which are the best 400 castings? - Team Camaro Tech
Engine General Engine Discussion.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old Jan 5th, 06, 02:58 PM Thread Starter
Senior Tech
Dave
 
Join Date: Dec 2001
Location: Long Island, NY
Posts: 595
which are the best 400 castings?

which are the best 400 castings?

68 Z/28, grotto blue, protect-o-plate
67 plain jane survivor, deep water blue, protect-o-plate
SooperDave is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old Jan 5th, 06, 03:23 PM
Senior Tech
 
Join Date: Dec 2003
Location: Victoria, BC
Posts: 1,357
Re: which are the best 400 castings?

The 509 casting's are very good , they are two bolt main and good to around 500 to 550 horse maybe more if you want to fill it .
Mark .

pictures can be viewed at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mark .L.W. is offline  
post #3 of 16 (permalink) Old Jan 5th, 06, 03:55 PM
 
Join Date: Oct 2005
Posts: 477
Re: which are the best 400 castings?

I would take either 817 or the 509 is the core shift wasn't bad and stick with the 2 bolt for the 500hp range. 4 Bolts id be cautious when I passed 400hp. I have seen the entire crank pull out every stud in a 4 bolt. And yes it was studded not splayed though. But he was roughly 600hp and heavy on the bottle.
TexasPerfProd is offline  
 
post #4 of 16 (permalink) Old Jan 5th, 06, 04:22 PM Thread Starter
Senior Tech
Dave
 
Join Date: Dec 2001
Location: Long Island, NY
Posts: 595
Re: which are the best 400 castings?

what about the 511's?
4-bolt mains from 70-73? are they garbage?

68 Z/28, grotto blue, protect-o-plate
67 plain jane survivor, deep water blue, protect-o-plate
SooperDave is offline  
post #5 of 16 (permalink) Old Jan 5th, 06, 04:44 PM
Senior Tech
Sean
 
Join Date: Feb 2002
Location: N.W. Washington
Posts: 7,963
Re: which are the best 400 castings?

dont get too caught up in casting numbers, imo.
the most important thing with them is little or no core shift, and the 2 bolts are preferred because the main web is more stout than the 4 bolts. the best bet with a factory block is a two bolt block with splayed 4 bolt caps, no core shift. after about 550 horse or so (yes many people have gone much more) i'd go with an aftermarket block.
unless a great factory std bore 400 falls in my lap (that would hafta hurt), my next motor will utilize a world or dart block.
as always, jmo.

Sean

1968 rs with an old school 354" SB2.2 pump gas motor.

Repetition does not transform a lie into a truth.

Franklin D. Roosevelt
68rs406 is offline  
post #6 of 16 (permalink) Old Jan 5th, 06, 05:46 PM
Senior Tech
 
Join Date: Dec 2003
Location: Victoria, BC
Posts: 1,357
Re: which are the best 400 castings?

I went with the Dart litte M with the billet caps , after looking for a good block and still not finding one just spend the money and be done with it .
Mark .

pictures can be viewed at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mark .L.W. is offline  
post #7 of 16 (permalink) Old Jan 5th, 06, 06:22 PM
Senior Tech
Dave
 
Join Date: Dec 2005
Location: Tampa, Florida
Posts: 4,679
Re: which are the best 400 castings?

I was the proud owner of a '509 block which I had owned for a number of years and driven it into the ground. I built my 406 around this block for two reasons. I already had one, and I was supposed to be rebuilding this engine instead of heaven forbid buying another race car motor (otherwise I would have opted for a Dart Little M or sportsman block). I have included a portion of my build sheet for the motor covering machine work for reasons of comparison. The costs in your area may vary.

Cost for Machine work at A&S Motorsport Riverview (Paid $800 deposit 26May05)
Strip old block (freeze plugs & dipstick tube) 26.00
Bake old block at 650°F for six hours 68.00
Magnuflux™ for cracks 35.00
Install splayed cap steel main cap: align bore, and then align hone block 400.00
Deck square 0.015" 120.00
Bore my old 400 SBC stock 2 bolt main block 0.030" over with deck plates 160.00
Install cam bearings 30.00
Tap three front oil galleries for pipe plugs 10.00
Drill steam holes in heads 30.00
Hand wash block and steam clean 20.00

Total $899.00
Dyno cell time averaging 8 pulls (includes break-in and set up) $375.00

Below is a note to myself as I was shopping around for machine shop services in town. Gil is the proprietor and has five Wally's on the wall along with three framed NHRA SS national records from motors he has built (though most of his business comes from that other sanctioning body Nasfar or something other claiming to be stock cars).

Gil at A&S doesn't recommend Milidon main cap conversion on the 400 SBC because there is sufficient main cap restraint provided by the bottom end girdle to support up to 500hp. Recommends 2 bolt block over the 4 bolt block because of increased nickel content in casting makes block stronger, and has more meat in the main webbing than earlier blocks. The '509 casting is the best (has only two freeze plugs in side of block); but '817 casting (three freeze plugs cast in side with only two actually machined for use) is his next best choice.

Larger Dave (Satisfied Customer)
Larger Dave is offline  
post #8 of 16 (permalink) Old Jan 5th, 06, 06:47 PM
Banned
 
Join Date: Dec 2003
Location: NORTH EAST
Posts: 938
Re: which are the best 400 castings?

Quote:
Originally Posted by Mark .L.W.
I went with the Dart litte M with the billet caps , after looking for a good block and still not finding one just spend the money and be done with it .
Mark .

Wise choice over the 30 years building engines and machining blocks we have seen more issues with the 400 blocks then the dart and Bow-tie blocks at our shop we can probe the blocks out for cylinder locations, lifter bore locations and cam tunnel location and from what I have seen on these blocks the after market blocks are a lot closer to blue print which in turn will make more power over a stock block that is out of blue print.

The last 400 block we machined with all the bells and whistles ran 1295.00 and for 2395.00 you can buy a Dart all machined ready to go and is much more dependable then any 400 block.

Before machining on a 400 block spend the extra money and have the cylinders sonic tested for thickness as we have seen some issues with those blocks in that department.
CNC BLOCKS N/E is offline  
post #9 of 16 (permalink) Old Jan 5th, 06, 08:11 PM
Senior Tech
 
Join Date: Dec 2003
Location: Victoria, BC
Posts: 1,357
Re: which are the best 400 castings?

In one article Joe Sherman did , He said two motors being the same , the one using the Dart block made around 20 HP more than the stock block did .

pictures can be viewed at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mark .L.W. is offline  
post #10 of 16 (permalink) Old Jan 5th, 06, 09:17 PM
Banned
 
Join Date: Dec 2003
Location: NORTH EAST
Posts: 938
Re: which are the best 400 castings?

Quote:
Originally Posted by Mark .L.W.
In one article Joe Sherman did , He said two motors being the same , the one using the Dart block made around 20 HP more than the stock block did .
I can under stand that happening.

Thats good info thanks
CNC BLOCKS N/E is offline  
post #11 of 16 (permalink) Old Jan 5th, 06, 09:40 PM
 
Join Date: Oct 2005
Posts: 477
Re: which are the best 400 castings?

Quote:
Originally Posted by Mark .L.W.
In one article Joe Sherman did , He said two motors being the same , the one using the Dart block made around 20 HP more than the stock block did .
I read that artice somewhere myself. But if your buying it to gain power your not getting the best bang for your buck. The power gain is just a added benifit. 20hp for $2000.00 is expensive for street/strip hp. A Prostock engine is a whole different ball of wax. The idea of the motor staying together is the reason for paying several grand for the block. IMHO
TexasPerfProd is offline  
post #12 of 16 (permalink) Old Jan 6th, 06, 06:54 AM Thread Starter
Senior Tech
Dave
 
Join Date: Dec 2001
Location: Long Island, NY
Posts: 595
Re: which are the best 400 castings?

Thanks for all the info - very helpful as usual

68 Z/28, grotto blue, protect-o-plate
67 plain jane survivor, deep water blue, protect-o-plate
SooperDave is offline  
post #13 of 16 (permalink) Old Jan 7th, 06, 08:30 AM
Senior Tech
 
Join Date: Jun 2005
Location: Alabama
Posts: 195
Send a message via Yahoo to shooterpcb
Re: which are the best 400 castings?

I have one of those 400 511 casting blocks sitting in my barn. I didnt know it was not a desirable block. It is standard everything. I was saving it but after reading this Im not so sure Im gonna keep it now.

"There are two ways to do this... My way and the Wrong way." - Dale Earnhardt '99

Neil

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
shooterpcb is offline  
post #14 of 16 (permalink) Old Jan 7th, 06, 05:48 PM
Senior Tech
mike
 
Join Date: Mar 2005
Location: Alabama
Posts: 1,673
Re: which are the best 400 castings?

Consider this: How many ol' Chevy Impala's (70-73) do you see still around w/400 engine still going strong? I saw one (impala) couple days ago but there everywhere here in the South. I have a built 400 4bolt main also that does just fine.
Hogdaddy is offline  
post #15 of 16 (permalink) Old Jan 7th, 06, 05:57 PM
Senior Tech
Dave
 
Join Date: Dec 2005
Location: Tampa, Florida
Posts: 4,679
Re: which are the best 400 castings?

Never mind the Impalas, Estate (trailer park) Wagons; I've never seen one with out 400 emblems and they are everywhere here also. Have to go out to the more rural areas, but there are one or two in every trailer park.

Not so politically correct
Larger Dave
Larger Dave is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome