Maximum engine size for FB/EKs Holdens under NCOP

Includes fuel system, cooling system and exhaust.

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TAZ
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Joined: Wed Sep 23, 2015 9:32 pm
State: TAS
Location: hobart

Re: Maximum engine size for FB/EKs Holdens under NCOP

Post by TAZ »

LM7 5.3 L LS (cast iron block) fits within the allowable CC range but you quite often see people putting 5.7L and 6.0 L LS engines. I used the weights from the sedan with the hydromatic.

Apparently some people have been known to bore the 5.3L out to 5.7L as it is the same block. I would never do such a thing though………..
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Errol62
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Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: Maximum engine size for FB/EKs Holdens under NCOP

Post by Errol62 »

For the record


FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
Blacky
Posts: 13693
Joined: Tue Jul 20, 2004 8:58 am
State: WA
Location: up in the Perth hills

Re: Maximum engine size for FB/EKs Holdens under NCOP

Post by Blacky »

TAZ wrote: Thu Sep 04, 2025 6:44 am

Apparently some people have been known to bore the 5.3L out to 5.7L as it is the same block. I would never do such a thing though………..
Over here they bubble test them ......... :thumbsdown: I was hoping to do the same with my 57 , it could be licenced with a 396 but it was a 540 :econfused:
I started with nothing and still have most of it left.


Foundation member #61 of FB/EK Holden club of W.A.
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Harv
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Joined: Mon Oct 08, 2007 2:00 pm
State: NSW
Location: Sydney, Australia

Re: Maximum engine size for FB/EKs Holdens under NCOP

Post by Harv »

When I engineered the wagon, the block number was checked. It is a 350 block, with a 327 crank. It was suggested I needed to pull a head and demonstrate it was a 327. I supplied the build sheet, and the engineer recognised the builder and trusted him from past experience.

This kind of experience makes me think more like Smokey Yunick, and hence this thread. If I can demonstrate compliance, my life is easier.

Cheers,
Harv
327 Chev EK wagon, original EK ute for Number 1 Daughter, an FB sedan meth monster project and a BB/MD grey motored FED.
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