• PS CB:
Valve Bowls Blended• PS MI:
Match Intake Port to BRODIX MG 1800 • PS Valve Job:
Competition Valve Job • Intake Valves:
2.140 x 5.290 o.a.l. – BR 81050 • Exhaust Valves:
1.600 x 5.300 o.a.l. – BR 81051 • Valve Springs:
1.550 Roller Valve Spring – PAC 1941,
255 lb Closed, 610 lb Open,
1.950 Installed Height,
.700 Maximum Lift • Retainers:
1.550 10° Titanium – MA 2398BR
(STS 18 SP X, STS 18 STD X)
1.550 10° Steel – TR 752
(18 SP X, 18 STD X) • Valve Locks:
10° Jumbo – CC 611 • Rocker Studs:
7/16 – BR 716L, AR RRS-4I • Guide Plates:
5/16 – BR 5160 • Valve Seals:
11/32 – US VS529V | • Torque Heads:
70 ft-lb• Torque Rocker Studs:
40-45 ft-lb • Intake Gaskets:
BRODIX MG 1800, COMETIC C3250 • Head Gaskets:
350 – FEL-PRO 1003, COMETIC C5399
400 – FEL-PRO 1004, COMETIC C5403 • Exhaust Gaskets:
Standard-
FEL-PRO 1406, COMETIC C5415
Spread Port-
BRODIX MG 52464 (Trim to Fit),
COMETIC C5424 • Head Studs:
ARP 234-4727
(12 pt With 3/8 Center Studs) • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points:
NGK R5671A-9
for Alcohol
NGK R5671A-8
for Racing Gas • Intake Valve Seats:
P 2.250 5/16 LIDX • Exhaust Valve Seats:
P 1.650 3/8 • Intake Valve Guides:
SH 545 11/32 P • Exhaust Valve Guides:
SH 545 11/32 PL • Spring Pockets:
1.550 Out of the Box, May Be Cut
to 1.625 – No Larger or Deeper • Valve Angle:
18° • Angle Milling:
.0065 in Per cc • Flat Milling:
.0055 in Per cc • Angle Machining:
Not Available • Pushrod Slots:
40/60 • Stud Girdle:
40/60 – BR 6440 • Rocker Arms:
Standard 7/16 Roller Rockers, or Shaft System with 40/60 Spacing • Lifters:
Standard • Pistons:
Special 18° • Pushrods:
Special Length • Intake Face Angle:
BRODIX 10° Standard • Valve Centerline:
40/60 • Intake Manifold:
HV 1800 / HV 1801 |
A customer wants to know more about the 18 degree x head, people are saying they are no good, I told I never seen a bad 18 degree head, I been porting heads for 36 years, alot was nascar related, I told him how much you want to spend and how fast you want to go, but there are nothing wrong with your heads.
Larry,
The 18° Degree X head was set up for the budget minded racer that wants to use standard lifters and standard rockers to make great power. With it’s 244-254 port volumes and 2.140 intake valves. We aren’t sure why anyone would say the head wasn’t any good. They must have had the wrong setup or haven’t used this head before. With all that being said the out-of-the-box 17° Spread Port X will flow 325 intake @ 0.700 and the cnc ported STS 18 SP X 336 Intake @ 0.700. The numbers speak for themselves.
Thanks!
Was wondering what Brodix cylinder head bare would suit my new engine build and Also a manifold to suit .Looking at a 434 small block chev and wanting around the 750 hp For Street and track use. Any help would be appreciated. Tony.
Wanting to use a 18deg cylinder head. Cheers Tony