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Chevy 454 engine Blue Collar Build - Part 4: Tunnel Ram

How to Make 800 HP with Nitrous and a Tunnel-Ram Blue Collar 454

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Cam Specs
Cam : SX290S Adv. Duration Duration at 0.050 Lift in Inches (Net Lift Minus Lash) Lobe-Separation Angle
Intake 290 252 0.598 (0.582) 110
Exhaust 298 260 0.598 (0.582)

Power Numbers
Test 1 was a re-baseline of the Feb. '13 test, with a single four-barrel and a Wilson 1-inch tall tapered spacer.
Test 2 is the same as the first run but with the Weiand tunnel-ram and two 750-cfm Pro Systems carburetors.
Test 3 is with the addition of the 200hp nitrous shot.

Test 1 Test 2 Test 3
RPM TQ1 HP1 TQ2 HP2 TQ3 HP3
3,100 442 261 467 275 --- ---
3,300 457 287 486 305 --- ---
3,500 476 317 516 344 --- ---
3,700 501 353 541 381 --- ---
3,900 526 391 554 411 --- ---
4,100 541 422 561 438 --- ---
4,300 550 450 563 461 --- ---
4,500 553 474 560 480 --- ---
4,700 550 493 555 496 --- ---
4,900 546 509 552 515 --- ---
5,100 537 522 551 535 --- ---
5,300 528 532 544 549 --- ---
5,500 521 545 533 558 576 603
5,700 513 557 522 566 673 730
5,900 508 570 516 579 705 792
6,100 500 581 508 591 691 802
6,300 490 587 494 593 668 801
6,500 475 587 475 587 635 786
Peak 553 588 563 593 705 804
Average 511.5 464.0 527.5 476.8 --- ---

Parts List
Description PN Source Price
Manley Rat intake valve 11800-8 Summit Racing $189.95
Manley Rat exhaust valve 11881-8 Summit Racing 119.95
Summit Stage 4 intake 226052 Summit Racing 199.95
NOS dual Cheater kit 02010-NBNOS Summit Racing 605.95
Weiand 2x4 linkage kit 4022 Summit Racing 139.95
Weiand tunnel-ram 1981 Summit Racing 355.95
Pro Systems 750 E85 carb Call Pro Systems 692.00 ea.
Pro Systems 950 E85 carb Call Pro Systems 720.00
Custom stainless fuel lines Custom DMP Call (440.00 est.)
Wilson 1-inch spacer 004110 Summit Racing 127.95
Comp XS 290 solid cam 11-679-5 Summit Racing 191.69
Comp spring spacers 4779-8 Summit Racing 24.95
Comp 1.7:1 rocker arms 1820-16 Summit Racing 399.95
Comp intake pushrod 7743-1 (x 8) Summit Racing 79.60
Comp exhaust pushrod 7756-1 (x 8) Summit Racing 87.60
Comp oil, 10w30 1594 Summit Racing 39.75
Autolite race plugs AR-3910X Carshopinc.com 6.95 (8)
Fel-Pro head gasket 1037 Summit Racing 46.95
Fel-Pro intake gasket 1281-3 Summit Racing 21.95
MSD Pro Billet 8361 Summit Racing 212.95
MSD plug wire 35379 Summit Racing 85.95
ARP head-bolt set 135-3601 Summit Racing 77.15

SOURCES
Jim Grubbs Motorsports
28130 Avenue Crocker
# 331
Valencia
CA  91355
661-257-0101
Pro Systems
Dept. MMFF
6674-A Grand Haven Rd.
Spring Lake
MI  49456
Manley Performance
www.manleyperformance.com
Wilson Manifolds Inc.
Ft. Lauderdale
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