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  #41  
Old 04-28-2019, 05:23 PM
jcisworthy jcisworthy is offline
232 I6
 
Join Date: Apr 01, 2016
Location: Amsterdam NY
Posts: 30
Quote:
Originally Posted by babywag
So I cannot find my adjustable pushrod...

Doing the math 18 tpi is .056 @ 1 full rotation?
Which means to obtain .020-.030 = ~1/2turn(.028) after zero lash?

Correct
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  #42  
Old 04-29-2019, 06:23 AM
pickledtoast pickledtoast is offline
232 I6
 
Join Date: Feb 13, 2018
Location: NJ
Posts: 28
Yes, your math is correct.

LS1 rocker puts the pushrod seat .040" lower than the AMC rocker from my '90. The AMC rocker ratio measured 1.605, LS rocker 1.715. That's just straight measuring the rocker, not the actual valve lift vs lobe lift measured with a test spring (my engine is still in pieces).

I'm going with the summit K8600 camshaft kit which as .080 smaller base circle on exhaust, .050 on the intake. So I may be able to reuse the factory pushrods on the exhaust and compress the lifter .015 more on the intake.

But the heads, deck were touched, different brand lifters, who knows how the head gasket thickness matches the oem, so I'll find out when I assemble.
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  #43  
Old 07-14-2019, 06:31 AM
JeepsAndGuns's Avatar
JeepsAndGuns JeepsAndGuns is offline
AMC 4 OH! 1
 
Join Date: Jul 18, 2003
Location: Cullman, AL
Posts: 4,568
Curious if anything came of this, or has the project been shelved?
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79 Cherokee Chief 401/T18/D20, MPFI fuel injection, hydroboost, otherwise stock.
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  #44  
Old 07-15-2019, 11:54 AM
pickledtoast pickledtoast is offline
232 I6
 
Join Date: Feb 13, 2018
Location: NJ
Posts: 28
My engine is together with the factory rockers and pushrods, just changed the oil after break-in. I'll get to swapping in the LS rockers eventually.
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  #45  
Old 07-24-2019, 07:57 PM
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babywag babywag is offline
out of order
 
Join Date: Jun 08, 2005
Location: Land of froot loops and cukcoo-nuts, CA
Posts: 9,450
I have a ton of stuff higher on my list but I will get to it eventually.
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'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon
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  #46  
Old 10-13-2019, 04:43 PM
yossarian19 yossarian19 is offline
258 I6
 
Join Date: Nov 13, 2016
Location: Grass Valley, CA
Posts: 399
Any update?
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  #47  
Old 10-15-2019, 10:01 AM
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babywag babywag is offline
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Location: Land of froot loops and cukcoo-nuts, CA
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Quote:
Originally Posted by yossarian19
Any update?

Nope...still pretty low on my list.
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'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon
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  #48  
Old 10-15-2019, 11:25 AM
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Chevelleguy Chevelleguy is offline
 
Join Date: Jul 20, 2003
Location: Hughes Springs, TX
Posts: 5,565
I am beginning the engine rebuild process and am going to dive into this too. Ordered a set of Procomp stainless, adjustable LS rockers in a 1.8 ratio to try. The adjustable pushrod seat should fix any minor pushrod issues. I will let you know how it looks after I get the heads back from the machine shop. I got them cheaper than this, but these are the same ones.

https://www.summitracing.com/parts/s...1118?rrec=true
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83 Wag Lt,BJ's 6"lift,360/727/Pinned229,D44/trac-lok,AMC20/lock-right,35/12.50 Baja MTZ,Pro-Jection EFI.
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  #49  
Old 10-16-2019, 09:49 AM
Ristow Ristow is offline
 
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Location: The Great Googley Moogley Midwest.
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1.8,wow you want good valve springs they are gonna open and close fast.
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  #50  
Old 10-17-2019, 07:01 AM
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Chevelleguy Chevelleguy is offline
 
Join Date: Jul 20, 2003
Location: Hughes Springs, TX
Posts: 5,565
Quote:
Originally Posted by Ristow
1.8,wow you want good valve springs they are gonna open and close fast.


I got a complete Comp 268H cam kit. 1.8 will put the valve lift at .513, which is only another .057". I got these for less than it would have cost me to replace them with factory rockers so if they work out it's a win. If they don't work I can probably sell them to someone at work. We have a lot of LS guys here.
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David "If all else fails, read the instructions."
83 Wag Lt,BJ's 6"lift,360/727/Pinned229,D44/trac-lok,AMC20/lock-right,35/12.50 Baja MTZ,Pro-Jection EFI.
10$ NP229 fix http://www.ifsja.org/forums/vb/showthread.php?t=2520

Last edited by Chevelleguy : 10-25-2019 at 07:01 AM.
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  #51  
Old 10-24-2019, 10:14 AM
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Chevelleguy Chevelleguy is offline
 
Join Date: Jul 20, 2003
Location: Hughes Springs, TX
Posts: 5,565
Well preliminary fitment looks good. Just bolted them on a head, no cam. The roller tip is in the very center of the valve stem and the spacing is correct. Won't know until I get the motor assembled if I will need custom push rods or if shimming of the pedestal will be necessary.
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David "If all else fails, read the instructions."
83 Wag Lt,BJ's 6"lift,360/727/Pinned229,D44/trac-lok,AMC20/lock-right,35/12.50 Baja MTZ,Pro-Jection EFI.
10$ NP229 fix http://www.ifsja.org/forums/vb/showthread.php?t=2520
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  #52  
Old 10-24-2019, 11:01 AM
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rang-a-stang rang-a-stang is offline
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