B-E-F-X-Z-303....I'm SO fuggin' Confused!!

Katmandu

Katmandu

Founding Member
Apr 7, 2002
302
0
17
Troy, Ohio
#1
SOMEBODY please make sense of the alphabet Cams!!

Is there a GOOD way to decipher WHICH Camshaft will work with any given situation ?? :shrug:

My application is an local street driver Vert (limited strip usage), ported lower, 65mm TB, ported E7s (maybe GT40Ps later), long tubes, 73mm MAF, 5speed, 3.55s, 1.7 RRs.

I WANT a Lopey idle, strong Mid-Upper range HP/Torque.... I don't give a crap about MPG, but need it to be streetable.

Which Can do you "experts" suggest I stuff in ??
 
#2
You wan't best all-around power, B303 cams is sweet.A little more mid range pulling power, E303.Bad Boy 3500rpm+ cam, X303.F303 is more of a supercharger/nitrous cam.Z303 is too big for a 302 with thous heads.
 
#3
The E cam probally has the widest powerband. You will hear it in the idle, but will have good power all the way up. The B will be stronger top end but weaker bottom end, and will lope real hard due to it's narrow LSA. The F cam, it's hard to say, it's suposed to be more agressive but I have heard that cam and it doesn't seem as hard as my B cam. Z and X are some pretty harsh cams, I am sure you would loose some bottom end.
 
#5
QDRHRSE said:
The E is probably your best choice....and like 90mustangGT already said, the B will bull harder at high RPMS and sound nastier. For some reason some people have trouble getting the E cam to idle.
Click to expand...
Because it sucks too much vacuum at idle. The cure is simple, drill a hole in the TB's butterfly plate (if one isn't present, if so then drill slightly larger). The E will prob be your best bet, it still has good torque but pulls hard until its limit. Good all-around cam for a good breathing engine.
 
#6
Go with the Trickflow Stage 1. Idle sounds great, nice lope, will shred the tires off the line, and pulls great at 3500+, and I have stock unported heads, the cam made a huge difference. It's cheaper too.
 
#7
Katmandu said:
..... I WANT a Lopey idle, strong Mid-Upper range HP/Torque.... I don't give a crap about MPG, but need it to be streetable.
Click to expand...

I have the B303 with 100% stone stock heads and 1.72:1 roller rockers. It has lope and it pulls like freight train from about 3500 rpm up to about 6000. I run 3.73 gears and 275/50 regular radial tires. I get 18+ mpg on the highway. I walked away from a guy with an E303 in his car on the highway like he was sitting still from a 65 mph start speed. We both downshifted...I blew him away. He was like 20 car lengths back when I let off and he never let off. I slowed down to 70 mph and let cruise control do the throttle and he went by me at well over 100 mph. He was not very happy that I walked him so bad. He doesn't like me anyway, so it made him more angry. LOL :D

B303 will give you what you want.
 
#9
I have the e cam, mainly because when I go back to NJ I have to run it through the snuffer. at first I had trouble with the idle, played with it a bunch of times to finally get a really good idle. You will only get a messed up idle at first start up when the car is in closed loop (right)?? car pulls like a champ from 3000 and up. not to sure how it will idle after I install my pulleys and electric fan but I will work it out. :nice:
 
#10
IndyBlk5.0 said:
check out ebay, my b303 is for sale with a buy it now of 125...
Click to expand...

Just so you know where you are starting from....you can buy the B303 for $165 brand new in a box from Summit or Jegs. I've seen it in MNM&FF for as little as $150.

Used roller cams are A-OK as long as long you use new roller lifters.

New cam-used roller lifters = OK
New cam-new roller lifters = OK
Used cam-new roller lifters = OK
Used cam-used roller lifters = NOT OK
 
#12
another vote for the e-cam, i really like it, i had the idle problem, but when i got it dyno tuned it fixed it, now it idles like if it was a stock cam, with a really nice lope to it, sounds really bad ass with lt, o/r h pipe and 2 chamber flows, also pulls like a bitch, but that could also be the 8 lbs of boost :D
 
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