282 S cam, valve lash question
Thread Starter
Burning Brakes
Joined: Jan 2000
Posts: 997
Likes: 0
From: Columbus, IN USA
282 S cam, valve lash question
I have a 282S cam. same spec as Comp Cams but I bought it from Bullet, formerly the Lunati machinists before Holley bought them.
The comp cams spec are the same except lash
Comp Cams is 22 int & exh
Bullet is 24 int & 26 exh.
I am going with Bullets specs but it had me wondering why they recommended a different spec from Comp Cams
.....................................INT AKE........EXHAUST
DURATION AT .050...........236.............236
LOBE LIFT........................330......... ....330
LOBE SERATION........................110
SEAT DURATION AT .020...282............282
GROSS VALVE LIFT...........495............495
VALVE LASH (HOT)...........024............026
DEGREE INTAKE LOBE TO...........106 ATDC
[Modified by BLT-71, 10:45 AM 1/23/2002]
The comp cams spec are the same except lash
Comp Cams is 22 int & exh
Bullet is 24 int & 26 exh.
I am going with Bullets specs but it had me wondering why they recommended a different spec from Comp Cams
.....................................INT AKE........EXHAUST
DURATION AT .050...........236.............236
LOBE LIFT........................330......... ....330
LOBE SERATION........................110
SEAT DURATION AT .020...282............282
GROSS VALVE LIFT...........495............495
VALVE LASH (HOT)...........024............026
DEGREE INTAKE LOBE TO...........106 ATDC
[Modified by BLT-71, 10:45 AM 1/23/2002]
Drifting
Joined: Mar 2001
Posts: 1,396
Likes: 7
From: Indiana
Re: 282 S cam, valve lash question (BLT-71)
I'm not sure why they specify the different lash,but changing lash is just another way of tuning for your desired powerrange. Loosening up the lash by .002-.004" will move you powerband a small amount and drop the overall profile of the cam producing more low end torque, while tightening it will have the opposite effect and raise the top end power.If I remember this right, the rule of thumb that I have always heard is to try and stay within .008max of the specs. Any looser or tighter may cause premature wear on the cam.
Thread Starter
Burning Brakes
Joined: Jan 2000
Posts: 997
Likes: 0
From: Columbus, IN USA
Re: 282 S cam, valve lash question (BLT-71)
I was wondering what would happen if I change the lash to 22.
But I want to be sure before commiting. I'm happy with the settings now but can I be happier. :)
But I want to be sure before commiting. I'm happy with the settings now but can I be happier. :)
