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Manifold Test - Ford Racing Boss 302 crate engine

Death of a Small-Block

By , Photography by , Grant Peterson

Edelbrock Victor Jr.
As much as we liked the dual-quad manifold, it requires two carbs (at twice the price), linkage, and the manifold itself is around $80 more than the Victor Jr. single-plane. If you have the money and the hood clearance, single-plane manifolds make the power numbers. The Victor Jr. is 0.250-inch taller than the dual-plane manifold and has larger, shorter runners for high-rpm power. It beat the Performer easily, but because it is designed to make power from 3,500–8,000 rpm, the engine was still pulling at 6,400 rpm, where we ran out of camshaft and cylinder head. This intake would be happier with a larger carburetor, a port job, and about 20 degrees more cam duration.

PN 2921 Price: $254.95
2,600–6,400 rpm 3,200–6,400 rpm*
Avg. HP: 357 385.1
Peak HP: 469 ---
Avg. TQ: 414 421.5
Peak TQ: 443 ---

RPM TQ HP
2,600 367 182
2,800 371 198
3,000 380 217
3,200 387 236
3,400 401 260
3,600 412 282
3,800 422 305
4,000 429 327
4,200 434 347
4,400 438 367
4,600 440 386
4,800 441 403
5,000 443 421
5,200 442 437
5,400 437 449
5,600 429 458
5,800 419 463
6,000 409 467
6,200 398 469
6,400 385 469
AVG. 414 357

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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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