LS1 Mods - Difference - Car Craft Magazine

LPE also offers a steel rocker arm stand that locates the rocker shaft assembly and replaces the somewhat fragile stock aluminum piece.

LPE also offers a steel rocker arm stand that locates the rocker shaft assembly and replac

Test 3:
We added a relatively mild LPE hydraulic roller camshaft and Comp valvesprings. Note how the cam raised the torque peak, losing a little torque below 2,800 rpm, but gaining excellent power especially above 4,000 rpm. The combination of the headers and cam was worth 21 lb-ft of torque and a whopping 65 hp peak-to-peak.

Test 4:
All we changed was to the larger LPE hydraulic roller cam, but compared to the stock baseline test, we now have picked up 100 hp!

The Difference column shows the overall loss or gain between Test 1 and Test 4

	TEST 1		TEST 2		TEST 3		TEST 4		DIFF
RPM	TQ	HP	TQ	HP	TQ	HP	TQ	HP	TQ	HP
2,000	318	120	318	121	308	118	281	108	-37	-12
2,200	318	134	322	136	300	126	261	110	-57	-24
2,400	322	148	334	155	309	142	272	125	-50	-23
2,600	328	161	341	169	327	162	297	149	-31	-12
2,800	331	178	339	181	333	179	308	164	-23	-14
3,000	330	191	342	198	336	193	325	188	- 5	- 3
3,200	333	203	343	209	342	210	337	205	+ 4	+2
3,400	340	220	341	221	338	221	337	219	- 3	- 1
3,600	336	232	347	239	340	233	339	233	+3	+1
3,800	340	246	351	255	347	252	337	244	- 3	- 2
4,000	345	263	355	272	352	268	335	255	-10	- 8
4,200	338	272	354	285	358	286	342	274	+ 4	+2
4,400	338	284	352	295	360	303	353	297	+15	+13
4,600	335	294	349	305	365	321	365	319	+30	+25