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Hemi Blocks

TFX  Cast and Billet Aluminum

Oil pan rail on the windage side is moved out 1 inch to minimize damage with rod failure, also moved up to allow for more space to work. Oil gallery is between lifter bores to improve oiling over stock block ( it incorporated oil galleries with lifter bores) and  supposedly an improvement over KB gallery on side of block that was inline with rod damage. Raised .250 /48 degree camshaft
"92" -special 92 oil pan and timing cover/ gear drive, lifter spacing is 1.8"/std. or 2.0"/spread,
426/std or 2.249/large camshaft, 2 bolt front and rear main caps.
"96"/early -special 96 and 2000/2 oil pan and timing cover, lifter spacing is 1.8"/std., 1.9"/spread
 or 2.0"/spread,426/std or 2.249/large camshaft, 2 bolt front and rear main caps.
Light weight option available. 
"96"/late -special 96 and 2000/2 oil pan and timing cover, Lifter spacing is 1.8"/std., 1.9"/spread 
or 2.0"/spread,426/std or 2.249/large camshaft, 2 rear main caps and 2 through 5 caps are wider.
 Light weight option available. 
"2000"  Billet Block (forged) -special 96 and 2000/2 oil pan and timing cover, lifter spacing is 1.9"/spread or 2.0"/spread, 2.249/large camshaft, all main caps are  4 bolt (cross bolts).
 Light weight option available. 
"2002"  Billet Block (forged) -special 96 and 2000/2 oil pan and timing cover, lifter spacing is 1.9"/spread or 2.0"/spread, 2.249/large or 60mm camshaft, 5 main caps have fine thread tie bolts, 2 through 5 are wider with 4.400" stud spacing (4.1" on earlier blocks) these blocks also come with H11 studs, oiling to heads is upgraded , both banks have direct oiling from main gallery and require gallery retractors, Light weight option includes a smaller od sleave ( 4.440/4.410 ) standard blocks have same sleaves as earlier blocks ( 4.550/4.490 ) 

Billet main caps and 5/8 main studs
Lifter bore centers from 1.800(std)  to 2.200
Lifter bore .904 (std),  1" ,  1.062"
 +.250 raised cam location - 48 degree
Std cam diameter , large diameter ( 2 1/8, 60mm, or 65mm )
 Main journals 2.750 (std) or 3.00
Bore sizes from 4.187 to 4.500


This example has been fully machined and lightened


This example has not been machined but note a water fitting on exterior of block

 A - tfx block is shorter and wider on bottom than original design
 B - Front gear drive is partially built in for increased strength front of block is longer
 C - starter pocket / optional  ( but you can get around that  problem . CLICK HERE )


 

The inside of this solid block has been partially machined to have a water jacket in the top part of sleeve area, it can be incorporated into a cooling system


 Gear drive is Partially built into block , basically a cover , gear shaft is supported in block itself. This is not interchangeable
 with other blocks ( RCD and TFX make gear drives )

TFX 2002 FORGINGS (STANDARD & LIGHTWEIGHT) MAIN CAP TORQUE
160 LBS ON MAIN CAP NUTS (WITH H-11 MAIN STUDS)
80 LBS ON FRONT AND REAR SIDE BOLTS
100 LBS ON SIDE CENTER BOLTS

TFX 2002 FORGINGS ARE SUPPLIED WITH 5/16-18 X 1/2 X .045 OIL RESTRICTORS.
INSTALL ONE OIL RESTRICTOR PER SIDE.

MAXIMUM TORQUE WHEN INSTALLING HEAD OR MAIN STUDS IN BLOCK SHOULD NOT EXCEED 50 FT. LBS. CYLINDER HEAD TORQUE SHOULD NOT EXCEED 140 FT. LBS ON 9/16 STANDARD STUDS,120 FT. LBS ON 1/2 STANDARD STUDS OR 160 FT. LBS ON 9/16

H-11 STUDS.
ALWAYS CHECK PUSHROD AND LIFTER CLEARENCE IN THE BLOCK, EXTRA MACHINING FOR CLEARENCE MAY BE NEEDED IN SOME CASES. CLEAN ALL TAPPED HOLES THOROUGHLY. USE EXTREME CAUTION WHEN INSTALLING STUDS IN BLIND HOLES. EXCESSIVE AMOUNTS OF OIL MAY CAUSE A HYDRAULIC EFFECT AND RESULT IN DAMAGE TO THE BLOCK. THE A-1 H-11 STUD CAN BE VERIFIED BY THE PRESENCE OF THE .250 HEX INTERNAL WRENCHING SOCKET ON THE 9/16-18 END OF THE STUD. DO NOT WASH YOUR BLOCKS WITH WATER OR WATER BASED CLEANERS WITH THE MAIN CAPS INSTALLED ON THE BLOCK. AFTER WASHDOWN, DRY AND SPRAY STUDS WITH WD-40, JB-80 OR SOME RUST PREVENTATIVE OIL. IF THESE STUDS RUST WHILE IN A TORQUED CONDITION (TENSION), CHANCES ARE THEY WILL FAIL.

TFX OIL RESTRICTORS-TFX-92-96-2000
 THERE IS A 5/16 - 18 TAPPED HOLE IN THE DECK OVER THE # 4 CAM BEARING, THIS HOLE HAS A ¼ - 20 TAPPED HOLE BELOW IT TO ALLOW THE INSTALLTION OF RESTRICTOR JETS BELOW THE INTERSECTION OF THE .090 ANGLE DRILLED TRANSFER HOLE FOR OILING THE ROCKER ASSEMBLY.WHEN INSTALLING THE 5/16 - 18 SET SCREW USE LOCTITE AND RUN IT JUST PAST FLUSH WITH THE DECK SURFACE, IF YOU THREAD IT IN TO FAR THE .090 TRANSFER HOLE WILL BE BLOCKED.IT IS RECOMMENDED THAT A .045 RESTRICTOR IS INSTALLED ON THE EVEN CYLINDER BANK AND NO RESTRICTOR ON THE ODD CYLINDER BANK.YOU STILL MUST PUT THE 5/16-18 SET SCREW ON THE ODD CYLINDER BANK TO CAP THE OIL GALLEY OFF.THIS IS DUE TO THE CHARACTERISTICS OF THE TFX OILING SYSTEM.


 

Keith Black Cast and (Special Cast)Aluminum
356 T-6 virgin aluminum (except the Stage 15 fuel block)
Bore sizes from 4.187 to 4.500
Head and main studs ½ to 9/16  or both
Since Keith Black, JP1, BAE and mopar  ( world etc), share the same bolt pattern for oil pan and gear drive, they can share the hard core race items with the stock style blocks ( B, RB, and hemi) * here is a donovan gear drive with a top gear cover ( makes adjusting cam timing much easier ) from a fuel/alcohol application , it has provision for a fuel pump drive ( a cover could be purchased from the gear drive manufacture that doesn't have this option ) , we simply modified this to incorporate a cam thrust bearing and an adjustment for it Manufactures for these include KB, BAE, Milidon, RCD , Donovan
* most of these do come in raised cam and stock cam location
Street  Bore sizes from 4.250 to 4.500 Deck heights from 10.725- 10.825
Stage 3 Std cam location, water block (decks range from 10.725 to 11.225)
Stage 5 Std cam location, solid block (deck can be machined .500 short)
Stage 6 Std cam location, water block (decks range from 10.725 to 11.225)
Stage 7 Raised cam location, solid block (decks range from 10.725 to 11.225)
Stage 8 Raised cam location, water block (decks range from 10.725 to 11.225)
Stage 10 Raised cam location, water block* (decks range from 10.725 to 10.825)
Stage 15 Raised cam location, water block* (decks range from 10.725 to 10.825) "unique alloy"
   
Billet main caps and 5/8 main studs standard on all Stage 10 - 15 blocks
Dual side bolts  ( 6 bolt Mains) after stage 3
Lifter bore centers from 1.800 to 2.000
Lifter bore .904 (std),  1" ,  1.062"
Note : some stage 5 and 6 blocks came without cam bearings - camshaft runs on cast aluminum surface

 

BAE Cast and Billet Aluminum

Head studs  9/16  or  9/16 stepped to 1/2
Billet main caps and 5/8 main studs
Lifter bore centers from 1.800(std)  to 2.200
Lifter bore .904 (std),  1" ,  1.090"
Std cam location, +.250 raised cam location
Std cam diameter , 2 1/8, 60mm, or 65mm
Lifter bore .904 (std),  1" ,  1.062"


Camshaft Upgrades in size and Location

 

CN Blocks Billet Aluminum
Premium CN Billet material
Deck heights: 10.725”, or 10.825”
Standard Chrysler main size
All five main caps are cross bolted
9/16” tool steel main studs, 1/2” side bolts
+.250 Cam height
Cam journal size: 2 1/8, 60mm, or 65mm
Lifter spacing: 1.900”(+.100 spread), or 2.00” (+.200 spread)
Lifter size: .904”, .936”, 1.0”, or 1.062”
GM starter mounts
( Can be modified to clear Chrysler starter )
•Dry block
•Chrysler and GM bell housing pattern
•Stock Hemi or CN Blocks wide pan pattern
 

Hemi 7

 

 

JP1 Cast Aluminum
Head studs   1/2
Lifter bore centers 1.800(std)
Lifter bore .904 (std)
Std cam location,
Std cam diameter
 
 
 
 

Consider a Keith Black aluminum street HEMI block.

Mopar Steel Aluminum
Casting #2468330    1964-1971 426 Hemi
Head  Bolts ( studs cannot be used ) 7/16
Lifter bore centers from 1.800(std)
Lifter bore .904 (std)
Std cam location, +.250 raised cam location
Std cam diameter , large diameter

Just a quick observation of the basic difference in stock style and real race products, the top studs are the minimum size of a race aftermarket block, bottom little stud is the
 maximum holding device for stock style 


 

  Donavan  Cast Aluminum 392 Hemi ?
Head studs   1/2
Lifter bore .904 (std)
Std cam location,
Std cam diameter
This is an aluminum replica of the 1st generation HEMI 354, 392 etc
with a main cap girdle built in, which is loosely based on the LA small block
( or the other way around )