We experimented with timing (eventually settling on 35 degrees) and minor jetting to the rebuilt Holley before letting the hammer fly. With a safe air/fuel mixture in the high 12s, the 350 eventually pumped out 407 hp at 5,900 rpm and 410 lb-ft of torque at 4,500 rpm. We had officially reached our goal of producing 400 hp. The final bill for our 400hp build up checked in at $1,155, including the cost of the motor. We were excited about the 400hp peak number, but what really made us happy was the fact that this low-buck motor produced over 400 lb-ft of torque from 3,700-5,200 rpm. Even down at 3,000 rpm, Chump Change churned out 372 lb-ft of torque. Yes, we went $155 over budget, but the result is still affordable for most any enthusiast. Since we gave up our accessories during the engine purchase, we ran the motor with this Meziere electric water pump we've used on hundreds of dyno tests.Since we gave up our accessories during the engine purchase, we ran the motor with this Me Naturally, we changed the oil before starting the dyno test. We had no way of knowing what was in the crankcase, so we opted to run some 5W-30 synthetic oil from Lucas.Naturally, we changed the oil before starting the dyno test. We had no way of knowing what After removing the iron L98 heads, we ran them on the flow bench to illustrate the flow differences between the stock and Pro Comp heads. Tested at 28 inches, the L98 heads flow 191 cfm on the intake and 146 cfm on the exhaust (both at 0.600 lift).After removing the iron L98 heads, we ran them on the flow bench to illustrate the flow di By contrast, the Pro Comp 190 heads flowed 244 cfm on the intake and 189 cfm on the exhaust (both at 0.600 lift).By contrast, the Pro Comp 190 heads flowed 244 cfm on the intake and 189 cfm on the exhaus We also purchased a set of Pro Comp cast aluminum valve covers for the small-block since the original L98 heads featured the stamped steel, center bolt covers.We also purchased a set of Pro Comp cast aluminum valve covers for the small-block since t On the dyno, the 350 pumped out peak numbers of 407 hp at 5,800 rpm and 410 lb-ft at 4,500 rpm, all for the paltry sum of just $1,155. (I know, we missed the $1,000 mark, but it's still impressive.)On the dyno, the 350 pumped out peak numbers of 407 hp at 5,800 rpm and 410 lb-ft at 4,500 L98 IRON VS PRO COMP 190 AS CAST INTAKE AIRFLOW DATA CFM @28 INCHES Lift L98 Pro Comp 190 .100 52 58 .200 108 113 .300 153 160 .400 178 199 .500 191 227 .600 190 244 L98 IRON VS PRO COMP 190 AS CAST EXHAUST AIRFLOW DATA CFM @28 INCHES Lift L98 Pro Comp 190 .100 39 52 .200 80 98 .300 116 132 .400 136 161 .500 146 180 .600 147 192 SponsorsComp Cams901/795-2400www.compcams.com Pro Comp Electronics909/605-1123www.procompelectronics.com Chump ChangeChallenge 350 PricingPro Comp Heads$580.00Professional Products Intake$129.00Complete 350 Motor, Pick-a-Part(Wrecking Yard)$200.00Core charge$0.00Gaskets set- Motorville(MRG-7100)$25.00E-Bay Comp Cam$159.00Pro Comp CastAluminum Valve Covers$33.00Summit Racing Pushrods$29.00Chump Change Total Build Cost$1155.00 POWER NUMBERS: CHUMP CHANGE CHALLENGE 350 CHEVY RPM HP TQ 3000 213 372 3200 228 374 3400 249 385 3600 271 396 3800 393 405 4000 312 409 4200 328 410 4400 344 410 4600 359 410 4800 373 408 5000 387 406 5200 398 402 5400 405 393 5600 407 381 5800 407 469 6000 405 455 6200 403 341 « | 1 | 2 | 3 | 4 | View Full Article By Richard Holdener Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
jmatthews92 7/21/2012 at 3:23 AM Any chance you guys have the setup specs for the Holley 750? I have the exact same combination and would like to try to save some time.....Thanks!
Alberto_1970 3/31/2011 at 6:52 PM Greetings all, I find this very interesting article for those who are fans of the machines Chevys. I want to build this engine for my Chevy Nova 75, I could help with the numbers of the components of this engine? Thanks. Albert
