Chevy Small Block Part 9 - Camshaft

Test 17: We tested 1.5:1-ratio exhaust rockers and 1.6:1-ratio intake rockers (best power of all rocker combinations tested so far).
Max 442 tq, 414 hp
Avg 419 tq, 335 hp

Test 18: A COMP Cams XE268H camshaft (268/280 adv, 224/230 @ .050, .477/.480 lift, 110 LS) was installed straight up. We changed all rocker arms back to a 1.6:1 ratio.
Max 439 tq, 427 hp
Avg 418 tq, 335 hp

	Wilson		1.6I/1.5E		COMP
	4-1 spacer		rockers		XE268H
	Test 16		Test 17		Test 18
RPM	TQ	HP	TQ	HP	TQ	HP
2600	377	187	384	190	371	184
2800	383	204	392	209	379	202
3000	413	236	413	236	400	229
3200	429	261	428	261	425	259
3400	431	279	432	280	431	279
3600	435	298	437	299	436	299
3800	435	314	439	317	435	315
4000	435	332	439	335	430	328
4200	436	348	437	350	431	344
4400	436	366	438	367	439	367
4600	440	385	441	387	437	383
4800	434	396	435	398	438	400
5000	424	404	425	405	429	408
5200	412	407	413	409	417	413
5400	401	413	401	412	407	419
5600	388	414	388	414	398	424
5800	366	404	366	404	387	427
Max	440	414	442	414	439	427
Avg	418	334	419	335	418	335

Send your test suggestions to:Super Chevy Magazine
Attn: Danger Mouse
720 Hundley Way
Placentia, CA 92870
Or Email: mike.petralia@primedia.com

SOURCES
76 RACING FUELS & LUBRICANTS (800) 345-0076 www.76.com	Mr. Gasket Company 10601 Memphis Ave., #12 Cleveland OH 44144 216-688-8300 www.mr-gasket.com
Bill Mitchell's Hardcore Racing Products 51 Tradezone Ct Ronkonkoma NY 11779 www.theengineshop.com	Powerhouse Engine Components 931 19th St Bakersfield CA 93301
The Carb Shop 1461 E. Philadelphia Ontario CA 91761 909-947-3575 www.customcarbs.com	Powerhouse Products 3402 Democrat Rd. Memphis TN 38118 800-872-7223 901-795-7600 www.powerhouseproducts.com
COMP Cams	Scoggin-Dickey (SDPC) 5901 Spur 327 Lubbock TX 79424
Demon Carburetion Dahlonega Ge 7-06/-864-8544 barrygrant.com	Specialty Component Engineering 1122 West Ave. L-12, Unit 111 Lancaster CA 93534
Edelbrock Dept. 5.0 2700 California St. Torrance CA 90503 310-781-2222 www.edelbrock.com	Specialty Auto Parts 28314 Hayes Ave P.O. Box 306 Roseville MI 48066
Fluidampr Springville NY 7-16/-592-1000 fluidampr.com	Summit Racing Equipment P.O. Box 909 Akron OH 44309
Lunati Cams Olive Branch MS 6-62/-892-1500 lunatipower.com	Westech Performance Group 11098 Venture Dr., Unit C Mira Loma CA 91752 9-09/-685-4767 www.westechperformance.com
Mechanix Wear 24950 Anza Dr. Valencia CA 91355 6-61/-257-0474 www.mechanix.com	Wilson Manifolds 4700 NE 11th Ave. Ft. Lauderdale FL 33334 954-771-6216 www.wilsonmanifolds.com
Milodon 2250 Agate Ct. Simi Valley CA 93065 805-577-5950 www.milodon.net