crazy question
Elder User
Joined: Feb 2004
Posts: 909
Likes: 9
From: San Luis Obispo, CA
Actually, the mechanical cam is more complex than the hydraulic. There are "quieting" ramps before & after the main cam lobe. These ease the valve train through the valve lash & help keep down the noise. The hydraulic lifter allows running at zero lash, so these extra parts of the lobe shape are not necessary.
There may be more differences, so I'll watch this thread & see if I can learn something new.
P.S.: I once owned a '57 panel w/223 & OD. (Oh, I also once owned a '65 F-100 w/390 & 4-spd.) Congratulations on your good taste in trucks!
There may be more differences, so I'll watch this thread & see if I can learn something new.
P.S.: I once owned a '57 panel w/223 & OD. (Oh, I also once owned a '65 F-100 w/390 & 4-spd.) Congratulations on your good taste in trucks!
Thread Starter
|
Logistics Pro
Joined: Mar 2005
Posts: 3,771
Likes: 80
From: tujunga, calif
thats along the lines of what I wanted to know, is it just the grind or is there any difference in the material the cam is made of?? I remeber back in the day when some guys in the nieghborhood with 55 Chebbies pulled the hydrulic lifters and put in solids on the same cam...so it made me think what would happen doing this or putting hyd lifers on a solid cam??? anyone ever try this
Elder User
Joined: Feb 2004
Posts: 909
Likes: 9
From: San Luis Obispo, CA
Solids on a hydraulic cam would be noisy and would probably beat themselves to death eventually, but the other way around should work. Most of the stock cams and the low-end aftermarket cams are cast iron that are heat-treated on the surface. The cast-iron lifters are similarly hardened and are compatible. More exotic cams are hardened steel and their lifters are different - right now the details elude my memory. Maybe someone else can expand on this.
Senior User
Joined: Sep 2006
Posts: 162
Likes: 0
From: Newbury Park Ca.
Zero lash hydrolic lifters on a solid profile will really scream, won't idle, in fact it'll hardly run under 2K, but the top end is awesome.......Won't work!!!! The ramp to take up the lash will be opening the valve instead of taking up the lash. Way too much overlap/duration.............aMP
Thread
Thread Starter
Forum
Replies
Last Post
oldblue31
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
1
May 21, 2005 08:13 PM
