Determining Head Bolts for 04

Reply Subscribe

Thread Tools

Search this Thread

Jan 18, 2011 | 06:23 PM

viciousknid

Thread Starter

Where's the Beef?

iTrader: (8)

Joined: Jan 2007

Posts: 9,382

Likes: 1

From: Dover, Oklahoma

Determining Head Bolts for 04

In the middle of the 04 6.0 production they changed the head bolts. How can I determine what bolts my 04 lq4 needs?
I don't have the original head bolts.

Jan 18, 2011 | 06:25 PM

00ChevyScott

Wearin' da big hat

iTrader: (10)

Joined: Jan 2008

Posts: 10,262

Likes: 9

From: Over There

Quote:

Originally Posted by viciousknid

In the middle of the 04 6.0 production they changed the head bolts. How can I determine what bolts my 04 lq4 needs?
I don't have the original head bolts.

You could use a rod or something to check the lengths of all the bolt holes in the block.

Jan 18, 2011 | 06:28 PM

viciousknid

Thread Starter

Where's the Beef?

iTrader: (8)

Joined: Jan 2007

Posts: 9,382

Likes: 1

From: Dover, Oklahoma

It has 04+ new cam bearing sizes. Would that indicate the newer head bolts as well?

Jan 18, 2011 | 06:28 PM

viciousknid

Thread Starter

Where's the Beef?

iTrader: (8)

Joined: Jan 2007

Posts: 9,382

Likes: 1

From: Dover, Oklahoma

Quote:

Originally Posted by 00ChevyScott

You could use a rod or something to check the lengths of all the bolt holes in the block.

Do you know the length of 1st and 2nd design bolts?

Jan 18, 2011 | 06:29 PM

00ChevyScott

Wearin' da big hat

iTrader: (10)

Joined: Jan 2008

Posts: 10,262

Likes: 9

From: Over There

Quote:

Originally Posted by viciousknid

Do you know the length of 1st and 2nd design bolts?

1st design will have 3 different length bolts

2nd design will have 2 different length bolts

Jan 18, 2011 | 06:33 PM

viciousknid

Thread Starter

Where's the Beef?

iTrader: (8)

Joined: Jan 2007

Posts: 9,382

Likes: 1

From: Dover, Oklahoma

that'll work. I'm thinking they likely changed the cam bearings and head bolt designs at the same time so I likely need the 2nd ones.

Jan 19, 2011 | 01:57 PM

moes04silverado

TECH Enthusiast

iTrader: (2)

Joined: Aug 2005

Posts: 732

Likes: 0

From: Cleveland, Ohio

both GM part numbers will work with either! The first production the middle two bolts where shorter in length, the sencond production they were all the same.

word of advice - use ARP