bullybreed66
03-30-2012, 09:43 PM
Heres my dyno and build fact sheet on my ls2 powered sierra! just got it installed, tuned and ready to roll..pushed 620 WHP average and over 700 WHP with a small shot!! super happy with my results, and had a good time building it!
here's the numbers and info:
Block ERL Tall-Deck LS2
Bore 4.202
Stroke 4.500
Displacement 500 ci
Rod length 6.800
Deck height 0
Block height 10.200
Head gasket thickness 0.040
Main bearing clearance 0.0023-0.0025
Rod bearing clearance 0.0022-0.0025
Piston-to-wall clearance 0.005
Piston dome volume -28 cc
Piston compression height 1.150
Top ring gap 0.025
Second ring gap 0.025
Compression ratio 10.8:1
Camshaft (Comp Cams) 248/254-at-0.050; 0.647/0.647; 114
Installed centerline 114 degrees
Rocker ratio 1.7:1
Valves 2.200/1.615 intake/exhaust
Valvespring diameter 1.539
Valvespring seat pressure 150 lb
Valvespring open pressure 440 lb
Intake manifold Factory GM LS7
Fuel 93 octane unleaded
Measurements in inches unless otherwise noted
ON MOTOR
RPM LB-FT HP
4,300 570 466
4,400 582 488
4,500 600 514
4,600 615 538
4,700 622 557
4,800 626 572
4,900 628 586
5,000 629 599
5,100 630 612
5,200 629 623
5,300 627 633
5,400 625 643
5,500 622 651
5,600 618 659
5,700 614 667
5,800 611 675
5,900 609 684
6,000 608 694
6,100 605 703
6,200 601 709
6,300 595 713
6,400 588 716
6,500 579 717
Avg. Torque 608
Avg. Power 620
It wouldnt let me upload a photo :(
here's the numbers and info:
Block ERL Tall-Deck LS2
Bore 4.202
Stroke 4.500
Displacement 500 ci
Rod length 6.800
Deck height 0
Block height 10.200
Head gasket thickness 0.040
Main bearing clearance 0.0023-0.0025
Rod bearing clearance 0.0022-0.0025
Piston-to-wall clearance 0.005
Piston dome volume -28 cc
Piston compression height 1.150
Top ring gap 0.025
Second ring gap 0.025
Compression ratio 10.8:1
Camshaft (Comp Cams) 248/254-at-0.050; 0.647/0.647; 114
Installed centerline 114 degrees
Rocker ratio 1.7:1
Valves 2.200/1.615 intake/exhaust
Valvespring diameter 1.539
Valvespring seat pressure 150 lb
Valvespring open pressure 440 lb
Intake manifold Factory GM LS7
Fuel 93 octane unleaded
Measurements in inches unless otherwise noted
ON MOTOR
RPM LB-FT HP
4,300 570 466
4,400 582 488
4,500 600 514
4,600 615 538
4,700 622 557
4,800 626 572
4,900 628 586
5,000 629 599
5,100 630 612
5,200 629 623
5,300 627 633
5,400 625 643
5,500 622 651
5,600 618 659
5,700 614 667
5,800 611 675
5,900 609 684
6,000 608 694
6,100 605 703
6,200 601 709
6,300 595 713
6,400 588 716
6,500 579 717
Avg. Torque 608
Avg. Power 620
It wouldnt let me upload a photo :(