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Username Post: 305 Chevy cam break in lube?        (Topic#358524)
Posts: 1

Reg: 10-20-19
10-20-19 05:08 PM - Post#2778354    

I have a 1979 305 30 over and all new everything machined and ready for reassembly , question is I coated the cam with Comp cam 103 lube (Link provided) prior to install and dang that stuff is so thin it ran right off the lobes which makes me wonder if I should find thicker lube that will actually stick to the lobes? Thanks in advance! SHAFT-AN...


"15th Year" Gold Supporting Member
Posts: 1428
Loc: Pasadena, Texas
Reg: 04-29-04
12-08-19 05:05 PM - Post#2781740    
    In response to Jackman

Over at jegs they have a break in material that is grey color, it looks like it sticks on the cam shaft, your hands and anything you touch, it may contain the zinc material.
I have seen STP used as assembly lube and then another can poured in the lifter valley.
But bAck to your point about that material you tried, is it red color?
I' m fixing to do a cam swap I'll be using that grey material and soaking the new lifters in a can of oil then dumping STP in the lifter valley.
Does it work?
I don't know, all I ever used was oil to assemble an engine, it worked

VC56S 2 door Sedan, 41 Years

[image] v-3564-1354211547.jpg[/image]

Posts: 460

Reg: 07-09-18
08-10-21 03:02 PM - Post#2824893    
    In response to Jackman

When I built engines, I used red grease to prelube the cam. It is not fancy but works fine. As soon as the engine starts turning whatever is there flies off and/or melts into the oil anyway.

Use red grease and keep the rpms up during the break in period.

"3rd Year" Silver Supporting Member
Posts: 2668
Loc: Belchertown, MA
Reg: 04-06-03
08-12-21 04:03 PM - Post#2825034    
    In response to Mercedes

running an aggressive cam/high spring press (roller/flat tap?)?
A break in oil specific would be good insurance.

Posts: 460

Reg: 07-09-18
08-15-21 12:27 PM - Post#2825212    
    In response to Bad56Sedan

There are billions of dollars wasted every year on "magic" lubricants. The one that I always laughed at was the cam lubes.

With the engine approaching 300 degrees inside any pre lube on the cam is melted off and washed off with the oil. Use the stiff red grease and keep money in your pocket.


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