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  John I got the Chevelle running. It is very strong, 600 horsepower makes it feel like a race car. It takes some skill to drive. I have scared everyone that I've taken for a ride in it.
Thanks. Benny S. Texas.
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LINKS TO MORE PAGES
Comparing Big Block Heads
Holley SysteMax
740BHP AFR BBC Magazine Feature
700BHP ARF BBC Magazine Article
565CID 1000BHP
632CID Magazine Build
705 Magazine Build 
LINK TO GM BBC CRATE ENGINES
12370850 - ZL1 Aluminum Big Block $5600
The Chevrolet aluminum big-block is back and better than ever. This block was first introduced in the 1969 Corvette and Camaro. It was one of the rarest production engines ever built. Now the improved version is available. This block is based on the original tooling. The new casting is made from 356-T6M aluminum alloy and has a 4.250" cast iron liner that can be bored to 4.300". The bottom end has also been improved with new 4-bolt splayed steel main caps with dowel pins to locate and hold the caps in place. This block includes screw-in freeze plugs with o-ring seals and a two-piece rear main oil seal. the new block has a provision for both dry sump or regular oil pump systems and mechanical fuel pump. All GM Performance Parts cylinder heads will fit this block and it weighs only 110 lbs. The maximum stroke is 4.375".
| Engine Size |
Stock Bore |
+.060"-over |
Stock Stroke |
| 366 |
3.935" |
3.995" |
3.760" |
| 396 |
4.094" |
4.154" |
3.760" |
| 402 |
4.125" |
4.185" |
3.760" |
| 427 |
4.250" |
4.310" |
3.760" |
| 454 |
4.250" |
4.310" |
4.000" |
| Mark 5 — 502 — Mark 6 |
4.468" |
4.530" |
4.000" |
| 454 Engines |
3.760" |
4.000" |
4.250" |
4.500" |
4.750" |
4.875" |
| Stock bore = 4.250" |
427" |
454" |
482" |
511" |
539" |
553" |
| Bored .030" = 4.280" |
433" |
460" |
489" |
518" |
547" |
561" |
| Bored .060" = 4.310" |
439" |
467" |
496" |
525" |
554" |
569" |
| Bored .090" = 4.340" |
445" |
473" |
503" |
533" |
562" |
577" |
| Bored .100" = 4.350" |
447" |
476" |
505" |
535" |
565" |
580" |
| Bored .125" = 4.375" |
452" |
481" |
511" |
541" |
571" |
586" |
| 502 Engines |
3.760" |
4.000" |
4.250" |
4.500" |
4.750" |
4.875" |
| Stock bore = 4.468" |
472" |
502" |
533" |
564" |
596" |
611" |
| Bored .032" = 4.500" |
478" |
509" |
541" |
573" |
604" |
620" |
| Bored .062" = 4.530" |
485" |
516" |
548" |
580" |
612" |
629" |
| Bored .092" = 4.560" |
491" |
523" |
555" |
588" |
621" |
637" |
| Aftermarket Blocks |
4.000" |
4.125" |
4.250" |
4.375" |
4.500" |
4.625" |
4.750" |
4.875" |
5.000" |
| 4.500" bore |
509" |
525" |
541" |
557" |
572" |
588" |
604" |
620" |
636" |
| 4.530" bore |
515" |
532" |
548" |
564" |
580" |
596" |
612" |
628" |
645" |
| 4.560" bore |
523" |
539" |
555" |
572" |
588" |
604" |
621" |
637" |
653" |
| 4.590" bore |
530" |
546" |
563" |
579" |
596" |
612" |
629" |
645" |
662" |
| 4.600" bore |
532" |
548" |
565" |
582" |
598" |
615" |
632" |
648" |
665" |
| 4.625" bore |
537" |
554" |
571" |
588" |
605" |
622" |
638" |
655" |
672" |
6410-1029
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Hey John,
Got the engine fired Up and running pretty strong, Wow I like the low end power!!!!
It definately sounds good and runs strong in the lower RPM range, more than I thought it would.
I also have sent you a couple of customers to inquire on building engines.
James T. Kalamazoo Michigan
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DART BLOCK OPTIONS
Coming Soon New Merlin X Block from World. Aluminum Block 598cid
Dart BBC Heads
BBC Background Story Click Here
BIG BLOCK CASTING NUMBERS
EXAMPLE
496 BIG BLOCK CHEVROLET TURNKEY ENGINE
ASSEMBLED SHORT BLOCK
$350 GM 4 BOLT BLOCK 4.310" (4 bolt add $300)
$550 CNC MACHINED & CLEARANCED 4.250"
$580 4130 FORGED 4.250 STROKER CRANK CK0454/4.250
$400 4340 FORGED 6.385 H-BEAM RODS W/7/16 CAP SCREWS CRS6385
$650 JE/SRP FORGED 10:1 DOME PISTONS SRP-142991
$145 JE PLASMA MOLLY FILE TO FIT RINGS JEP-J100F8-4310-5 1/16 1/16 3/16
$45 STREET MAIN BEARINGS MS-829P Clearance .0025"
$70 RACE ROD BEARINGS CB-743H Clearance .002"
$20 CAM BEARINGS CH-12
$10 FREEZE PLUGS PE-102-BR
$80 HARMONIC BALANCER PRO-80004
$5 HARMONIC BALANCER BOLT MIS-1
$70 SFI FLEXPLATE PIO-871001
$10 FLEXPLATE BOLTS ARP-100-2901
$200 INTERNALLY BALANCE ROTATING ASSEMBLY with heavy metal
$300 ASSEMBLE SHORT BLOCK
$3485 TOTAL
ASSEMBLED LONG BLOCK
$1500 PRO TOPLINE HEADS TOP-22419000320 320 INTAKE RUNNERS, 119 CHAMBER In 360cfm Ex 248cfm @ .600"
$100 FEL-PRO GASKETS
$80 HEAD BOLTS ARP-135-3607
$50 CLOYES DBL ROLLER TIMING SET CLO-9-1100
$160 COMP CAMS XTREME ENERGY CAM .XS274S COM-11-677-4 In 236/568" Ex 242/.578 Range 2000-6400RPM
$160 SOLID LIFTERS with EDM HOLE SEA-EDM-992
$280 STAINLESS STEEL ROLLER ROCKER ARMS YBB454770
$180 MANLEY PUSH RODS 3.8 .080 WALL MAN-25860-8 & MAN-25955-8
$150 ASSEMBLE LONG BLOCK & DEGREE CAMSHAFT
$2660 TOTAL
ASSEMBLED COMPLETE
$90 6qt. KICKED-OUT SUMP OIL PAN WITH 1 TRAP SUN-9728X
$8 OIL PAN BOLT KIT PIO-859018
$40 HIGH VOLUME OIL PUMP MEL-M-77HV
$15 PICK-UP SUN-9730
$10 HARD STEEL SHAFT MEL-IS-77
$5 STUD, NUT & WASHER ARP-230-7003
$6 DIPSTICK KIT SUN-4958
$225 EDELBROCK AIR GAP ALUM INTAKE MANIFOLD EDL-7562
$100 PORT MATCH HEADS & MANIFOLD
$35 MANIFOLD BOLTS ARP-435-2001
$30 HEAVY GAUGE, STAMPED STEEL TIMING COVER PRO-141-216
$3 TIMING COVER POINTER WYS-9067
$40 CHROME TALL/BAFFLED VALVE COVERS SUN-9215
$5 PVC
$8 FITTINGS
$100 ASSEMBLE
$720 TOTAL
TURNKEY READY
$850 TPC BLUEPRINTED TUNED DOUBLE PUMPER HP-750 Dryflow 917.2cfm Wetflow 832.8cfm Other carb choices
$85 FUEL PUMP CAR-M6901
$55 CARB FUEL LINE PP-10420
$8 FUEL FILTER
$22 FUEL PUMP PUSH ROD COM-4607
$120 HEI DISTRIBUTOR PRO-6001K
$4 DISTRIBUTOR CLAMP WYS-4116
$12 HIGH FLOW THERMOSTAT 180 MRG-4364
$15 THERMOSTAT HOUSING
$105 HIGH FLOW ALUMINUM WATER PUMP ALL-144BAL
$30 BOLTS
$20 OIL FILTER ADAPTOR MEL-MFA-454
$10 2 FILTERS QS5
$85 SPARK PLUG WIRES MSD-31199
$50 SPARK PLUG WIRE SEPARATORS
$24 SPARK PLUGS AUOTLITE-3934
$100 ASSEMBLE
$1595 TOTAL
TOTAL $8460
FREIGHT $500
NOTES:
Notice the camshaft is advertised to make peek power at about 6400rpm, but in fact made peek BHP at 6100 this is a result of the longer .250" stroke.
A solid lifter cam was chosen to create more torque and horsepower than a similar hydraulic cam would produce.
A flat tappet hydraulic cam would require special race lifters to maintain power beyond 6000rpm.
A Hydraulic Roller cam will make significantly more power and torque than the solid cam, but require a Rev Kit to maintain power beyond 6000rpm.
A Hydraulic Roller cam will cost $450 more and the Rev kit $175
The 274 is recommend to use with a 2500rpm stall speed torque converter, however you can get by with a 2000.
Longer duration cams will increase the peek BHP and lower the torque values below 3500rpm. They will also reduce vacuum and require higher stall speed converters.
A single plane manifold will also increase BHP and lower TQ at low RPM
Using a Mighty Demon Carb will lower the price $330
To further increase power and torque I recommend AFR 305 CNC chamber heads with 11.0:1 compression, add $750. These are excellent heads. Larger port heads will increase peek horsepower but lower torque
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Stroker Engine has created a BOMB 620cid 900HP.jpg)
