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Manifold Test - Ford Racing Boss 302 crate engine

Death of a Small-Block

By , Photography by , Grant Peterson

Edelbrock Performer
The Edelbrock Performer is the lowest-cost manifold in the group and it also made the least peak and average power of the group. This manifold advertises low-end torque and crisp throttle response and down low at 2,600 rpm, it made 5 lb-ft and 2 hp more than the RPM Air Gap. It is a low-rise dual plane with a 4.125-inch carb pad height, so this would be the choice for a car with tight hood clearance. Otherwise we'd go for the RPM Air Gap and spend the extra $100.

PN 2121 Price: $165.95
2,600–6,400 rpm 3,200–6,400 rpm*
Avg. HP: 348 374.3
Peak HP: 435 ---
Avg. TQ: 408 413.7
Peak TQ: 439 ---


*The second column represents average torque and horsepower at 3,200–6,400 rpm, where the engine will spend 80 percent of its time at the dragstrip. Theory says, the car that makes the most average torque in this range will be the quickest.

RPM TQ HP
2,600 364 180
2,800 370 197
3,000 393 224
3,200 412 251
3,400 422 273
3,600 429 294
3,800 437 316
4,000 439 334
4,200 438 350
4,400 437 366
4,600 435 381
4,800 431 394
5,000 427 406
5,200 419 415
5,400 412 423
5,600 403 430
5,800 393 434
6,000 381 435
6,200 368 435
6,400 351 427
AVG. 408 348

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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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