Building 406 SBC for Drag Wars 2009 - Chevelle Tech
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post #1 of 106 (permalink) Old Oct 28th, 08, 11:22 PM Thread Starter
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Building 406 SBC for Drag Wars 2009

Started talks with Cars Race Engines for a new 406 SBC.
Should start building this week.

Block and rotating assembly.
Mahle Powerpak piston/ring kit, flat top approx 11.25:1 compression.
Clevite H series rod and main bearings.
Cloyes true roller timing set.
Scat 7/16 rods (Pro Comp with 7/16 capscrews/profiled beams/bushed).
Scat 4340 forged std weight crank, 3.75 stroke.
400 Block bored 30 over, block cleaned/magged.
Torque plate bore/hone.
Complete balancing incl mallory to internal front of crank, within a half gram.
Size/polish crank post balance.
Trial assemble, clearance block and rods, measure deck heights
Square deck block to .005" negative.
Melling M select 10553 oil pump c.w hd drive.
ARP main bolt set.


Cam Mechanical Flat Tappet
Comp 288TLS-6 cam. ADVERTISED 288in 296ex / @ .050 259in 266ex / Lift .550in .570ex 106
Not sure about the lifters yet.

Heads.
AFR 195's or maybe 210's

Need some help picking a 7 qt pan low profile oil pan that will fit in a 69 Chevelle.
Also the headers I have are FlowTech 11100FLT 1-5/8x3 / Primary Tube Size 1.625", Collector Size 3".
Should I keep these headers or upgrade to ?????

Engine will be dynoed when completed.
Any guess of some power numbers?

2012 GMC Terrain
2011 Chev Silverado
2004 Chev Silverado
1969 Chevelle Malibu 406 SB

http://www.chevelles.com/forums/142-projects-builds/386745-mikeys69-chevelle.html

Some day I will own a 1967 Chevelle, again.
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post #2 of 106 (permalink) Old Oct 28th, 08, 11:27 PM
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Dave 383 now
 
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Re: Building 406 SBC for Drag Wars 2009

Headers are small for those cubes and high flowing heads. 1 3/4 would work nicer.

I like the Moroso 20180 oil pan
6 quarts not a wedge style , fits headers easier.

Dave
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post #3 of 106 (permalink) Old Oct 29th, 08, 12:55 AM
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Butch
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by big_red View Post
Started talks with Cars Race Engines for a new 406 SBC.
Should start building this week.

Block and rotating assembly.
Mahle Powerpak piston/ring kit, flat top approx 11.25:1 compression.
Clevite H series rod and main bearings.
Cloyes true roller timing set.
Scat 7/16 rods (Pro Comp with 7/16 capscrews/profiled beams/bushed).
Scat 4340 forged std weight crank, 3.75 stroke.
400 Block bored 30 over, block cleaned/magged.
Torque plate bore/hone.
Complete balancing incl mallory to internal front of crank, within a half gram.
Size/polish crank post balance.
Trial assemble, clearance block and rods, measure deck heights
Square deck block to .005" negative.
Melling M select 10553 oil pump c.w hd drive.
ARP main bolt set.


Cam Mechanical Flat Tappet
Comp 288TLS-6 cam. ADVERTISED 288in 296ex / @ .050” 259in 266ex / Lift .550in .570ex 106º
Not sure about the lifters yet.

Heads.
AFR 195's or maybe 210's

Need some help picking a 7 qt pan low profile oil pan that will fit in a 69 Chevelle.
Also the headers I have are FlowTech 11100FLT 1-5/8”x3” / Primary Tube Size 1.625", Collector Size 3".
Should I keep these headers or upgrade to ?????

Engine will be dynoed when completed.
Any guess of some power numbers?
Mike,
Would you be willing to go solid roller to take full use of that power?

There is a 406 that was built with a package almost identical to what your running and with the cam i suggest it would have made a little better TQ, 11.5:1 406 that made 615hp @ 6,500rpm and made 548tq @ 5,300rpm

Custom Crane
290/306 @.020" 260/268 @.050" .670/.625 106°
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post #4 of 106 (permalink) Old Oct 29th, 08, 1:09 AM
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Jeff
 
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Re: Building 406 SBC for Drag Wars 2009

sounds like a nice build.

78 Malibu 402, 4L60E, 3:70 9"
74 vega wagon, 4.3L th350, 4k stall, ladder bar, mini tub, 12bolt 4.56 spool.
68 VW baja 1600cc.
2016 honda civic coup 2.0L 6 speed. 17's kocking on 16.99 lol
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post #5 of 106 (permalink) Old Oct 29th, 08, 1:13 AM
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Butch
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by big_red View Post
Started talks with Cars Race Engines for a new 406 SBC.
Should start building this week.

Block and rotating assembly.
Mahle Powerpak piston/ring kit, flat top approx 11.25:1 compression.
Clevite H series rod and main bearings.
Cloyes true roller timing set.
Scat 7/16 rods (Pro Comp with 7/16 capscrews/profiled beams/bushed).
Scat 4340 forged std weight crank, 3.75 stroke.
400 Block bored 30 over, block cleaned/magged.
Torque plate bore/hone.
Complete balancing incl mallory to internal front of crank, within a half gram.
Size/polish crank post balance.
Trial assemble, clearance block and rods, measure deck heights
Square deck block to .005" negative.
Melling M select 10553 oil pump c.w hd drive.
ARP main bolt set.


Cam Mechanical Flat Tappet
Comp 288TLS-6 cam. ADVERTISED 288in 296ex / @ .050” 259in 266ex / Lift .550in .570ex 106º
Not sure about the lifters yet.

Heads.
AFR 195's or maybe 210's

Need some help picking a 7 qt pan low profile oil pan that will fit in a 69 Chevelle.
Also the headers I have are FlowTech 11100FLT 1-5/8”x3” / Primary Tube Size 1.625", Collector Size 3".
Should I keep these headers or upgrade to ?????

Engine will be dynoed when completed.
Any guess of some power numbers?
Also make sure your rings are:
Top ring - 1.2mm or .043"
Second Ring - Napier from Total Seal
*Oil Ring - use a 9 pound oil ring

* Use a 9 pound oil ring ONLY if you have a header e-vac or better. You can use less but you have to find that fine line, i have had engines that are fine with 7 pound but you have to start around 9 and work down from there unless you have a vacum pump

Your gonna need 1 3/4" headers or 1 3/4" stepped to 1 7/8" because of the cubes and airflow your moving

Your gonna need about 4,800rpm stall and gear the thing accordingly

I think you should be able to make 600-620hp and 500-560tq. I would probally do skirt coatings if the pistons dont have them but TBC's i cant say

Note: I dont use their pistons {no bad reason, just have good luck with what i use now}, If your gonna keep it N/A see if they offer an .031" Dykes ring groove !!
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post #6 of 106 (permalink) Old Oct 29th, 08, 8:36 AM Thread Starter
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Re: Building 406 SBC for Drag Wars 2009

Thanks for the input guys. I will pass along the information.
The only other real worry I have is with the block.
Using a old factory block. I'm thinking a 4 bolt main 350 block would be stronger than a 400 2 bolt main block. If this is the case. We need to do something with the main caps. Or scale down the build to a 383.

2012 GMC Terrain
2011 Chev Silverado
2004 Chev Silverado
1969 Chevelle Malibu 406 SB

http://www.chevelles.com/forums/showthread.php?t=386745

Some day I will own a 1967 Chevelle, again.
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post #7 of 106 (permalink) Old Oct 29th, 08, 11:39 AM
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Carl
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by big_red View Post
Thanks for the input guys. I will pass along the information.
The only other real worry I have is with the block.
Using a old factory block. I'm thinking a 4 bolt main 350 block would be stronger than a 400 2 bolt main block. If this is the case. We need to do something with the main caps. Or scale down the build to a 383.
If you have a good 2 bolt block you can have the caps splayed.
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post #8 of 106 (permalink) Old Oct 29th, 08, 11:43 AM
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Jerry
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by chevguy65 View Post
If you have a good 2 bolt block you can have the caps splayed.
I am not sure what cost the splayed caps would add to the machining but it must be getting awful close to the price of that new Dart SHP block

Jerry
65 Beaumont
L96 6 Liter
Straub hyd. roller
Tremec 5 speed



http://www.chevelles.com/showroom/da...e_Rims_014.jpg


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post #9 of 106 (permalink) Old Oct 30th, 08, 3:11 PM
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Doug
 
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Re: Building 406 SBC for Drag Wars 2009

Looks like Big Red made the correct choice, going 406 but it looks like I won't have to work with old iron on this job.

A link to what is currently sitting on a table at my shop, what a piece of American made ART.
http://www.dartheads.com/news_article_view.php?nak=33

Crank and rods will be Scat forged, pistons will be Pro Tru 13 cc dish forged (Wiseco) and bore will be 4.155. Shooting for 10.5:1 pump gas friendly compression ratio.
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post #10 of 106 (permalink) Old Oct 30th, 08, 3:20 PM Thread Starter
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by rustbucket79 View Post
Looks like Big Red made the correct choice, going 406 but it looks like I won't have to work with old iron on this job.

A link to what is currently sitting on a table at my shop, what a piece of American made ART.
http://www.dartheads.com/news_article_view.php?nak=33

Crank and rods will be Scat forged, pistons will be Pro Tru 13 cc dish forged (Wiseco) and bore will be 4.155. Shooting for 10.5:1 pump gas friendly compression ratio.

And this is the best part. The SHP block will easliy support 600 horsepower

2012 GMC Terrain
2011 Chev Silverado
2004 Chev Silverado
1969 Chevelle Malibu 406 SB

http://www.chevelles.com/forums/showthread.php?t=386745

Some day I will own a 1967 Chevelle, again.
Mikeys69 is offline  
post #11 of 106 (permalink) Old Oct 30th, 08, 3:21 PM
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Butch
 
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Posts: 10,051
Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by rustbucket79 View Post
Looks like Big Red made the correct choice, going 406 but it looks like I won't have to work with old iron on this job.

A link to what is currently sitting on a table at my shop, what a piece of American made ART.
http://www.dartheads.com/news_article_view.php?nak=33

Crank and rods will be Scat forged, pistons will be Pro Tru 13 cc dish forged (Wiseco) and bore will be 4.155. Shooting for 10.5:1 pump gas friendly compression ratio.
That 260/268 @.050" .670/.625 106 would work fine

What about bumping up to 11:1 with aluminum heads as thats probally what he will run
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post #12 of 106 (permalink) Old Oct 30th, 08, 3:45 PM
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Doug
 
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Re: Building 406 SBC for Drag Wars 2009

I would gladly have used the Mahle flat tops, (11.5:1) but 2 things come to mind. Street driving this could work on 94 octane, but everything has to be perfect or it can be detonated to death. Also, leaded gasoline is no longer available to us in the north as of Jan 2010.

10.5:1 is a safe comprimise, and if he needs more power in the future he can always spin it higher with a big honkin solid roller/tunnel ram deal, or the easier route, a 150 shot of spray.
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post #13 of 106 (permalink) Old Oct 30th, 08, 5:30 PM
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Jerry
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by rustbucket79 View Post
Looks like Big Red made the correct choice, going 406 but it looks like I won't have to work with old iron on this job.

A link to what is currently sitting on a table at my shop, what a piece of American made ART.
http://www.dartheads.com/news_article_view.php?nak=33

Crank and rods will be Scat forged, pistons will be Pro Tru 13 cc dish forged (Wiseco) and bore will be 4.155. Shooting for 10.5:1 pump gas friendly compression ratio.

Big thumbs up to you Big Red and you have a good guy there in Doug to help bring it to life

Jerry
65 Beaumont
L96 6 Liter
Straub hyd. roller
Tremec 5 speed



http://www.chevelles.com/showroom/da...e_Rims_014.jpg


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post #14 of 106 (permalink) Old Oct 30th, 08, 5:34 PM
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Jerry
 
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Re: Building 406 SBC for Drag Wars 2009

Big red, are you going with a hydraulic roller cam? or ??

Jerry
65 Beaumont
L96 6 Liter
Straub hyd. roller
Tremec 5 speed



http://www.chevelles.com/showroom/da...e_Rims_014.jpg


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post #15 of 106 (permalink) Old Oct 30th, 08, 5:35 PM
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Butch
 
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Re: Building 406 SBC for Drag Wars 2009

Quote:
Originally Posted by rustbucket79 View Post
I would gladly have used the Mahle flat tops, (11.5:1) but 2 things come to mind. Street driving this could work on 94 octane, but everything has to be perfect or it can be detonated to death. Also, leaded gasoline is no longer available to us in the north as of Jan 2010.

10.5:1 is a safe comprimise, and if he needs more power in the future he can always spin it higher with a big honkin solid roller/tunnel ram deal, or the easier route, a 150 shot of spray.
Wow, I didnt know that !!

You could always approach it like a super stocker, high 300gram to low 400gram flat top pistons and a cam like the one i said or just a tad bit bigger

With that 260/268 @.050" 106 .670/.625 i dont see any reason it wont push 580hp @ 10.5:1
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