MustangWorks.com - The Ford Mustang Power Source!

Go Back   MustangWorks.com : Ford Forums > Mustang & Ford Tech > Windsor Power
Register FAQ Members List Calendar

Notices


Reply
 
Thread Tools Rate Thread Display Modes
Old 10-27-2003, 11:43 PM   #1
Ieatcamaros
Domestic Rice really sucks!
 
Ieatcamaros's Avatar
 
Join Date: Apr 2002
Location: KY
Posts: 973
Default F303 and E7's

Will the stock springs handle the lift of an F303? Don't know much about the E7's, so I thought I'd ask before I break some springs in my brother's heads.
__________________
The sig says it all.
Ieatcamaros is offline   Reply With Quote
Old 10-28-2003, 10:16 AM   #2
Dark_5.0
Registered Member
 
Dark_5.0's Avatar
 
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
Default

No the stock springs cannot handle an F-303 cam. Not to mention if your heads are unported its a waste of time and money to install a cam that big. By the time you reach the cams power band your heads will have peaked long ago.
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim.
00' Lightning-Stock
88'CRX-13 second ego killer
Dark_5.0 is offline   Reply With Quote
Old 10-28-2003, 05:49 PM   #3
Coupe50h
Registered Member
 
Coupe50h's Avatar
 
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
Default

What he said.
I was using an e-cam with stock springs, and the car felt like it hit a brick wall at 5400 rpm, put on some cheap comp springs with a damper, and now it revs to 6250 without floating the valves, i shift around 5600 with my cam though.
__________________
X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's.
race weight 3,160

12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear

13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear
Coupe50h is offline   Reply With Quote
Old 10-28-2003, 06:46 PM   #4
Ieatcamaros
Domestic Rice really sucks!
 
Ieatcamaros's Avatar
 
Join Date: Apr 2002
Location: KY
Posts: 973
Default

I know that the cam is overkill for e7's, by all means, the e cam is overkill. I had it and he wants it. We were just going to put it in so when he gets the afr 165's, all we got to do is swap the heads. And it is much easier to put a cam in on the engine stand than in the car. Will the f cam break the springs?

Coupe50h, what kind of springs did you get?
__________________
The sig says it all.
Ieatcamaros is offline   Reply With Quote
Old 10-29-2003, 09:32 AM   #5
Dark_5.0
Registered Member
 
Dark_5.0's Avatar
 
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
Default

I dont think the F-cam will break the springs but you may have trouble in the upper rpms floating the valves.

If you plan on doing a head swap in the near future I would go ahead and drop in the cam. Cause it is alot easier to install a cam with the motor on a stand like you said.

Good luck,
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim.
00' Lightning-Stock
88'CRX-13 second ego killer
Dark_5.0 is offline   Reply With Quote
Old 10-29-2003, 08:52 PM   #6
red82gt
Sober voice of Reason
 
red82gt's Avatar
 
Join Date: Nov 1998
Location: Kelowna, B.C., Canada
Posts: 1,514
Default

You may get away with it, but you'd be pushing your luck. The stock spring pressure isn't great and you may be in danger of coil bind as well.
__________________
393W: AFR 205's, hydraulic roller, TKO600.
red82gt is offline   Reply With Quote
Old 10-29-2003, 10:03 PM   #7
Ieatcamaros
Domestic Rice really sucks!
 
Ieatcamaros's Avatar
 
Join Date: Apr 2002
Location: KY
Posts: 973
Default

What exactly is "floating the valves"? I have heard this time and time again. I have a pretty good idea of what it means, but I had rather know.
__________________
The sig says it all.
Ieatcamaros is offline   Reply With Quote
Old 10-29-2003, 10:49 PM   #8
rwhite65
Ride Hard
 
rwhite65's Avatar
 
Join Date: Oct 2000
Location: Wyoming IL
Posts: 1,094
Default

guys who have done this often before, correct me if I am wrong. I believe it sounds like crap when the car is revved to high. The only few times I have seen it done, sounded like a cross between fouled plugs and a car that is revved to the limit pill (like a MSD 6AL).
Ryan
__________________
65 Fastback 91 roller 306, H/C/I
AOD-Bauman, PI Stallion, 4.10's and traction loc

04 Grand Cherokee Freedom Edition

79 Ford F-250 4x4 - Restored
rwhite65 is offline   Reply With Quote
Old 10-30-2003, 02:31 PM   #9
QuantumMotorsports
Registered Member
 
Join Date: Jul 2000
Location: Norman, Oklahoma, USA
Posts: 597
Default

It means that the valves are unable to seat fully before the end of the compression stroke and the plug fires while the valve is slightly open. valve float = almost no compression at high RPM + mega nasty sounds coming out of the exhaust
__________________
Michael Black
QuantumMotorsports
Norman, OK

1984 LX Hatch
306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat.
Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites
QuantumMotorsports is offline   Reply With Quote
Old 10-31-2003, 03:46 PM   #10
Coupe50h
Registered Member
 
Coupe50h's Avatar
 
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
Default

you might try looking at old post using search, but i dont remember the part# cca-942 is what i want to say, but not sure?

I suggest you get the crane kit made for 5.0s so you have all the right retainers, im probaly near coil bind using my stock retainers with these springs.
__________________
X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's.
race weight 3,160

12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear

13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear
Coupe50h is offline   Reply With Quote
Reply



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

Forum Jump


All times are GMT -5. The time now is 04:17 AM.


SEARCH