I am throwing a new cam into my 94 5.0 i was going to order an e-303 and someone told me to also order a set of vave springs with them..... i am unshure what the difference is between the b303 and the e303. anyone know??

 

The E303 cam has .498 lift on both intake and exhaust and has 220 degrees duration @.050 which is a good cam for a stock 5.0 with an automatic traansmission. The B303 cam has .480 lift on both intake and exhaust with 224 degrees duration @.050 meaning the power band of this cam is a little higher up in RPM so it is best suited for a manual tranny. Both cams are very close in upper HP but the E303 comes on quicker off idle. And yes get valve springs to match.

 

i have an e in my car with a full gt40, car pulls fine till about 6k, the difference in total power is 5hp for actually sells two motors one with the e one with the b and they are rated @ 340 and 345hp, throw 1.7 rockers in it with the e cam and youll have same power as a be with better idle quality, atleast thats my experienc going from the b to the e in my car all other things being =

 

ive been told the B cam idles better than the E, is this false?

 

^^ True. The idle quality is a little better.

 

so if i get new afr heads on my engine, i should go with 1.7 rockers, and there should be no problems with piston to valve clearance.

 

reverse that!!

 

no?

 

well see i have a situation, for now I am running stock heads, i am going to throw an E303 cam in it (I have an auto transmission.. how will i know exactly which valve springs to put in my stock heads? and can i put roller rockers on my stock heads? thanks alot for your time guys, also I plan to put afr heads on it but I dont think I can afford it till next winter..

 

what about something like this guys, instead of the E303, i could get a package with the valve springs,
http://store.summitracing.com/defaul...=egnsearch.asp