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Manifold Test - Ford Racing Boss 302 crate engine

Death of a Small-Block

By , Photography by , Grant Peterson

Edelbrock Performer RPM Dual-Quad Air-Gap Intake Manifold
This manifold surprised everyone. We're accustomed to dual-quad manifolds being a bit lazy in the midrange, but Edelbrock's dual-quad had the best average torque and made more peak horsepower than the Victor Jr. single-plane at 6,400 rpm. The twin 500-cfm carbs combined with the Air Gap design is a powerful combination for the 363 engine. We even used the factory jetting.

PN 7535 Price: $339.95
2,600–6,400 rpm 3,200–6,400 rpm*
Avg. HP: 367 396.5
Peak HP: 476 ---
Avg. TQ: 426 434.8
Peak TQ: 458 ---

RPM TQ HP
2,600 370 183
2,800 370 197
3,000 384 219
3,200 401 244
3,400 414 268
3,600 429 294
3,800 442 320
4,000 451 344
4,200 454 363
4,400 456 382
4,600 457 400
4,800 458 419
5,000 456 434
5,200 452 448
5,400 447 459
5,600 439 468
5,800 428 472
6,000 415 474
6,200 403 476
6,400 390 476
AVG. 426 367

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1 comments
fivepoint-0
fivepoint-0

I'd lik to see the same test using the wilson spacer on the rpm airgap intake. I use a funnel web(equal to the super vic) on a 302/5.0 motor in my 90 coupe with tfs 3 cam, ported world sr heads that has very good street manners and drive anywhere with 4.30 gears.

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