Chevy Small Block Part 9 - Edelbrock

A Recap Of Danger Mouse Tests

By Mike Petralia

Test 10: We installed an Edelbrock Performer RPM "Air Gap" intake manifold, which was the best single-gain swap yet and the first test to average over 400 lb-ft of torque.
Max 438 tq, 380 hp
Avg 416 tq, 315 hp

Test 11: We installed a Wilson 1 1/4-inch-tall open carb spacer.
Max 437 tq, 381 hp
Avg 414 tq, 314 hp

Test 12: A larger COMP Cams XE262H cam (262/270 adv duration, 218/224 duration @ .050, .462/.469 valve lift, 110 lobe separation) was installed straight up.
Max 438 tq, 386 hp
Avg 416 tq, 316 hp

	Speed		Air Gap		Wilson		COMP
	Demon 750		intake		spacer		XE262H
	Test 9		Test 10		Test 11		Test 12
RPM	TQ	HP	TQ	HP	TQ	HP	TQ	HP
2600	393	194	411	203	403	200	396	196
2800	395	211	413	220	408	218	404	215
3000	403	230	420	240	420	240	416	237
3200	413	252	430	262	428	261	429	261
3400	416	269	436	282	427	276	429	278
3600	415	284	438	300	432	296	435	298
3800	416	301	437	316	436	315	437	316
4000	414	315	437	333	437	332	438	334
4200	408	327	435	348	430	344	436	348
4400	402	337	429	359	426	357	432	362
4600	394	345	421	369	420	368	424	371
4800	386	352	411	376	412	376	417	381
5000	373	356	398	379	399	379	405	386
5200	359	355	380	376	384	380	389	385
5400	346	356	365	375	367	377	375	386
5600	331	353	347	370	351	374	360	384
Max	418	356	438	380	437	381	438	386
Avg	398	294	416	315	414	314	416	316

Unlucky Test 13: S/R Torquer cylinder heads (January 2003).By Test 12 we had really started to crank out some power, especially considering that DM still wore its stock iron heads and ran a mild camshaft. However, Test 13 really did prove to be an unlucky number, and we were taught a lesson in proper parts matching. The S/R Torquer cylinder heads (which we got from Bill Mitchell's Hardcore Racing Products for only $415 each) set us back a few ponies, probably the result of combustion chambers and valves that were too large compared to the stock heads.