Solved. Truck Norris cam install need help!

[iamdub]

You seem like an excellent candidate for adjustable pushrods or rockers!

This ol' mill ain't worth all that!

The next one will have untouched or precision CNC'ed heads so consistency wouldn't be an issue.

 

[iamdub]

I’m tryn…

Calculated and typed long after I sundowned.

 

[blueinkd]

What’s up guys. I got a 04 tahoe 5.3 LT flex fuel 2wd. I upgraded timing chain oil pump did the truck Norris camshaft .560 springs that come with it an the seals. Also they said 7.400 pushrods will be fine. I have stock heads and lifters still. They’ve never gave a problem or sounded bad. Engine is quiet. Installed everything an had it tuned. Sounds awesome. After the engine warms up I hear a tick. Found broken manifold bolt bought one them dorman exhaust clamps. Anyway engine is very quiet when I start it an after I warms up I can hear a slight tap while driving. When I get on the gas a little it goes away. After doing a bunch of research I see lifter pre load an all this. I should probably buy a pushrod checker an make sure the length is right. But it’s kinda confusing. I get to check for zero lash an count the turns an all that. I’m not 100 sure how much pre load stock lifters need. The web is full of pre load for ls7 lifters. I pulled my valve covers off an u can spin the pushrod with your finger tips. Not easily but u can. I pulled one pushrod out an installed 7.425. Can’t spin it. Wondering if that would be to long. The guys at Brian tooley said the 7.400 should be fine. An I’ve heard these ls motors have a tap that’s normal after cam install.

I ran into your thread while doing some research. I just ordered the BTR truck norris csm kit for my 05 tahoe. What did u use for valve spring retainers?? Anything else u can share thsy may help during my install?? I'm planning in using new stock lifters and rocker arms. Doing the swap cause I may have a bad lifter on cylinder 2 and just going with a cam at the same time.

 

[Byoung1330]

I ran into your thread while doing some research. I just ordered the BTR truck norris csm kit for my 05 tahoe. What did u use for valve spring retainers?? Anything else u can share thsy may help during my install?? I'm planning in using new stock lifters and rocker arms. Doing the swap cause I may have a bad lifter on cylinder 2 and just going with a cam at the same time.

I used my stock retainers. I didn’t change my lifters they never have made a noise. Still to this day quiet as can be an this has been a while since I installed cam. An I recommend the Che trunnion kit with your stock rocker arms

 

[Paul_Kaos]

am I reading here that a stock LS truck engine might need a menagerie of different length pushrods to eliminate slop between the lifters and rockers? wtf?

i thought people shimmed the rocker pedestals or something?

all of this Honda lawnmower stuff is kinda new to me Im used to OHC things lol