a really kick butt and take names 406 sbc combo

grumpyvette

Administrator
Staff member
BASIC COMPONENTS, obviously you don,t have to use the exact parts listed but the more you change things the less likely you are to have near the same results, and with you doing the assembly and careful shopping you might bring the price down slightly on either build

after building DOZENS of similar 377 and 406 SBC engines, over the last 40 plus years and seeing what works and how
the newer aftermarket heads far exceed the older stuff we used to have to use,
for those engine builds, guys I can assure you that the peak hp will remain rather similar,

if both engines are built to similar specs , theres several great heads available, your choice is mostly dependent on your checking account balance and your personal mechanical skill and knowledge, on how you select and assemble a valve train.
but your almost always faster with the 406 combo because the slightly higher average torque curve.
I've tried dozens of combos , but keep in mind your drive train gearing and car weight and converter stall speed and if you have an auto transmission, and need to pass emission testing, and if the combos injected or runs a carb, and if you want to run pump octane fuel or race octane gas ,obviously effect your choices a great deal.
two common mistakes are not having a low restriction exhaust and well designed headers and having the wrong cam for the compression ratio and gearing
but the most common seems to be buying restrictive heads and intakes, if your looking to get a 377-406 to peak power levels,.
the combo below is obviously not meant to be a daily driver combo, that runs on pump octane swill.

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heads
http://www.summitracing.com/parts/TFS-3240T001-C03/ $2200
super23.jpg


IF YOU HAVE A SET OF REALLY DEEP POCKETS
http://www.speierracingheads.com/SRH2.50.htm
SAFE piston speeds are best restricted to 4000fpm for stock components and 4500fpm for the better common aftermarket components



rockers
http://www.summitracing.com/parts/TFS-31400522/ $280

intake
http://www.summitracing.com/parts/HLY-300-110/ $266
hly-300-110.jpg


block
http://www.summitracing.com/parts/DRT-31152211/ $2200
drt-31131111_w.jpg

rotating assembly
http://www.lunatipower.com/Product.aspx?id=361&gid=186 $3400
Pro Assembly - SBC 406ci 11.7:1 6.000 H-beam
Product Description

Lunati pro engine assembly for Chevrolet small block applications featuring Lunati's 4340 H-beam rods

Displacement: 406ci
Compression: 11.7:1
Bore: 4.155 in.
Stroke: 3.750 in.
Rod Length: 6.000 in.
Crank Part Number: AJ211DN
Main Seal: 2-piece
Rod Part Number: 6000H
Piston Part Number: WISPT020H3
Dome Volume: -5.4 cc
Compression Height: 1.125 in.
Ring Sizes: 1/16-1/16-3/16
Ring Part Number: WIS4155H x 8
Main Bearings Part Number: MB5143HP
Rod Bearings Part Number: CR848HP

cam & kit
http://www.cranecams.com/product/cart.p ... il&p=24572 CAM $400
118741crane.jpg


carb
http://www.holley.com/0-80514-1 $820

match too 8 quart baffled oil pan that fits your chassis, and Competition headers with 17â„8" primaries,37-39" long and a 3.5" collector 18" long
personally Id use a vertex magneto ignition , figure oil pan $400

http://www.taylorvertex.com/Vertex/pdfs ... Vertex.pdf
http://www.jegs.com/i/Vertex/830/701000 ... tId=749035 ($1030)


THIS IS DYNO SOFTWARES WILD GUESS ID BET I COULD TWEAK IT TO GET A BIT MORE FLYWHEEL HP
406trickflow23.jpg



heres the same engine with a 100hp worth of nitrous
http://www.jegs.com/i/Nitrous+Express/7 ... 0/10002/-1 $450
trickflow23super100shot.jpg


MISCELLANEOUS COMPLETION PARTS FIGURE $2800 more


so a really nice SBC combo making near 750 dependable hp in a similar combo costs about $13,300
 
Last edited by a moderator:

grumpyvette

Administrator
Staff member
kick butt and take names 406 sbc combo vs similar 556bbc

BASIC COMPONENTS, obviously you don,t have to use the exact parts listed but the more you change things the less likely you are to have near the same results, lets do a killer BIG BLOCK using similar cost parts
heads
http://www.summitracing.com/parts/TFS-4140T808/?rtype=5 $2460
360trickflow.jpg

rockers
http://www.summitracing.com/parts/TFS-41400621/ $280

intake
http://www.jegs.com/i/Brodix/158/HV2000/10002/-1 $366
158-HV2000_3.jpg


block
http://www.jegs.com/i/Dart/301/31273444/10002/-1 $2200
301-31263354.jpg


rotating assembly

http://www.lunatipower.com/Product.aspx?id=361&gid=186 $$3,828.48
Pro Assembly - BBC 565ci 10.9:1 6.385 H-beam
Product Description

Lunati Pro Series™ rotating assemblies feature only the very best components such as Wiseco® forged pistons, hi-tensile plasma pre-gapped 1/16-1/16-3/16 rings, either H-beam or fully machined I-beam connecting rods, bearings, and a Pro Series™ crankshaft, all internally balanced.Lunati pro engine assembly for Chevrolet big block applications featuring Lunati's 4340 H-beam rods

Displacement: 565ci
Compression: 10.9:1
Bore: 4.600 in.
Stroke: 4.250 in.
Rod Length: 6.385 in.
Crank Part Number: BP421IN
Main Seal: 2-piece
Rod Part Number: 6385H
Piston Part Number: WISPT102H100
Dome Volume: 15 cc
Compression Height: 1.270 in.
Ring Sizes: 1/16-1/16-3/16
Ring Part Number: WIS4600H x 8
Main Bearings Part Number: MB5147HP
Rod Bearings Part Number: CR849HP

Part Number: EA565H

Jobber Price: $3,828.48
cam & kit
http://www.cranecams.com/product/cart.p ... il&p=24572 CAM $400
crane%20138681.jpg


carb
http://www.holley.com/0-80514-1 $820

match too 8 quart baffled oil pan that fits your chassis, and Competition headers with 2 1⁄8" primaries,37-39" long and a 3.5" collector 18" long
personally Id use a vertex magneto ignition , figure oil pan $400

http://www.taylorvertex.com/Vertex/pdfs ... Vertex.pdf
http://www.jegs.com/i/Vertex/830/701000 ... tId=749035 ($1030)


THIS IS DYNO SOFTWARES WILD GUESS ID BET I COULD TWEAK IT TO GET A BIT MORE FLYWHEEL HP
556%20bbc.jpg



heres the same engine with a 100hp worth of nitrous
http://www.jegs.com/i/Nitrous+Express/7 ... 0/10002/-1 $450
556bbcnitrous.jpg


MISCELLANEOUS COMPLETION PARTS FIGURE $2800 more


so a really nice BBC combo making near 900 dependable hp in a similar combo costs about $14,900
 

NewbVetteGuy

Well-Known Member
SBC 406 combo: Updated Price Info:

Grumpy, your 406 recommendation is great, but there's been some big price changes post-COVID that MIGHT alter your recommendation on heads for your kick-butt 406 build.

Summit now sells the TFS 230cc head for $2,489.98 for a pair.
Chad Speier has also taken his CNC program for his 2.4" min CSA, expensive V-Factor head and has applied it to Profiler 195cc heads and released it as a 220cc "Street" / SFactor (2.5" min CSA, 2.46" avg CSA) head with all parts for $2,450.

It seems to be the performance bargain at around this price level now, AFAIK; it's also up on the TFS head by about 28 CFM @ .650" lift AND with 10cc less port volume to boot!

4.155 fixture
.200 147/112
.300 202/143
.400 257/173
.500 298/194
.550 314/203
.600 326/209
.650 328/215
.700 329/221
.800 331/226
.900 332/230
1.00 333/233



Adam
 
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