Adding power is addicting. Once you get a taste for it, you end up craving more, and it's hard to stop the madness until the wallet runs dry or you're too scared to drive the thing. Thankfully though, we aren't at either of those crossroads...yet. When we get the opportunity to add loads of "go" for not much green, and when it comes in a small, conveniently sized package that's completely bolt-on, well, now you're talking. There isn't anything better than adding nearly 80 hp in a matter of hours and having the know-how to do it yourself.

Briefly, our project '72 Nova began its life as a limp six-cylinder backed by a two-speed automatic. When we got our hands on it, we immediately swapped out the old powerplant in favor of a low-mileage iron-headed, hydraulic flat-tappet small-block with a Turbo 350 transmission. While the small-block swap was a great upgrade and made a world of difference in the power department-even barking second gear shifts-we wanted more.

With the small-block in, we figured what better way to show the simplicity of adding more power than with the tried and true method of going blown? In our case, it was the best method to making more power on the cheap with the least amount of downtime. Essentially, the build consisted of an elaborate manifold swap and only took us a full day's work from start to finish.

As always, we show you the inside on how it was done and what you might expect when adding boost to your project car. We spent the day at the Vaca Performance & Dyno facility in Downey, California, where the Vaca team helped to complete the build and threw the Nova on the rollers for before-and-after dyno numbers.

Quick Notes
What We Did

Added a Weiand 142-blower to our '72 Nova

Bottom Line
Our once six-bangin' Nova is now a fire-breathing blown small-block.

Price (Approx)
$3,709

The Proof

BASELINE
Advance 38 degrees
Fuel Pressure 7 lbs.
Carb Holley 650 HP
Spacer 1-inch HVH
4 hole taper

RPM POWER TORQUE
2,800 109 205
2,850 115 212
2,900 120 217
2,950 125 223
3,000 129 226
3,050 133 229
3,100 137 231
3,150 140 233
3,200 144 236
3,250 148 239
3,300 153 243
3,350 156 247
3,400 162 251
3,450 167 255
3,500 172 258
3,550 177 261
3,600 181 264
3,650 185 266
3,700 189 268
3,750 192 268
3,800 194 269
3,850 198 270
3,900 201 271
3,950 204 272
4,000 208 273
4,050 211 274
4,100 214 274
4,150 217 274
4,200 219 274
4,250 221 273
4,300 223 273
4,350 225 272
4,400 227 271
4,450 229 270
4,500 231 269
4,550 232 268
4,600 233 266
4,650 234 264
4,700 234 262
4,750 234 259
4,800 234 256
4,850 233 252
4,900 232 248
4,950 231 245
AVG 191 250
MAX 234 274
SUPERCHARGED
Advance 32 degrees
Fuel Pressure 9 lbs.
Carb Holley 700 CFM
Spacer 1-inch HVH
Boost 5 psi
RPM POWER TORQUE
2,800 115 216
2,850 124 228
2,900 131 238
2,950 138 246
3,000 146 255
3,050 153 264
3,100 169 272
3,150 169 281
3,200 176 290
3,250 182 295
3,300 187 298
3,350 192 301
3,400 197 304
3,450 202 308
3,500 208 311
3,550 213 315
3,600 218 318
3,650 223 321
3,700 228 324
3,750 233 327
3,800 239 330
3,850 244 332
3,900 248 334
3,950 253 337
4,000 258 339
4,050 263 341
4,100 268 343
4,150 273 345
4,200 277 347
4,250 282 348
4,300 286 349
4,350 289 349
4,400 292 349
4,450 295 348
4,500 297 347
4,550 300 346
4,600 303 345
4,650 305 345
4,700 308 344
4,750 310 343
4,800 311 340
4,850 312 337
4,900 312 335
4,950 306 324
AVG 237 316
MAX 312 349

Shopping Cart

MANUFACTURER DESCRIPTION PN PRICE
Holley 142 supercharger polished
long nose 6507-1 $2,400
Boost gauge 90520 95
700-cfm 4150 carburetor 0-80572-S 500
14-inch high-flow air cleaner 120-146 64
Fuel line assembly 93178 154
Mechanical fuel pump 12-327-11 78
2.66-inch blower pulley 90534 93
Vaca Performance & Dyno Half-day chassis dyno   325
TOTAL $3,709

Sources
Holley
270.782.2900
holley.com
Vaca Performance & Dyno
562.622.2508
vacaperformance.com
SOURCE
Holley Vaca Performance & Dyno
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