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Engine Building, Hi Performance Please tell us about your engine builds. What component combos and horsepower output. Let's help each other build better faster engines. Ask or answer questions.

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Old 11-04-2010, 07:04 PM   #21
56owner

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Default Desktop dyno

Quote:
Originally Posted by Stingray View Post
I have a similar build but 409ci.

Block: 1976 .040 over 400 = 409ci

Heads: Vortec, mild porting exhaust side

Manifold: Air gap

Cam/rockers: Comp full roller package

Carb: Holley 660cfm, center squirter

Compression: 10.2:1

Desktop Dyno indic8s 420 horses @ 485 pounds of stump pulling torque!
TRY putting the cam in at -2 degrees
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Old 03-08-2011, 11:04 PM   #22
enigma57

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Quote:
Originally Posted by toolman770 View Post
Hi guys,
I'm new to the forum so please forgive me if this question has been answered before. First, a little background.
I'm 61 years old, and am modifying my sixth "shoe box". It's a 1957 210 2 DR. sedan, currently powered by a 235 inline, with a saginaw 4 speed (3.11 first) and a 3.70:1 positraction rear end. It also has a modified 605 power steering box, poly eurathane (sp)? bushings in all suspension points, stainless steel brake lines, stock rebuilt drum brakes, etc. etc.
However, I'm an ex dragracer, so I need more horsepower and torque. I have a '74 400 small block I wish to put in place of the six cylinder. I have a stock cast iron v-8 bellhousing and a muncie 4 speed. I want to retain the stock chevy 4 point mounting system, along with adding a rear transmission cross member and mount.
My question is: Will the 8 inch harmonic balancer, used for 400's, clear the front motor mounts as used on the 265-283? Surely, some one in this forum has built this combination and knows the answer.
I thank you in advance, toolman
Howdy, toolman and welcome to the forum!

Regarding using the original 4-point mounting system and adding a transmission crossmember and additional 5th mount...... I did that on all my small block powered '55s back in the late '60s and early '70s...... And will do that with the stroker small block I am building for my '57 sedan as well.

On the '55 - '57 front engine mounting brackets...... I have run them with an 8" harmonic balancer (torsional dampner) in the past. And though it will be internally balanced and will not use an external balance 400 dampner...... I will run an 8" (neutral balance) dampner with this engine as well.

The front engine mounting brackets will require minor clearancing on a bench grinder to gain clearance for the 8" dampner. I just clamp each mounting bracket into a large pair of vice-grip pliers and carefully work the interference point a little at a time with a lot of trial fitting until I have around 1/8" clearance to the dampner. Give 'em a good coat of engine colour paint and you're good to go.

Best regards,

Harry

Last edited by enigma57; 03-08-2011 at 11:10 PM..
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Old 03-09-2011, 12:23 AM   #23
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Just finished this build, my first ground up

350 .030 over
Speed pro 10: 1 hyp flat tops
perfect circle rings
Edelbrock Alum heads; 2.02 int and 1.60 exh
64 cc combustion chambers
cam is 230 @ .050, .512 lift on a 110 lsa
1.6 roller rockers
victor junior single plane intake
holley 770 ultimate street avenger
Petronix ingnitor III distributor
Weiand high volume water pump
Edelbrock high volume fuel pump and fuel regulator
Billet Specialties pulleys & serpentine belt
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File Type: jpg motor1.jpg (96.2 KB, 30 views)
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Old 04-07-2011, 12:56 AM   #24
Pro Fleetline
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My solid roller 406!


By profleetline at 2011-03-28

By profleetline at 2011-03-28
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Old 04-07-2011, 01:10 AM   #25
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My solid roller 406!


By profleetline at 2011-03-28

By profleetline at 2011-03-28
love the looks of it looks great....Tell me more please like whats the cost of the build? How much horsepower?
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Old 05-06-2011, 10:11 AM   #26
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Question

I have always wanted to build a 400. It certainly does have stump pulling torque. I love to hear the "car guys" talk about engines and for that matter anything about the car only to think, these guys vote also. They are definitely among us.
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Old 10-06-2012, 11:54 PM   #27
William Phillips
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Default Building a Four Hundred

I also am building a 400. Just had machine work done at ARE Performance Simi Valley CA (Rooco's Shop was mentioned in Super Chevy)

I plan on selling my 041 heads (Drilled for steam) with valves, dual springs with guides, double roller chain, comp am and lifters. Good for a 350.
[email protected]

I want to go with Scats forged rotating assembly, Flat top pistons, rods.
$1,500
TrickFlow's Super 23/ 230 heads $1,500
and a larger Comp roller cam w/ lifters. $800
Carb and intake ? I have a Weiang with a Quad

looking like $5,000
Then I can start on the body work again, 57 Belair 2drht,
M20 Four speed or I also have a Turbo 400 off a 454. Changing out to a 69 Chevelle 12 bolt with 4:10 Posi
Hopefully I know enough to make it happen?
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Old 12-15-2012, 04:01 PM   #28
Larry Thompson
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Default Horse Power

I agree with you that the HP should be around 400 or more. We are building a 350 that is rated at 420 HP. Hope you are able to run it through the 1/4 just to satisfy curiosity if nothing else. 12's would be great, but 11's would be even better. Happy Chevying,
Larry
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Old 06-24-2013, 08:50 PM   #29
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heres mine motor heads .
406 sbc 10.7-1 scat steel crank and rods
edlebrock victor jr heads with full cnc.ports to 298/230 cfm
jones custom grind solid edm cam
.555 lift 292i/296e-248/252 on 108 lc
1.60 comp stainless rockers
victor jr ported manifold with 4 hole insertlator adaptor
850 dp carb on e85 or pump gas
msd dist. and 6al box
1.75"x 3" headers into 4" expansion chamber bullets to PYPES 3" X-pipe and 3"s/s race pro mufflers with 2.5"outlets by tires .
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Old 01-19-2014, 10:45 PM   #30
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I did a similar build to that in Chevy High performance.

Theirs was a 406 mine is a 421.

Lunati cam .480 lift 230 degrees @.050

Vortec heads

Edelbrock RPM air gap

750 holley carb

1 5/8 inch headers

9.5 compression

In their 406 made 428 hp and 525 torque

I followed the build exactly except for more cubes and 1.6 roller rockers
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