Ron's Pontiac Page: Erson Cams Specs

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Erson Cams

It appears that Erson no longer sells Pontiac cams (although you may still be able to get them as a custom request). The following info is provided for NOS-type purchases, or swap meet finds.
Cam	Lifter Type	Pattern	Adv Intake Duration	Adv Exhaust Duration	Int Duration @ .050"	Ex Duration @ .050"	Int Lift 1.5 Rockers	Ex Lift 1.5 Rockers	Int Lift 1.65 Rockers	Ex Lift 1.65 Rockers	Lobe Sep Angle	RPM Range	DD2000 File
E310011 (MP1)	HFT	D	280	292	208	214	0.420	0.449	0.462	0.494	114	1000-4200
E310031 (MP3)	HFT	D	306	316	235	240	0.472	0.472	0.519	0.519	114	3000-6000
E310121 (TQ20H)	HFT	S	292	292	214	214	0.449	0.449	0.494	0.494	110	1200-4500
E310123 (Hi Flo AH)	HFT	S	284	284	220	220	0.472	0.472	0.519	0.519	112	1700-4800
E310222 (TQ40H)	HFT	D	284	296	220	228	0.472	0.472	0.519	0.519	110	2200-5200
E310223 (TQ50H)	HFT	D	296	306	228	235	0.472	0.472	0.519	0.519	110	2700-5700
E310321 (Hi Flo III H)	HFT	S	316	316	240	240	0.472	0.472	0.519	0.519	108	3500-6500
E310421 (Hi Flo 1H)	HFT	S	296	296	228	228	0.472	0.472	0.519	0.519	108	2500-5500
E310444 (Hi Flo IV H)	HFT	D	312	320	248	256	0.507	0.517	0.558	0.569	110	3800-6800
E310501 (F-282-6)	SFT	D	282	290	246	254	0.510	0.510	0.561	0.561	110	3500-6500
E310502 (F-286-2)	SFT	D	286	294	250	258	0.510	0.510	0.561	0.561	108	4000-7000
E310503 (F-306-1A)	SFT	D	306	314	268	276	0.562	0.562	0.618	0.618	108	4500-7500
E310991 (R-278-2)	SR	D	278	286	238	246	0.555	0.555	0.611	0.611	112	2800-5800
E310992 (R-282-1C)	SR	D	282	292	253	263	0.600	0.600	0.660	0.660	110	3200-6200
E310993 (R-302-7)	SR	D	302	310	276	284	0.675	0.645	0.743	0.710	106	4000-6500
E310994 (R-314-9A)	SR	D	314	318	284	288	0.727	0.712	0.800	0.783	108	5200-7200

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