I'm ordering my head studs and want to clarify something. Do I order the kit based on the year of the block or the year of the heads? I'm putting newer ('05+) 243 heads on an '00 5.3 block. Do I need the kit with the 4 shorter bolts or the one with the bolts all the same?

Basically, I'm trying to figure out if they changed the block or the heads in '04.

 

You want the bolts that match the block as the bolt holes are machined differently on the 04+ blocks

 

What did they change? The threads in the block? Or the length of the bolts?

Just wondering what to look out for

Thanks

 

It's related to the block, not the heads

 

2nd that. The heads are all the same.

The 2004+ blocks use all short bolts/studs. The 2003 and older blocks use short and long bolts/studs.

http://texas-speed.com/shop/category...36&sortby=name

Rick

 

Thanks very much

Now I know what to watch for when I get new head bolts.

 

That's the ticket right there

 

If the block is '00 then the GM bolt number is a 12498545. You will need 2 sets. If you want ARP, they are 134-3609. The ARP bolts come with bolts for both heads.

Jon

 

If you say his name three times in a row, he will appear...

 

haha... better late than never, right?

Jon