question: 11th month 78 'X' cast 308 head. what were they used for?

[toranaL34]

a 'X' cast just like a L34 head but it is cast 27 K 8 part number 9936122

what is this from??

[SL/ENUT]

Is it a pollution head? If so, i'm thinking A9X, VC HDT, VH SS Group III 308s. These would not be from a standard VB-VH 308

[toranaL34]

Is it a pollution head? If so, i'm thinking A9X, VC HDT, VH SS Group III 308s. These would not be from a standard VB-VH 308

I'm not sure, I am from the torana forum and the guys think its from a 79 vb commodore of some type hi pro??? thats why I signed up with you guys thought I'd have a better chance of finding what these heads are from?

now I have a 74 L34 head that has a simular 'X' cast on it so I'm very certian its a geniune casting and not a fake.

but the dates (11th 1978) are throwing us on what it could be from.

[delcowizzid]

VB 253/308 i think from the general consensus on other websites do they have the U-shaped EGR port

[toranaL34]

VB 253/308 i think from the general consensus on other websites do they have the U-shaped EGR port

I was reading another forum and noticed a mention of AMC mag iss 30 pg 28 and checked it out, have a read titled 'X Marks the Brock Spot' see what you think,


Possible Brocky / HDT modified?

[SL/ENUT]

well you say its a 1978 cast jobbies, i'm thinking A9X or Kingswood. These aren't from a VB Commodore, they never had a hipo 308(pity!). These are like B cast heads, built before them.

[toranaL34]

well you say its a 1978 cast jobbies, i'm thinking A9X or Kingswood. These aren't from a VB Commodore, they never had a hipo 308(pity!). These are like B cast heads, built before them.

could be but I was told that part number was vb commodore? is this correct,

and is'nt a 11th month of 78 still possible for first batch of vb's ?

[SL/ENUT]

I dunno about the part number, i'll have a look tomorrow night. The 11th month 78 is in the VB era, but there was still HZ Kingers and the alike still getting built.

[toranaL34]

I dunno about the part number, i'll have a look tomorrow night. The 11th month 78 is in the VB era, but there was still HZ Kingers and the alike still getting built.

thx

[Reaper]

L34 Head. That style was the performance version right up to the Brock "B" cast items of the mid 80's. Prob the 2nd best of the early style heads behind the "B" cast. VN type whips them all. VN "D" ports are the best stock head you will get.

Reaper

[toranaL34]

L34 Head. That style was the performance version right up to the Brock "B" cast items of the mid 80's. Prob the 2nd best of the early style heads behind the "B" cast. VN type whips them all. VN "D" ports are the best stock head you will get.

Reaper

thx reaper, with its casting date, trying to figure out what it was produced for? the only thing which remotley sounds plausable is the artical in the AMC mag iss 30 pg 28 titled 'X Marks the Brock Spot'.

[toranaL34]

VB 253/308 i think from the general consensus on other websites do they have the U-shaped EGR port

is this what your refering to.

[delcowizzid]

yeah i think so it will be a pollution head

[SL/ENUT]

Now its a pollution head, its not from a L34. Certainly looks to be off a 1978 era V8. As for the part number, ain't in my VB-VK Parts catalogue. I'll look into my other Holden V8 history book, when i find it.

[toranaL34]

Now its a pollution head, its not from a L34. Certainly looks to be off a 1978 era V8. As for the part number, ain't in my VB-VK Parts catalogue. I'll look into my other Holden V8 history book, when i find it.

thanx, this one is frustrating.

[SL/ENUT]

Ok, been looking about, the EGR port is a HX-VH spec item but the X cast is a L34 spec. I think someone has been playing around with a welder!.

[Reaper]

Ok, been looking about, the EGR port is a HX-VH spec item but the X cast is a L34 spec. I think someone has been playing around with a welder!.

Hmmm.... I thought that Holden did various runs of the "big valve" heads over the years for the race teams. The X looks too neat to be welded.

Reaper

[toranaL34]

Ok, been looking about, the EGR port is a HX-VH spec item but the X cast is a L34 spec. I think someone has been playing around with a welder!.

i found this picture from a 2007 thread on old holden. the guy also did'nt know what it was. but the X is very simular. it really does'nt appear to be a weld. It actually looks very simular to a genuin L34 head that I have.

[SL/ENUT]

Hmmm.... I thought that Holden did various runs of the "big valve" heads over the years for the race teams. The X looks too neat to be welded.

Reaper

They did, but most casting marks weren't evident. That includes the part numbers too.

[SL/ENUT]

i found this picture from a 2007 thread on old holden. the guy also did'nt know what it was. but the X is very simular. it really does'nt appear to be a weld. It actually looks very simular to a genuin L34 head that I have.

That is true, L34s did have them, but those heads are non pollution spec. The one you have is pollution spec. Early VC and VH HDTs with the big valve heads, L34 spec also had X cast into them as well. This is before B cast heads were made.

[MR-POIDA]

i have a 202 head with what looks like a factory X cast into the back of it? any ideas?

also a mate has a 308 and the block is cast 308x any ideas on that?

[Hangman]

What's the engine number prefix on the block and what's the head part number?

[SL/ENUT]

I have a set of X cast heads in my VB now. They have large valves, maybe been fiddled with though. What i have been told, they maybe a no frills 253/308 heads or hipo 308 heads, depending on part numbers.

[ari666]

x's are special to 253's, no? X stamped rods are definitly from a 253