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75gmck25
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From
Northern Virginia
Joined
Oct 13, 2016
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Yesterday at 7:42 PM
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75gmck25
replied to the thread
Valve adjustment question
.
I’ve always been told to shake the pushrod up and down to find zero clearance. When you use the spin method you are trying to find...
Tuesday at 8:48 AM
75gmck25
replied to the thread
Swapping the 350 for a Crate
.
A little more explanation about my suggestions. - two piece rear main seal was used on earlier engines, but GM later started using an...
May 11, 2022
75gmck25
replied to the thread
Swapping the 350 for a Crate
.
Also take a close look at specs of the low end crate engines. You definitely want to get 64cc Vortec or better heads that give you...
May 10, 2022
75gmck25
replied to the thread
So, what's this emblem signify?
.
In most years it was listed as the Z81 Camper Special , so look for that RPO code for your year to get the list of mods. It was only...
May 7, 2022
75gmck25
replied to the thread
Extremely loose steering
.
I agree, steering box gear adjustment is the last step. There used to be a lot of articles with “tips” about fixing your steering play...
May 7, 2022
75gmck25
replied to the thread
Quadrajet question
.
I’ve had a wide band AFR gauge for quite a while. It’s useful for measuring AFR at cruise or while accelerating, but not that great...
May 5, 2022
75gmck25
replied to the thread
Valve stem seals info needed and is it worth while in my case?
.
Just a suggestion - the inexpensive tool should work fine for stock springs, but if you ever buy upgraded performance heads you want...
May 4, 2022
75gmck25
replied to the thread
dual battery conversion
.
There are battery isolator kits that do a good job, or you could try the very simple setup that was stock on my ‘75 GMC. It’s not fancy...
May 4, 2022
75gmck25
replied to the thread
Tailgate differences
.
They also changed the GM logo position on the tailgate. On older trucks like my ‘75, the GMC or Chevrolet was centered on the tailgate...
May 2, 2022
75gmck25
replied to the thread
Ignition switch rod won't stay in on '78 K10
.
LMC truck sells the plastic “cluster backing plate” for about $60. You might also want a new printed circuit (wiring for the cluster)...
May 1, 2022
75gmck25
replied to the thread
Valve stem seals info needed and is it worth while in my case?
.
I would fix the valve seals, and then really think hard before going down the crate engine route. The cheapest new crate engines...
Apr 30, 2022
75gmck25
replied to the thread
Chevy 350 HO connect and cruise running hot
.
Even if it’s at 212 that won’t hurt anything. Many modern engines run at that temp, and even up to about 225 would be okay. A few...
Apr 24, 2022
75gmck25
replied to the thread
Some timing questions (experiencing some spark knock)
.
The article you found on tuning that used a maximum advance of 34-36 degrees is generally correct, but a little backward from the way...
Apr 24, 2022
75gmck25
replied to the thread
looking for 17 inch wheels
.
Many new 8 bolt wheels are designed to be hub centric, so the diameter of the hub is critical (I thinks it’s slightly smaller than older...
Apr 24, 2022
75gmck25
replied to the thread
Take a guess
.
I believe most GM starters have an R terminal (steps down the voltage to 9 volts for the points while running) and an S terminal (...
Apr 24, 2022
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