Horsepower Required

Use the chart below to see how much net horsepower is required to run the elapsed time you want. To obtain the rear wheel horsepower simply multiply the number by 0.85. Example: If your car weight is 3,000 pounds and you want to run a 12 flat, the required net horsepower is 343 or the rear wheel horsepower required is 343 x 0.85 = 292.

ET & SPEED (seconds @ mph)	VEHICLE WEIGHT (pounds)
ET & SPEED (seconds @ mph)	2400	2600	2800	3000	3200	3400	3600	3800	4000	4200
16.0 @ 85	116	125	135	145	154	164	174	183	193	203
15.5 @ 88	127	138	149	159	170	180	191	202	212	223
15.0 @ 91	141	152	164	176	187	199	211	223	234	246
14.5 @ 94	156	169	182	194	207	220	233	246	259	272
14.0 @ 97	173	187	202	216	230	245	259	274	288	303
13.5 @ 101	193	209	225	241	257	273	289	305	321	337
13.0 @ 105	216	234	252	270	288	306	324	342	360	378
12.5 @ 109	243	263	283	304	324	344	364	385	405	425
12.0 @ 114	275	297	320	343	366	389	412	435	458	480
11.5 @ 119	312	338	364	390	416	442	468	494	520	546
11.0 @ 124	356	386	416	445	475	505	535	564	594	624
10.5 @ 130	410	444	478	512	546	580	615	649	683	717
10.0 @ 136	474	514	553	593	632	672	712	751	791	830
9.5 @ 143	553	599	645	692	738	784	830	876	922	968
9.0 @ 151	651	705	759	813	868	922	976	1,030	1,084	1,139
8.5 @ 160	772	837	901	965	1,030	1,094	1,159	1,223	1,287	1,352
8.0 @ 170	926	1,004	1,081	1,158	1,235	1,312	1,390	1,467	1,544	1,621

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