anyone running a comp cam?
Thread Starter
|
Laughing Gas
Joined: Nov 2002
Posts: 1,143
Likes: 18
anyone running a comp cam?
I've thinking of checking into one for the '86 F-150 EFI 302. I'd like to get more out of this engine (only 8,000 miles on it since an overhaul). Any pros/cons or experience with the Comp Cams? Any tips on changing out cams? All info is appreciated. Thanks.
Posting Guru
Joined: Dec 2003
Posts: 1,483
Likes: 1
From: Northern California
Yes, I've had a few different CompCams and I'm happy with their performance. You'll want to give their techHelp line a call and ask them which cam they would recommend for your configuration and your goals.
Senior User
Joined: Apr 2004
Posts: 368
Likes: 0
From: NH
i'm running one. it's a custom grind, we just toredown the engine after about 500 hard miles most on the strip and the cam is still mint. if you have any mods make shure to let them know so they can grind the cam to what you need. you'll get more power this way than buying an off the shelf cam.
Thread Starter
|
Laughing Gas
Joined: Nov 2002
Posts: 1,143
Likes: 18
I called Comp Cams and they said the only one they really have for the EFI 302 is the 31-255-5. Checked on Summit for prices:
$154.39 - cam
$85.88 - lifters
$63.88 - valve springs
$59.39 - spring retainers
$6.95 - valve locks
$15.95 - valve seals
- - - - - - - -
$386.44 - total
I debating if I should do this to the '86 F-150. I'd rather use the '86 as the guinee pig since I don't use it as much as I use the car. Any suggestions? Since the trucks' engine only has 8,000 miles on it, do you think I should have to replace the springs and such, too?
$154.39 - cam
$85.88 - lifters
$63.88 - valve springs
$59.39 - spring retainers
$6.95 - valve locks
$15.95 - valve seals
- - - - - - - -
$386.44 - total
I debating if I should do this to the '86 F-150. I'd rather use the '86 as the guinee pig since I don't use it as much as I use the car. Any suggestions? Since the trucks' engine only has 8,000 miles on it, do you think I should have to replace the springs and such, too?
Thread Starter
|
Laughing Gas
Joined: Nov 2002
Posts: 1,143
Likes: 18
Trending Topics
Senior User
Joined: Apr 2004
Posts: 368
Likes: 0
From: NH
you should be fine with the stock springs as long as your not running it at red line. i thought the cam lift would be in the 300 area. don't know why i was thinking that. i'm running a .588 lift cam on bolth intake and exhaust with 112 deg of seperation. even being efi it doesn't like to idle so i'll be calling com cams back on that one soon. good luck and keep us posted.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Thread Starter
|
Laughing Gas
Joined: Nov 2002
Posts: 1,143
Likes: 18
What is the lift and specs for the stock cam on the EFI 302? I'm new to this cam stuff. More lift is better, correct? I just want to make sure that this Comp Cam will show a fair amount of improvement over stock. I'm pretty sure that the 31-255-5 cam will be going in my Grand Marquis when the time comes for an overhaul. Not sure if I should run it in the truck, too.
Senior User
Joined: Apr 2004
Posts: 368
Likes: 0
From: NH
yes more lift is better but to much is also bad (that's when pistons and valves get intimate and the end result is ugly) duration is how many degrees of turn that the valve is held open. the cam for your truck is most likely going to be a little bit of a different grind. as for the stock specs i'll try and find them.
Last edited by robduval; Jun 24, 2004 at 02:00 AM. Reason: add info
New User
Joined: Jun 2004
Posts: 21
Likes: 0
The high lift, short duration cam is disigned for what you got... stock heads with small restrictive ports. The exaust port are really small and restrictive. That is the reason for the split duration (valves open longer and lift is higher on the exaust). Looks like a pretty good choice numbers wise, but I'd still call their tech line for a perfect match. With lift any higher than that cam's will start to tread into the valve/piston marrage rob talked about, plus add unneeded strain to the valve train. That, and anything bigger will kill low end, and you'll be driving a dog that sounds good. Unless you want to start spending the $$$ for heads, gears, converters, etc...
Not sure whether the factory computer will like the cam though. That is one of the best reasons to call the cam tech line.
Not sure whether the factory computer will like the cam though. That is one of the best reasons to call the cam tech line.