts: 44

Likes: 0

Default

408 is the way to go mine runs hard

Reply Subscribe

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 09:59 AM.