All lines of heads are designed and developed by Speier Racing Heads.  Our main goal during the development process was to design heads that would simply out perform the competition.  Velocity profiling, port shape, and cfm, are keys to making power.  Great care and focus has a set of cylinder heads from Speier Racing Heads a smart and logical choice!

It is based off the USA Brodix ST5.0R core and features 2.080-2.100/1.600 valve. 

This head made 670 at 7100 and 560 at 5600 on a 427 cid pump gas engine!

Dart Iron Eagle 9.5 block
Eagle 4340 4" crank
Scat 6.200 rods
Ross 11.3-1 .043/.043/3mm pistons
Trend pins
Moroso Fox Body pan w/tray
Jesel 1.7 rockers
Trend 3/8 .160 wall push rods
Bullet 262/270 110º camshaft
PAC springs/titanium retainers
Ferrea HS 8mm valves
SV manifold matched
Stealth Racing pump gas 4150 carb

DYNO SHEET  SRHBrodix.pdf

 

PRODUCT INFO TECH INFO SRH SBC v2.50/SBF

 

4.060 Brezenski fixture
Brezenski Radius Plate
1.900 in² throat

2.08 Valve
.200 140.4
.300 196.4
.400 241.1
.500 273.2
.600 295.9
.700 311.4
.800 321.2
.900 324.2
1.00 328.8

 
Runner Volume 225cc
Chamber 68cc (milling available)
Valve Size 2.080/1.600
Seat Angles 45º Intake 45º Exhaust
Minimum CSA 2.50in²
Intake Opening Fel-Pro 1262

 

SRH SBF v2.50/SBF Aluminum CNC Cylinder Head

  

PACKAGE #1- PS824 11/32 Stainless Valves, .680 Roller Spring, FT  or HYD  Erson springs. (see chart below)  USA Chrome Molly Retainers, USA  machined locks, USA locators, USA 190,000    PSI studs, USA guide plates.  Metal clad seals.  Heads are valve jobbed, decked,  and bagged for assembly.

$2395.00

PACKAGE #2- PS824 11/32 stainless valves, .750 Erson Cyloy Roller Springsº, Titanium Retainers,  USA machined locks, USA locators, USA 190,000 PSI studs, USA guide plates, metal clad seals.  Heads are valve jobbed, milled, and bagged for assembly.

$2595.00

Packages are available with 5/16 or 8MM valves.  However upgraded valves must be used.

 
Bare w/VJ CALL
Package Upgrades Add:
Ferrea Valves $175

REV Valves

$130
PAC Dual Springs $175
Victory Ti17 Titanium Retainer $230
REV Ti17 Titanium Retainer $195
USA Titanium Retainer $175
**HYD Spring/TI Retainer $200

*1225/1226/1243 PAC Assemblies (other available)

**upgrade includes Alpha wire 1.26 diameter springs w/titanium retainer.

 

ºoptional

 SPRING PICTURE

 

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