E or F 303 Cam??? - MustangForums.com


General Tech Ask model specific questions in the appropriate category below. All other general questions within.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-03-2007, 02:12 PM   #1  
capri_83
1st Gear Member
Thread Starter
 
Join Date: Jun 2007
Location:
Posts: 125
Default E or F 303 Cam???

I have a 90 H.O. block with heart shaped head and 10:1 Prode Forged pistons, The Engine shop installed a Crane Compu Cam 2020, I was at the track, and it floats valves at 4800 to 5000 RPM. I think they may not have used the rite springs. So here is the question would a E-303 or F-303 work better.(this is an carb. car, 5spd, 4:10 gears, headers)
capri_83 is offline   Reply With Quote
Old 06-03-2007, 02:50 PM   #2  
hotrod7687
3rd Gear Member
 
Join Date: Jul 2006
Location: Texas
Posts: 721
Default RE: E or F 303 Cam???

If its isyour springs, it wouldbe much easier to just order some new springs. Its not very hard to replace the springs. Check with the shop and see if they used new springs or reused the old ones. Its not necessary to remove the springs when installing a cam, so they might not have touched them.
hotrod7687 is offline   Reply With Quote
Old 06-03-2007, 04:02 PM   #3  
capri_83
1st Gear Member
Thread Starter
 
Join Date: Jun 2007
Location:
Posts: 125
Default RE: E or F 303 Cam???

they reused stock springs... but even with spings for this cam valve float is spec'd at 5400rpm.... stock cam the engine use to have I shifted at this rpm..... to change the cam is no big deal.... just need to know which one.... next year car will get performer heads... and I only want to change the cam once..
capri_83 is offline   Reply With Quote
Old 06-03-2007, 05:03 PM   #4  
hotrod7687
3rd Gear Member
 
Join Date: Jul 2006
Location: Texas
Posts: 721
Default RE: E or F 303 Cam???

Thats a really low rpm for a spring to say it will start floating valves. I could see it from tired stock springs, but a good new spring should hold at least through 6k.

The best advice I can give on cam selection is to call the company you want the cam from and talk to them about what you need. I use comp cams, theyre xtreme energy line is the best ive ever used, and tech support is awesome. Ive called them on my last 3 builds, just to get advice on which cam they thought would be best. Tell them what you want from your motor, what mods you have, etc. and they can recommend something for you.
hotrod7687 is offline   Reply With Quote
Old 06-03-2007, 09:07 PM   #5  
capri_83
1st Gear Member
Thread Starter
 
Join Date: Jun 2007
Location:
Posts: 125
Default RE: E or F 303 Cam???

It's not the springs, it's the cam spec sheet that says it will float valves at that rpm, and I will be talking to the engine shop and the cam company on monday, but I was just trying to get some insight... if anyone has had any problems going for stock to E-or F-303...once again thisis a carb. car so idle andemissions are not a problem.I already know that the crane compu cam 2040 (new part# 444231) is the e-303 ford cam, this cam that is in the motor now seem to be more for an auto and low rpm. thanks for the info and I'll see what the engine shophas to say..
capri_83 is offline   Reply With Quote
Old 06-03-2007, 11:56 PM   #6  
ih8chevy
5th Gear Member
 
ih8chevy's Avatar
 
Join Date: Oct 2006
Location: west chester
Posts: 3,305
Default RE: E or F 303 Cam???

neither one will be that good, go wit a trick flow 1 cam, they are cheaper and better than both the f and e cam, sounds better too. if u wanna get pretty nasty go wit a trick flow 2 cam, or comp cams.jmo good luck
ih8chevy is offline   Reply With Quote
Old 06-06-2007, 02:28 PM   #7  
capri_83
1st Gear Member
Thread Starter
 
Join Date: Jun 2007
Location:
Posts: 125
Default RE: E or F 303 Cam???

Just to update..... I went to the engine shop and we install new spings with much higher pressure and BOB'S UR UNCLE...... 5500rpm shifts.....all is goooood......thanks guys....
capri_83 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4 Valve Head questions GimpyHSHS 4.6L (1996-2004 Modular) Mustang 11 03-12-2018 04:16 PM
Any tuner available 95 3.8 ?? patchshaffer Tuner Central 3 10-05-2015 02:24 PM
So who wins uedlose The Racers Bench 4 10-01-2015 08:31 PM
Centerforce Clutch, will a exedy flywheel work? junior04 4.6L (1996-2004 Modular) Mustang 1 09-28-2015 10:53 AM
Cam and rear end gear questions Ryan Fitzpatrick New Member Area 3 09-14-2015 02:21 AM


Tags
2020, 50, 57, cam, carberator, compu, compucams, e303, f303, good, hemi, idle, problems, replace, rpm, sounds

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 03:45 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.