dislike e303 cam

lefty · Post by **lefty** » Mon Apr 02, 2007 8:36 pm

I'm not happy with my e303 camshaft with the auto trans.
have to run the idle to high , wants to load up in gear , no power at lower end
does anyone else feel this way or am I missing something

87ranger · Post by **87ranger** » Tue Apr 03, 2007 5:04 am

your missing something,,, sounds like you have a tuning issue with your carb and nothing to do with your cam

cgrey8 · Post by **cgrey8** » Tue Apr 03, 2007 5:47 am

I always thought the lack of torque at the bottom-end was a common complaint of the E303? The other stuff sounds like a tuning issue. From what I understand, the E303 should idle and cruise fine.

87ranger · Post by **87ranger** » Tue Apr 03, 2007 5:57 am

i think you have timing issues and carb air bleed issues, i always found my e cam to be very punchy on my 302, try bumping you timing to 14 and leaning it out alittle, you dont mention your compression and that has a direct affect on throttle responce and low end toqure

lefty · Post by **lefty** » Tue Apr 03, 2007 6:15 pm

I like want I'm hearing dont get me wrong I do like the cam it sounds great and has great midrange , I will try the tunning some more . my biggest issue is that once it is in gear I have to use alot of brake to hold it back ( im sure the high idle is to blame for most of that). i was going to try a stall speed converter but unfortunately my trans is a c5 with the big converter . but I will give your suggestions a try before I pull the cam out . any more comments or suggestions would be helpful keep up the good work gang thanks LEFTY

87ranger · Post by **87ranger** » Tue Apr 03, 2007 6:28 pm

when you bump the timing and lean it out a little, the idle will go even higher so close the throttle blades some more to keep the engine out of the stall range of the stock converter, lazy timingcombined with an idle "against" the converter will cause your problems

lefty · Post by **lefty** » Tue Apr 03, 2007 6:36 pm

thanks 87ranger I will give it a try

MalcolmV8 · Post by **MalcolmV8** » Tue Apr 03, 2007 8:12 pm

I have the e303 in my red truck and while I don't have power problems the idle is very weak and lopey. I can see how an auto would just kill the motor when putting it in gear unless you had a fairly high idle. I'm running about 18* timing and no pinging.

stranger · Post by **stranger** » Wed Apr 04, 2007 5:00 am

while you have the timming light on it,re connect vac line and raise to 3k you should see 30-32* advance tdc.if not thats your problem

enigma88 · Post by **enigma88** » Wed Apr 04, 2007 6:06 pm

What kind of setup do you have? Carb / intake / electronics.. There is alot of variable to be taken in to considertation. I love carbs but sometimes a real pain... Though I won't say my fuelly doesn't have its little demons....

I am using the E303 cam in my setup and I think it is quite responsive... I am using a stock AOD from and econoline van with the torque convertor that I got cheap. When i started the engine for the first time and it was sitting at 700 RPM. I think I may have been pretty lucky. I thought I would have had alot more speed bumps..

Have fun with the speeding tickets you are sure to get!!!!!!!!!!!

87sc302 · Post by **87sc302** » Wed Apr 04, 2007 7:40 pm

I had similar problem with my truck.

Which edelbrock intake performer or performer RPM ?
and the 600 carb is it the 1406 model?
Edelbrock does not recommend the 1406 with the RPM intake.

Changed to a provac 650 holley from Quik Fuel Technology this made all the difference. Electric choke not as good as Edelbrock but the performance is fantastic.

yosoykoy · Post by **yosoykoy** » Thu Apr 05, 2007 4:47 am

well i have heard horror stories that the e303 with a fuel injected set up from the explorere will not work due to the fact that it doesn't creat enough vaccum. i know it is kinda unrelated, but was just wondering if this is true. since everyone had the e303 cam on the brain. and i think i saw a link here on but can't remember.

87ranger · Post by **87ranger** » Thu Apr 05, 2007 5:22 am

actually the E cam was designed for ford by crane as a direct emissions legal replacement cam to work with all the factory tuning parameters in the stock computers,any time you go with any cam spec that is larger than the factory one you will begin to experience some idle "chop" or lope and it all depends on how large you go

lefty · Post by **lefty** » Fri Apr 06, 2007 8:56 pm

well gang I would like to tell you that this site is very helpful ! I took some of your suggestions and I think its getting better. set the timing at 16* did a little air screw adjustments took it for a ride and what a differance .still needs a little more but its looking better. one question should the vacumn advance run of timed port or off direct vaumn port . will line hooked to timed port idle is a little flat. with line hooked to direct port idle is choppy sounds great but then I have to set idle rpm higher to keep it running. sorry if these questions are dumb. but your helping out an old stock car racer .( not to many red lights on the circle track idle was not a concern ) thanks in advance and again thanks for the site

87ranger · Post by **87ranger** » Sat Apr 07, 2007 6:20 am

it should only be run off a timed port or it will provide excessive and undesireable advance at idle, if its flat off idle change your weights or springs to bring in the mechanical advance sooner