has anyone put ecotec heads on a earlyer motor

[delcowizzid]

hmmm might have to give jimmy a call and enquire about them wonder how far old vn racer can rip them out too compared to stock or us spec ones

 

[kym192]

ill just checkk see it the head gasgets are the same cause if they are ill give it a go i didnt pay that much for the vn actually more in parts fixin the thing lol

 

[neet_wagon]

I tried to get some massively ported alloy heads from the states through ZZP, but they don't make any for the pre-ecotec models (seriesI and II). Anyone know where else I could look?

 

[hakhawk]

I think the aftermarket heads the turbo buick guys use will fit?

from memory, i found that there were a few oil/water holes in wrong spots. possibly doable, but heaps of work, way more than ecotec heads on pre-ecotec motor

I tried to get some massively ported alloy heads from the states through ZZP, but they don't make any for the pre-ecotec models (seriesI and II). Anyone know where else I could look?

no one does massively ported heads for them. all you can do is get a set and drop em off to your local head man, and get him to port the **** outta them.

ill try and dig up an article i have scanned when i get home, from an sc mag, has some cross sections of pre eco heads.




ecotec heads bolt onto pre eco block, heads need clearancing around a couple of the pushrods, as they sit on a different angle, complete custom cam needs making, since lobe spacing is different, and a couple lobes need to be swapped around, since the ecotec is IEIEIE valves, where pre eco is EIIEIE(ish, cant remember exactly, but one end is switched)

then you need custom manifold, reposition accesories, etc.

 

[neet_wagon]

But aren't ecotec heads still cast-iron?

I'm chasing a set of alloy heads. And someone has to make them, otherwise how are all the alloy headed seriesI 9sec buicks getting down the strip?

I have seen crazy-ported aluminium heads (for the buick) on other websites, but no-one seems to make them?!

I've asked in the turbo buick forums, but no reply.

 

[Immortality]

But aren't ecotec heads still cast-iron?

I'm chasing a set of alloy heads. And someone has to make them, otherwise how are all the alloy headed seriesI 9sec buicks getting down the strip?

I have seen crazy-ported aluminium heads (for the buick) on other websites, but no-one seems to make them?!

I've asked in the turbo buick forums, but no reply.

try CHAMPION Racing Heads

 

[neet_wagon]

^^^^ Yeah just went and looked there. Theres also another mob. I started a thread regarding the alloy v6 block they make.

Champion are who i'm going with. should be under $2500 landed and at my door.

 

[delcowizzid]

i was looking at these and making a new intake or buying there one Champion GN-1 8 Bolt Heads, Heads & Intake, HE100-8 | Cotton's Performance Buick Grand National Parts & Service

 

[neet_wagon]

Whats the difference between your GN-1's and mine?? aside from yours are 300bucks cheaper

 

[delcowizzid]

haha i just saw they were the same heads different site