427 small block specs? - Team Camaro Tech
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post #1 of 16 (permalink) Old Sep 21st, 05, 01:22 PM Thread Starter
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Question 427 small block specs?

Ok I found a place in Auburn, WA that will do all the machine work on my block. The problem is they have about a 9 month waiting list for their engine guru to get time to build the engine. After talking with them I also came to the realization that they are VERY expensive. I have no problem having them machine the block and balance it but I have checked and can get the parts alot cheaper else where. What I want to do is build a very stout, RELIABLE, pump gas 427 small block. What I need is some specs. What crank, what rods (length) Which pistons and also which heads? I have a World aluminum 400 mains block, and I will also run aluminum heads. Also on the heads I need combustion size. Also which cam? I plan on running a hyd roller. I dont plan on going over 6000-6500 rpm. Thanks alot!!
Mike

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post #2 of 16 (permalink) Old Sep 21st, 05, 06:57 PM
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Re: 427 small block specs?

Summit will sell you the entire bottom end that World Products puts in their big inch small blocks. Has everything you need. If you don't like their price or products, I would at least call their tech line to get the specs. You can also try Sharfiroff Racing Engines, they build big inch small blocks too.
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post #3 of 16 (permalink) Old Sep 22nd, 05, 07:44 AM Thread Starter
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Re: 427 small block specs?

Thanks I thought of that but World uses Eagle parts and I'm not a big fan of chinese steel.

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post #4 of 16 (permalink) Old Sep 22nd, 05, 07:50 AM
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Re: 427 small block specs?

Buddy with Nova running an Eagle 383 kit (balanced) and spins to 7000+ regularly at the track.
I hate the off shore stuff too, but who you gonna go with anymore ? Lots of stuff made off shore and stamped or finished here.

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post #5 of 16 (permalink) Old Sep 22nd, 05, 08:57 AM
 
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Re: 427 small block specs?

Jesus, if 427 is considered a small block, wtf is a big block?!?
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post #6 of 16 (permalink) Old Sep 22nd, 05, 09:08 AM
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Re: 427 small block specs?

By todays standards yes a 427 is a small block. Big blocks are getting huge. 500+ cubic inches are the norm for most. I heard a guy talking about his new 813ci engine the other day (I believe he said 813, it was 8 something). 555ci engines are all over the place.

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post #7 of 16 (permalink) Old Sep 22nd, 05, 10:20 AM
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Re: 427 small block specs?

Biggest small block I've see advertised was a 472ci (I thought it was a typo) I am looking now for it. Post info when I find.

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post #8 of 16 (permalink) Old Sep 22nd, 05, 10:55 AM
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Re: 427 small block specs?

Doug,
Yes, there is a 472ci small block. Several places sell them. I believe Ohio Crank has one www.ohiocrank.com

I don't want to hijack the thread.

Mike,
Any performance machine shop should be able to do the job. It is not rocket science. Your best bet is to go to the local drag strip and ask people who they use. As far as the over seas parts, some are great and some are junk. It really depends (much like stuff made here). It's not the steel that's the problem it's the machining after the part is made. Once again a good machine shop will measure everything or if you build it yourself you "need" to measure everything to be sure it's all in spec. I have never had an issue with an overseas crank, sometimes they can be a bit on the tight side (slightly larger journals) which means either an over sized bearing or machining the crank. If budget is not a problem then go buy a Callies, Lunati or Cola. If budget is a major factor you have to try to stretch your dollar. What do you plan on using this engine for? If it is a street car, you will never hurt a "cheap" crank. In that case buying a high dollar crank will only be good for bragging rights, it's not going ot give you anything else.

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post #9 of 16 (permalink) Old Sep 22nd, 05, 10:56 AM
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Cool Re: 427 small block specs?

Quote:
Originally Posted by DOUG G
Biggest small block I've see advertised was a 472ci ...
Sure - but, not with a 'stock' block... which is the 'flavor' of this thread (isn't it???).
Anything that 'big' would require a relocated cam and other mods.
You would have to start with aomething like one of the Dart Tall Block castings to go that large.

Check Speed-O-Motive - they just finshed a 450(+) motor for a friend. Haven't heard it run - but it should be a beast...
'Speed-O' builds lots of "HUGE" 'Small Blocks'

Mike - you could also check out Speed-O-Motive for a build. Their turn-time should be better.

John

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Oh yeah, and 1 "Straight-Six" ...
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post #10 of 16 (permalink) Old Sep 22nd, 05, 11:14 AM
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Re: 427 small block specs?

Mike does have an aluminum aftermarket block and sorry if I got away from the topic at hand. I was only pointing out that small blocks have grown huge.

here's the 472 BTW http://www.speedomotive.com/shafirof...2-635%20hp.htm

This from Bill Mitchell.

http://www.theengineshop.com/sbkits3.shtml

From Speed-o-motive

415 kit http://www.speedomotive.com/500_hp_maxi_mouse.htm

http://www.speedomotive.com/CHEVY%20STROKER%20CRANK%20KITS.htm didn't see a 427 kit just 415 or 421 kits.

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Last edited by DOUG G; Sep 22nd, 05 at 04:42 PM.
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post #11 of 16 (permalink) Old Sep 22nd, 05, 06:37 PM
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Re: 427 small block specs?

And now I see a 481ci ? Holly Cow !

68 Camaro~LSx ~all motor
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post #12 of 16 (permalink) Old Sep 23rd, 05, 09:00 AM
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Re: 427 small block specs?

That's the first I heard of a 481ci small block. Where did you see that? The only problem with the huge small blocks (460+ ci) is that the block is already max'd out. What happens when it's time for a rebiuld? I guess if it's an aluminum block you just re-sleeve it.

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post #13 of 16 (permalink) Old Sep 23rd, 05, 09:39 AM
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Re: 427 small block specs?

Mail ordering an engine is a gamble. Probably cheaper in the long run to have someone local do it.....

Go to the drags or other races, ask some of the fast people what shops they like. Some of them might own their own shops. Clean and organized shops are a plus.

Doesn't sound like you are too worried about price. Aluminum block, big heads, American steel crank.... What's your ET goal?

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post #14 of 16 (permalink) Old Sep 24th, 05, 06:37 PM
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Re: 427 small block specs?

Try this page out. How to build a 427 cid SBC!

http://www.carcraft.com/howto/1004/

Tim


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post #15 of 16 (permalink) Old Sep 24th, 05, 07:38 PM
 
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Smile Re: 427 small block specs?

There is an old mag. article about a 504" SB that, (I think?), Shafiroff made.

They said he said it ran fine EXCEPT he said he couldn't get enough head on it like the BB motors can run b/c he thought the power was down due to too small of intake ports.

I think he used SOTA SB wedge heads AND not 18 degree, 10 degree Buick, SB2.2 or "splayed valve, mini-BB" type heads so don't know if they would have helped the top end charge better or not.

AND he also said he figured 504" was just about the biggest a SB could be made..

A 4.25" b x 4.44" s = 504" motor.

And I think again that a 604" is about as big a standard deck height BB that you can make..

A 4.625" b x 4.50" s = 604" motor.

I would love to make a 4.625" x 4.375" = 588" motor using custom 6.45" long rods and a standard height block for MAX. stealth!!

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