Will it hurt anything setting lash couple thou tighter
#2541970
08/27/18 12:15 PM
08/27/18 12:15 PM
|
Joined: Jan 2003
Posts: 11,707
Portage,michigan
B3422W5
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 11,707
Portage,michigan
|
Solid lifter cam
Card calls for 22 hot
Any problem trying 20 hot?
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2541972
08/27/18 12:16 PM
08/27/18 12:16 PM
|
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
|
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542000
08/27/18 01:28 PM
08/27/18 01:28 PM
|
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
As long as there is adequate v/p clearance you can run them as tight as you want.
When you get too far up the clearance ramp of the cam, the power will start falling off.
I often ran cams on “the big side”(for the application) in my own stuff, and they usually responded favorably to looser lash settings rather than tighter.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: fast68plymouth]
#2542002
08/27/18 01:37 PM
08/27/18 01:37 PM
|
Joined: Feb 2005
Posts: 20,158
PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,158
PA.
|
It been awhile but I think I was down to .008-.010 on my aluminum block aluminum heads cold.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: fast68plymouth]
#2542003
08/27/18 01:40 PM
08/27/18 01:40 PM
|
Joined: Jan 2003
Posts: 11,707
Portage,michigan
B3422W5
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 11,707
Portage,michigan
|
As long as there is adequate v/p clearance you can run them as tight as you want.
When you get too far up the clearance ramp of the cam, the power will start falling off.
I often ran cams on “the big side”(for the application) in my own stuff, and they usually responded favorably to looser lash settings rather than tighter. As you know, mine is definately one size too big. So figured next lash( this week) try little tighter
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542005
08/27/18 01:48 PM
08/27/18 01:48 PM
|
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
You feel it’s on the big side....... so you want to try making it bigger with tighter lash?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: fast68plymouth]
#2542014
08/27/18 02:12 PM
08/27/18 02:12 PM
|
Joined: Jan 2003
Posts: 11,707
Portage,michigan
B3422W5
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 11,707
Portage,michigan
|
You feel it’s on the big side....... so you want to try making it bigger with tighter lash? Your right. My thinking was the opposite of correct..... lol Tighter makes the cam bigger, looser, more clearance..... smaller. Shucks, darn it
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542018
08/27/18 02:22 PM
08/27/18 02:22 PM
|
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
Can’t hurt to try both........ might work, might not.
It’s like playing with jetting and timing....... just gotta find what it likes.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542039
08/27/18 03:10 PM
08/27/18 03:10 PM
|
Joined: Oct 2007
Posts: 4,206
New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,206
New York
|
If you guess wrong (too tight) on an exhaust valve, expect to pay for it.
Boffin Emeritus
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542055
08/27/18 03:32 PM
08/27/18 03:32 PM
|
Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
|
Solid lifter cam
Card calls for 22 hot
Any problem trying 20 hot? Been setting em .008-.010 tighter forever..........My Isky solid roller calls for .026 hot and I've been setting em at .012-.014 cold forever and en up in the .020 hot zone.......... 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542083
08/27/18 05:10 PM
08/27/18 05:10 PM
|
Joined: Feb 2005
Posts: 4,311
Prospect, PA
BSB67
master
|
master
Joined: Feb 2005
Posts: 4,311
Prospect, PA
|
I've only had a few solids, all in different motors. Two picked up with looser than recommended lash. The other was already at .030 and .028 per the manufacturer and tightening it slowed it down.
I theorized that my junk, with marginal to poor exhaust, tight converter, and shorter stroke generally performed better with less seat timing.
When you run the numbers, 0.004" might change seat timing 10°, but only change the 0.050" numbers by 3°. Kinda like making the ramps faster without changing the cam. Of course, its still a net smaller cam.
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: B3422W5]
#2542188
08/27/18 09:54 PM
08/27/18 09:54 PM
|
Joined: Oct 2007
Posts: 4,206
New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,206
New York
|
How would it change the .050" at all?
Boffin Emeritus
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: Thumperdart]
#2542194
08/27/18 10:08 PM
08/27/18 10:08 PM
|
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366
I Live Here
|
I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
|
Solid lifter cam
Card calls for 22 hot
Any problem trying 20 hot? Been setting em .008-.010 tighter forever..........My Isky solid roller calls for .026 hot and I've been setting em at .012-.014 cold forever and en up in the .020 hot zone.......... ^^^this 
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
|
|
|
Re: Will it hurt anything setting lash couple thou tighter
[Re: polyspheric]
#2542267
08/28/18 12:28 AM
08/28/18 12:28 AM
|
Joined: Feb 2005
Posts: 4,311
Prospect, PA
BSB67
master
|
master
Joined: Feb 2005
Posts: 4,311
Prospect, PA
|
How would it change the .050" at all? At the valve it will. Your an awful smart guy to ask such a question.
|
|
|
|
|
