a lil help please.

[czar loc]

Got a slight ticking noise the other day and as I was board decided to investigate, removed passangers side rocker cover to find that the camshaft retainer bolt snapped off inside the head and as I cant be bothered drilling it out n all the f'in around luckily I have some spare heads sitting in the shed now what I need to know is the markings on the heads are different one's in the car are stamped 07 on the top,the ones I have in the shed are 06. Both from gtbs, can I just replace the one head and reuse the camshafts or do I have to replace both,? Any insight would help, cheers

[Rosssub]

Leaving the heads on and using easy-outs to remove the broken bolt would be a lot cheaper and easier in the long run. Have you found the broken bolt head?

[czar loc]

Yea but id have to pull out the engine to get into it and would rather just pull the head off and slap another one on as in the long run it would be easier for me, the bolt was still in place as it snapped at the top of the thread, it also loosened the other 1 in the pair but looks to be no damage to camshaft or shims/buckets.

[czar loc]

Ive also had 2 of the rocker cover bolts snap in the same head and had to drill out and helicoil but now its getting a little sad and would rather well yea swap the head over for a mint one thats good to go.

[Rosssub]

Have the replacement heads been tested for straightness, resurfaced and pressure tested?

Are both heads on the engine stamped 06? Or is there one 06 and one 07 on the other side? All the later model heads I've seen have a different number on each side, like LH 006 $ RH 007.

[czar loc]

 Rosssub said:

Have the replacement heads been tested for straightness, resurfaced and pressure tested?

Are both heads on the engine stamped 06? Or is there one 06 and one 07 on the other side? All the later model heads I've seen have a different number on each side, like LH 006 $ RH 007.

Yes yes and no, but not too worried, will upload photos tomorrow but the heads on the car have 07 on the top at the rear, heads in shed have 06 in the same plase yet to check bottom on car

[Rosssub]

The different numbers is likely just different rev/model, i.e rev A-06/rev B-07.

[czar loc]

Will try an easy out first but if I was to swap out the head should I use the existing camshafts or the pair that came with the heads? Will measure tomorrow but the markings are the same and im sure there identical anyway

[Rosssub]

Go for the cams with the least wear on the cam lobes/journals etc.