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1968 Chevrolet Chevelle - The Howitzer - Project Car - Popular Hot Rodding

Machine Work (Outlaw Racing):
Clean block:     $80
Block bore & hone:   $245
Hone rods: $40
Cam bearings: $60
Deck resurface:     $120
Balancing:     $180
Machine shop labor total:     $725
Parts and Labor Total:     $7,523.37

SUPERFLOW DYNO RESULTS
HOWITZER 496 BIG-BLOCK CHEVY 2.250-INCH DYNO HEADERS
RPM TQ HP RPM TQ HP
3,100 597 353 4,700 618 553
3,200 600 365 4,800 616 563
3,300 607 382 4,900 613 572
3,400 616 399 5,000 611 582
3,500 624 416 5,100 609 591
3,600 630 432 5,200 605 599
3,700 633 446 5,300 600 606
3,800 635 460 5,400 594 611
3,900 635 472 5,500 587 615
4,000 633 482 5,600 581 619
4,100 630 492 5,700 574 623
4,200 627 501 5,800 566 625
4,300 624 511 5,900 557 626
4,400 623 522 6,000 547 625
4,500 622 533 6,100 537 624
4,600 620 543      

37 degrees ignition timing82/90 jets

1968 Chevrolet Chevelle Andy Mitchell
Andy Mitchell took great care... 
   
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1968 Chevrolet Chevelle Andy Mitchell
Andy Mitchell took great care to ensure that the COMP Thumpr camshaft was degreed to specifications at 102 degrees intake centerline. The camshaft thrust was carefully measured and set with a thrust button prior and some slight dimpling of the timing cover.
1968 Chevrolet Chevelle Cylinder Heads Install
With the cylinder heads finding... 
   
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1968 Chevrolet Chevelle Cylinder Heads Install
With the cylinder heads finding their home up top, the build really progresses. Here, Tim Martindale installs the heads with ARP fasteners, and torques with the recommended ARP thread lube.
1968 Chevrolet Chevelle Two Plane Intake
If a big engine likes to make... 
   
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1968 Chevrolet Chevelle Two Plane Intake
If a big engine likes to make torque, a two-plane intake helps it make even more. Edelbrock's Performer RPM Air Gap works really well on a street big-block, with great torque and airflow to work into the 6,000 rpm range.

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