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Au Head onto Ef Block 

 

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 Post subject: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 8:23 pm 
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hey guys im just curious if a standard AU head will bolt straight onto a standard ef block?
i really need a reply asap.
any help will be greatly appreciated
Cheers,
Brandon
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 8:41 pm 
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yes, but its best that you also use the au cam and rockers
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 9:30 pm 
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TROYMAN wrote:
yes, but its best that you also use the au cam and rockers

+1 what troyman said

 

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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:04 pm 
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So can I put a wade 977B cam in it?
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:13 pm 
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apparently you can use a 977b cam as long as it is from a au . i was going to get a au xr6 head and put my ef 977b cam and rockers in but it was going to be more trouble than what it was worth
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:18 pm 
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there is speculation that you can use an e series cam in the au head providing you use the e series rockers..
some say yes and some say no..ive dummy fitted one and it seemed ok but the engine was on a stand and never started...so i cant confirm 100%..

otherwise if you havnt got the cam yet get the wade au1645, this is the au equivilant to the es 977b...
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:25 pm 
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yeah i am just going off what jim mock told me, i have not tried it
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:28 pm 
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Well my brother rang flow craft yesterday and enquired about a ef head ( better deal than hoppers heads ) and the bloke said to put a au head on because its better than the ef. And he asked what cam and we said about the 977b and he said yeah that's a good cam to put in it .
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 10:39 pm 
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was that a 977b ef cam
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 Post subject: Re: Au Head onto Ef Block
Posted: Thu Jun 23, 2011 11:20 pm 
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well i was meaning the 977b ef cam, but im not sure if he thought the same or not, so i may have to ring him back up, but i might wait until i have the cash so i can order it at the same time.
flow craft supply the head,lifters,shims,valves,they also port the head. all you have to supply is the cam, and they charge $1100, whereas hoppers do the reco exchange with a wade cam, but no shims, no lifters.
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 Post subject: Re: Au Head onto Ef Block
Posted: Fri Jun 24, 2011 6:34 am 
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TROYMAN wrote:
there is speculation that you can use an e series cam in the au head providing you use the e series rockers..
some say yes and some say no..ive dummy fitted one and it seemed ok but the engine was on a stand and never started...so i cant confirm 100%..

otherwise if you havnt got the cam yet get the wade au1645, this is the au equivilant to the es 977b...

You can't.

I have tried first hand.

No compression, things open at the wrong time. You can't mis-match cam/rockers either, lobes don't line up.

So if you want to use AU head you then have to use AU rocker assembly and AU cam (aftermarket to suit AU is fine obviously).

 

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 Post subject: Re: Au Head onto Ef Block
Posted: Fri Jun 24, 2011 7:24 am 
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Deff wrote:
TROYMAN wrote:
there is speculation that you can use an e series cam in the au head providing you use the e series rockers..
some say yes and some say no..ive dummy fitted one and it seemed ok but the engine was on a stand and never started...so i cant confirm 100%..

otherwise if you havnt got the cam yet get the wade au1645, this is the au equivilant to the es 977b...

You can't.

I have tried first hand.

No compression, things open at the wrong time. You can't mis-match cam/rockers either, lobes don't line up.

So if you want to use AU head you then have to use AU rocker assembly and AU cam (aftermarket to suit AU is fine obviously).



thanks for that, this has solved my question and now ill either look around for a rocker gears to suit AU aswell as a cam or just use the EF head,
just one other thing, what are the benefitss of using a AU head instead of EF?
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 Post subject: Re: Au Head onto Ef Block
Posted: Fri Jun 24, 2011 10:18 am 
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The only benefits is the AU is a better starting point if you are going to port the head. Stock for stock the EF head will flow better.

 

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 Post subject: Re: Au Head onto Ef Block
Posted: Fri Jun 24, 2011 10:27 am 
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GeZza200 wrote:
The only benefits is the AU is a better starting point if you are going to port the head. Stock for stock the EF head will flow better.


i have read about this too.. apparently the EF head was the best 6pot head for flow..

 

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 Post subject: Re: Au Head onto Ef Block
Posted: Fri Jun 24, 2011 2:27 pm 
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It seems like a good to use the AU head, but seems like a bit of stuffing around, I would have to find AU rocker gear. Where as I have the EF rocker gear. The bloke from flow craft said something about the AU valves are smaller or something for increased compression?
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