Cylinder Heads Chevy 190cc Aluminum Assembled

Description

Blacklabels SB Chevy, 190cc, 64cc

ALUMINUM Cylinder Heads-(Pair) Assembled.

 Chevy Small Block 327/350/383/400 5.7L 

No 400 Steam Holes!

 Street, Performance, Short Track, Restricted Oval up to 6500rpm. 

This Pair of Blacklabel’s Factory New Aluminum cylinder heads offer these features;

Aircraft grade 356A Aluminum Alloy heat treated to T-6 specifications, 

23 Degree Valve Angle,  High Flow 190cc Intake Ports 

1.125″ Wide x 2.230″ Tall Intake Openings

64cc Combustion Chamber, Open Chambers , Fits All OEM Bolt Pattern Manifolds 

7 Bolt Exhaust Flange,  Square Port Exhaust

Centerbolt and Outside Valve Cover Bolt Patterns,

Bronze Valve Guides,  Angled Plugs (use AGF-22), Hardened Valve Seats

 3 Angle Cut Stellite Valve Seats

Seats are Machined for 2.020″/+0.100 & 1.600″/+0.100 Valves,   11/32″ stem

400″ thick deck can be milled down to 54cc.

Spring Pocket can be cut to 1.625-no deeper! 

 Heads are drilled with all OEM accessory bolt holes  

 Assembled features Include;

Dual Springs 1.450″od

  Intake Valves #4304  2.020″/ +0.100/ 5.040 (11/32″ stem) 

 Exhaust Valves # 4302  1.600″/+0.100/ 5.065 (11/32″ stem)

4140 Steel Retainers 1.400 x 1.060 x 0.690

Valve Locks +.90

 Installed Spring Height-Intake 1.821 / Exhaust 1.806, Diameter 1.440″

Spring: Intake, 130lbs @ 1.820    Exhaust, 145lbs @ 1.760,  

Assembly Specifications
Max Lift: .600″
Coil Bind: .740″
Intake Install: 130lbs @ 1.8
Exhaust Install: 130lbs @ 1.8
Closed Sear Pressure: 110lbs
Open Seat Pressure: 300lbs

Uses FelPro Head Gasket #1003,  Vortec manifold use Felpro #1255 gaskets, 

Conventional Intake Use Fel-pro # 1266, Exhaust Gasket Fel-Pro #1405 

 All Speedmaster 23deg. SBC heads use standard 14mm. x 750″ reach, 5/8 hex, gasket seat sparkplug

   Installed spring height should be checked with your camshaft spescs of your application.

Flows: Test Data @28″ of water, (according to manufacturer).

Lift	100	200	300	400	500	600	700
INTAKE	58.0	113.5	159.2	199.7	227.6	244.2	248.3
EXHAUST	52.0	97.8	132.94	161.90	180.00	189.20	192.10