Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

"Peanut Cam" Questions

Thread Tools
 
Search this Thread
 
Old 07-12-2001, 03:19 AM
  #1  
Supreme Member

Thread Starter
 
Sitting Bull's Avatar
 
Join Date: Jun 2001
Location: Calgary, Alberta, Republic of Western Canada
Posts: 3,238
Likes: 0
Received 4 Likes on 4 Posts
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
"Peanut Cam" Questions

Why is it called the Peanut Cam?

What is its power range?

Tell me all you know about it. On another forum some guys were calling the peanut cam "a myth."

What is a good cam to replace it with on my stock LG4? I want just as smooth an idle as I have right now guys, but more horsepower in the off-idle to 4500rpm range. I don't want any erratic idling.

Thanks a bunch

------------------
1986 Camaro Sports Coupe
T-tops, power hatch, third brake light
LG4 305 V8, "Damonized" Q-Jet 4bbl, K&N filter
Crane ignition kit, TH700R4 transmission
Air, pw, pl, pb, ps
Kenwood cassette, Pioneer 6x4 component front speakers
Rockford Fosgate 6x9 Punch rear speakers
Aluminum slots and Goodyear 225x60R15 Eagle HP tires
Old 07-12-2001, 03:36 AM
  #2  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
A Comp XE256H would probably do pretty good. 212/218 @ .050, .447/.454 lift, 110 LSA. Comp says it makes power from 1000 to 5200 RPM.
Old 07-12-2001, 08:53 AM
  #3  
Senior Member
 
MikeInAZ's Avatar
 
Join Date: Oct 1999
Location: Portales, NM USA
Posts: 735
Likes: 0
Received 2 Likes on 2 Posts
Car: 86 T/A
Engine: 5.0 TPI
Transmission: 700R4
I believe it is a "slang" term used because it has very small lobes, very mild. The implication being like a peanut with small humps.
Old 07-12-2001, 10:19 AM
  #4  
Supreme Member
 
RB83L69's Avatar
 
Join Date: Jul 1999
Location: Loveland, OH, US
Posts: 18,457
Likes: 0
Received 15 Likes on 15 Posts
Car: 4
Engine: 6
Transmission: 5
It is not a myth.

All LG4s got it, among various other engine options that are hotly debated. It is the most pitiful cam GM has ever forced onto an unsuspecting public as far as I know, even worse than the .390/.410 POS that was partly responsible for 165 HP 350s in the 70s. Its specs are in the tech section of this website.

The Comp XE256 is a popular choice for that motor. However, the exhaust is so bad, about as bad as the cam in fact, that just changing out the cam will have relatively little effect. I strongly recommend an exhaust system all the way from the heads to the street, otherwise you won't get anywhere near the full benefit of the cam. When you get an exhaust, do it all at once, and DON'T get the direct LG4 replacement, because if it bolts up to the stock LG4 exhaust, it has to be the little weenie pipe sizes that the stock one os made of. Get a whole exhaust for a L69 or TPI car; headers, cat, and cat-back.

------------------
"So many Mustangs, so little time..."
ICON Motorsports
Old 07-12-2001, 11:02 AM
  #5  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Don't worry, we've got his exhaust situation covered.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fasteddi
Organized Drag Racing and Autocross
15
09-10-2015 09:32 AM
masonta
Power Adders
0
09-01-2015 06:40 PM
Bubbajones_ya
Electronics
4
08-31-2015 12:02 PM
ezobens
DIY PROM
8
08-19-2015 10:29 PM
redmaroz
LTX and LSX
7
08-16-2015 11:40 PM



Quick Reply: "Peanut Cam" Questions



All times are GMT -5. The time now is 05:33 AM.